In Memory Undo
Hi All.
Does IMU generate redo for ALL data changed?
I guess that in case of the IMU transaction undo segment header is modified at the begining ( for ITL entries) and so that would need redo.
But since the actual IMU is in the shared pool, no redo is generated , and when an IMU flush happens the proper undo block is updated with the "collapsed" data.
I went through two quality materials on this subject
http://www.oracle.com/education/america_eblasts/fy09/q1/craig_shallahamer_all_about_oracle_s_in_memory_undo.pdf
and
http://www.teamycc.com/RMOUG_2008_Conference/PDF/Haisley.pdf
Both seem to suggest that redo is generated, but the wordings in the second paper suggests that ALL redo for the undo "blocks" are recorded in the redo stream, whereas the first paper suggests that redo is generated only for the "collapsed" values.
I am doubting whether my confusion arises out of the "throwaway" undo and "normal" IMU operations.
Any assistance would be welcome and thanks in advance!!
Edited by: indhar on Dec 13, 2009 6:39 PM
Edited by: indhar on Dec 13, 2009 6:40 PM
Hi,
Both seem to suggest that redo is generated, but the wordings in the second paper suggests that ALL redo for the undo "blocks" are recorded in the redo stream, whereas the first paper suggests that redo is generated only for the "collapsed" values.
I am doubting whether my confusion arises out of the "throwaway" undo and "normal" IMU operations.
Any assistance would be welcome and thanks in advance!!AFAIK, Undo will not be recorded in Redo until the transactions are committed. See Advantage of IMU, its removing of burden of Maintaining the Chain of Undo buffer Management Separately in memory, instead of that existing IMU is maintaing with help of pointer and updating the ITL with the memory. So it will be advantage when compared to regular flow
- Pavan Kumar N
Oracle 9i/10g - OCP
http://oracleinternals.blogspot.com/
Similar Messages
-
Update Statement Simply hanged but doing db file sequential read
Hi,
Last night we had issue with one of the prod server where we updating one of table which contains large number records in millions.Same identical machine completed in1 hour and other box never completed but doing db file sequential read but in the long ops the last statement it was done 20:16 after that nothing is happening but i ran few trace on that user.
/u01/app/oracle/admin/SURV2/udump/surv2_ora_10048.trc
Oracle Database 10g Release 10.2.0.4.0 - Production
ORACLE_HOME = /u01/app/oracle/product/10.2.0/db
System name: SunOS
Node name: prdfa001
Release: 5.10
Version: Generic_139556-08
Machine: i86pc
Instance name: SURV2
Redo thread mounted by this instance: 1
Oracle process number: 18
Unix process pid: 10048, image: oracle@prdfa001
*** 2010-09-09 23:37:07.484
*** ACTION NAME:() 2010-09-09 23:37:07.473
*** MODULE NAME:(SQL*Plus) 2010-09-09 23:37:07.473
*** SERVICE NAME:(SURV2) 2010-09-09 23:37:07.473
*** SESSION ID:(289.54) 2010-09-09 23:37:07.473
Received ORADEBUG command 'unlimit' from process Unix process pid: 3983, image:
*** 2010-09-09 23:37:20.315
Received ORADEBUG command 'event 10046 trace name context forever, level 12' from process Unix process pid: 3983, image:
WAIT #7: nam='db file sequential read' ela= 11160 file#=13 block#=2252349 blocks=1 obj#=166421 tim=12499462835161
WAIT #7: nam='db file sequential read' ela= 2857 file#=13 block#=2249751 blocks=1 obj#=166421 tim=12499462838137
WAIT #7: nam='db file sequential read' ela= 3810 file#=13 block#=2251361 blocks=1 obj#=166421 tim=12499462842048
WAIT #7: nam='db file sequential read' ela= 4459 file#=13 block#=2247059 blocks=1 obj#=166421 tim=12499462846564
WAIT #7: nam='db file sequential read' ela= 2841 file#=13 block#=2247507 blocks=1 obj#=166421 tim=12499462849468
WAIT #7: nam='db file sequential read' ela= 427 file#=13 block#=2247568 blocks=1 obj#=166421 tim=12499462850032
WAIT #7: nam='db file sequential read' ela= 1187 file#=13 block#=2248264 blocks=1 obj#=166421 tim=12499462851327
WAIT #7: nam='db file sequential read' ela= 2687 file#=13 block#=2250707 blocks=1 obj#=166421 tim=12499462854178
WAIT #7: nam='db file sequential read' ela= 3657 file#=13 block#=2249697 blocks=1 obj#=166421 tim=12499462857896
WAIT #7: nam='db file sequential read' ela= 4139 file#=13 block#=2247074 blocks=1 obj#=166421 tim=12499462862093
WAIT #7: nam='db file sequential read' ela= 4180 file#=47 block#=3649690 blocks=1 obj#=166421 tim=12499509270445
WAIT #7: nam='db file sequential read' ela= 4802 file#=47 block#=3649309 blocks=1 obj#=166421 tim=12499509275327
WAIT #7: nam='db file sequential read' ela= 2459 file#=47 block#=3652697 blocks=1 obj#=166421 tim=12499509277859
WAIT #7: nam='db file sequential read' ela= 4015 file#=47 block#=3652826 blocks=1 obj#=166421 tim=12499509281948
WAIT #7: nam='db file sequential read' ela= 2248 file#=47 block#=3651610 blocks=1 obj#=166421 tim=12499509284269
WAIT #7: nam='db file sequential read' ela= 4824 file#=47 block#=3654297 blocks=1 obj#=166421 tim=12499509289166
WAIT #7: nam='db file sequential read' ela= 2008 file#=47 block#=3652312 blocks=1 obj#=166421 tim=12499509291248
WAIT #7: nam='db file sequential read' ela= 1925 file#=47 block#=3654490 blocks=1 obj#=166421 tim=12499509293246
WAIT #7: nam='db file sequential read' ela= 2859 file#=47 block#=3648458 blocks=1 obj#=166421 tim=12499509296178
WAIT #7: nam='db file sequential read' ela= 1740 file#=47 block#=3648212 blocks=1 obj#=166421 tim=12499509297991
WAIT #7: nam='db file sequential read' ela= 2566 file#=47 block#=3648411 blocks=1 obj#=166421 tim=12499509300631
WAIT #7: nam='db file sequential read' ela= 50772 file#=5 block#=480749 blocks=1 obj#=166421 tim=12499509351477
WAIT #7: nam='db file sequential read' ela= 12928 file#=5 block#=477177 blocks=1 obj#=166421 tim=12499509364482
WAIT #7: nam='db file sequential read' ela= 11116 file#=5 block#=479412 blocks=1 obj#=166421 tim=12499509375672
WAIT #7: nam='db file sequential read' ela= 4803 file#=5 block#=483440 blocks=1 obj#=166421 tim=12499509380549
WAIT #7: nam='db file sequential read' ela= 6900 file#=5 block#=481454 blocks=1 obj#=166421 tim=12499509387522
Received ORADEBUG command 'event 10046 trace name context off' from process Unix process pid: 3983, image:
/u01/app/oracle/admin/SURV2/udump/surv2_ora_1545.trc
Oracle Database 10g Release 10.2.0.4.0 - Production
ORACLE_HOME = /u01/app/oracle/product/10.2.0/db
System name: SunOS
Node name: prdfa001
Release: 5.10
Version: Generic_139556-08
Machine: i86pc
Instance name: SURV2
Redo thread mounted by this instance: 1
Oracle process number: 22
Unix process pid: 1545, image: oracle@prdfa001 (TNS V1-V3)
*** ACTION NAME:() 2010-09-09 23:20:13.485
*** MODULE NAME:(sqlplus@prdfa001 (TNS V1-V3)) 2010-09-09 23:20:13.485
*** SERVICE NAME:(SYS$USERS) 2010-09-09 23:20:13.485
*** SESSION ID:(290.697) 2010-09-09 23:20:13.485
===================================================
SYSTEM STATE
System global information:
processes: base 47819b480, size 300, cleanup 4781a5638
allocation: free sessions 47f1d6148, free calls 0
control alloc errors: 0 (process), 0 (session), 0 (call)
PMON latch cleanup depth: 0
seconds since PMON's last scan for dead processes: 20
system statistics:
1171 logons cumulative
19 logons current
89219 opened cursors cumulative
86 opened cursors current
15095069 user commits
5 user rollbacks
58632904 user calls
44023255 recursive calls
224311 recursive cpu usage
201424173 session logical reads
0 session stored procedure space
901812 CPU used when call started
995437 CPU used by this session
6814196 DB time
0 cluster wait time
22542300822 concurrency wait time
3095 application wait time
16479074661 user I/O wait time
1284052668 session connect time
1284067190 process last non-idle time
189018343568 session uga memory
1249667216 session uga memory max
26059216 messages sent
26059220 messages received
239739 background timeouts
162399896 session pga memory
189662872 session pga memory max
4 enqueue timeouts
901146 enqueue waits
0 enqueue deadlocks
32122711 enqueue requests
17819 enqueue conversions
32122676 enqueue releases
0 global enqueue gets sync
0 global enqueue gets async
0 global enqueue get time
0 global enqueue releases
2865667 physical read total IO requests
262620 physical read total multi block requests
270093476864 physical read total bytes
select SYS_CONTEXT('USERENV', 'SERVER_HOST'), SYS_CONTEXT('USERENV', 'DB_UNIQUE_NAME'), SYS_CONTEXT('USERENV', 'INSTANCE_NAME'), SYS_CONTEXT('USERENV', 'SERVICE_NAME'), INSTANCE_NUMBER, STARTUP_TIME, SYS_CONTEXT('USERENV', 'DB_DOMAIN') from v$instance where INSTANCE_NAME=SYS_CONTEXT('USERENV', 'INSTANCE_NAME')
hash=550c95f3d0cfa8290e60ea8382d3a2ca timestamp=09-09-2010 04:24:19
namespace=CRSR flags=RON/KGHP/TIM/PN0/LRG/KST/DBN/MTX/[100100d1]
kkkk-dddd-llll=0000-0001-0001 lock=N pin=0 latch#=9 hpc=0582 hlc=0582
lwt=47df576e8[47df576e8,47df576e8] ltm=47df576f8[47df576f8,47df576f8]
pwt=47df576b0[47df576b0,47df576b0] ptm=47df576c0[47df576c0,47df576c0]
ref=47df57718[47df57718,47df57718] lnd=47df57730[47df57730,47df57730]
LIBRARY OBJECT: object=471ee1d38
type=CRSR flags=EXS[0001] pflags=[0000] status=VALD load=0
CHILDREN: size=16
child# table reference handle
0 471ee1800 471ee1470 47df7dce0
DATA BLOCKS:
data# heap pointer status pins change whr
0 47df7de48 471ee1e50 I/P/A/-/- 0 NONE 00
SO: 473691d60, type: 53, owner: 47924e810, flag: INIT/-/-/0x00
LIBRARY OBJECT LOCK: lock=473691d60 handle=47bb22fa0 mode=N
call pin=0 session pin=0 hpc=0000 hlc=0000
htl=473691de0[4735dbcb8,476cfbf58] htb=476cfbf58 ssga=476cfb6a0
user=47924e810 session=47f2310f0 count=1 flags=[0000] savepoint=0x0
LIBRARY OBJECT HANDLE: handle=47bb22fa0 mtx=47bb230d0(0) cdp=0
namespace=CRSR flags=RON/KGHP/PN0/EXP/[10010100]
kkkk-dddd-llll=0000-0001-0001 lock=N pin=0 latch#=3 hpc=fd84 hlc=fd84
lwt=47bb23048[47bb23048,47bb23048] ltm=47bb23058[47bb23058,47bb23058]
pwt=47bb23010[47bb23010,47bb23010] ptm=47bb23020[47bb23020,47bb23020]
ref=47bb23078[472f8de18,472f8de18] lnd=47bb23090[47bb23090,47bb23090]
LIBRARY OBJECT: object=472f8d9d8
type=CRSR flags=EXS[0001] pflags=[0000] status=VALD load=0
DEPENDENCIES: count=1 size=16
AUTHORIZATIONS: count=1 size=16 minimum entrysize=16
ACCESSES: count=1 size=16
TRANSLATIONS: count=1 size=16
DATA BLOCKS:
data# heap pointer status pins change whr
0 47bb22ee0 472f8daf0 I/P/A/-/- 0 NONE 00
6 472f8e508 46be86250 I/-/A/-/E 0 NONE 00
SO: 4735dbc38, type: 53, owner: 47924e810, flag: INIT/-/-/0x00
LIBRARY OBJECT LOCK: lock=4735dbc38 handle=47bb231c8 mode=N
call pin=0 session pin=0 hpc=0000 hlc=0000
htl=4735dbcb8[476cfbf58,473691de0] htb=476cfbf58 ssga=476cfb6a0
user=47924e810 session=47f2310f0 count=1 flags=[0000] savepoint=0x4c894f8b
LIBRARY OBJECT HANDLE: handle=47bb231c8 mtx=47bb232f8(1) cdp=1
name=select value$ from props$ where name = 'GLOBAL_DB_NAME'
hash=4bb432d65c5a391a42a5c3fa74472c7a timestamp=09-09-2010 04:24:12
namespace=CRSR flags=RON/KGHP/TIM/PN0/SML/KST/DBN/MTX/[120100d0]
kkkk-dddd-llll=0000-0001-0001 lock=N pin=0 latch#=3 hpc=0584 hlc=0584
lwt=47bb23270[47bb23270,47bb23270] ltm=47bb23280[47bb23280,47bb23280]
pwt=47bb23238[47bb23238,47bb23238] ptm=47bb23248[47bb23248,47bb23248]
ref=47bb232a0[47bb232a0,47bb232a0] lnd=47bb232b8[47bb232b8,47bb232b8]
LIBRARY OBJECT: object=472f8e6e0
type=CRSR flags=EXS[0001] pflags=[0000] status=VALD load=0
CHILDREN: size=16
child# table reference handle
0 472f8e1a8 472f8de18 47bb22fa0
DATA BLOCKS:
data# heap pointer status pins change whr
0 47bb23108 472f8e7f8 I/P/A/-/- 0 NONE 00
SO: 473644348, type: 53, owner: 47924e810, flag: INIT/-/-/0x00
LIBRARY OBJECT LOCK: lock=473644348 handle=47bbde418 mode=N
call pin=0 session pin=0 hpc=0000 hlc=0000
htl=4736443c8[476cfc0b8,476cfc0b8] htb=476cfc0b8 ssga=476cfb6a0
user=47924e810 session=47924e810 count=1 flags=[0000] savepoint=0x4c894f8b
LIBRARY OBJECT HANDLE: handle=47bbde418 mtx=47bbde548(0) cdp=0
name=ALTER SESSION SET TIME_ZONE='+02:00'
hash=3878dff8839e71e3dd05a2e75fbd6390 timestamp=09-09-2010 04:24:04
namespace=CRSR flags=RON/KGHP/TIM/PN0/SML/DBN/[12010040]
kkkk-dddd-llll=0000-0001-0001 lock=N pin=0 latch#=11 hpc=04e8 hlc=04e8
lwt=47bbde4c0[47bbde4c0,47bbde4c0] ltm=47bbde4d0[47bbde4d0,47bbde4d0]
pwt=47bbde488[47bbde488,47bbde488] ptm=47bbde498[47bbde498,47bbde498]
ref=47bbde4f0[47bbde4f0,47bbde4f0] lnd=47bbde508[47bbde508,47bbde508]
LIBRARY OBJECT: object=472fffc08
type=CRSR flags=EXS[0001] pflags=[0000] status=VALD load=0
DATA BLOCKS:
data# heap pointer status pins change whr
0 47bbde320 472fffd20 I/P/A/-/- 0 NONE 00
SO: 47aecf9e8, type: 41, owner: 47924e810, flag: INIT/-/-/0x00
(dummy) nxc=0, nlb=0
SO: 47f290540, type: 11, owner: 4781a7dc0, flag: INIT/-/-/0x00
(broadcast handle) flag: (2) ACTIVE SUBSCRIBER, owner: 4781a7dc0,
event: 1132, last message event: 1132,
last message waited event: 1132, next message: 0(0), messages read: 0
channel: (47a2df4f8) system events broadcast channel
scope: 2, event: 1132, last mesage event: 18,
publishers/subscribers: 0/17,
messages published: 1
SO: 47826b228, type: 3, owner: 4781a7dc0, flag: INIT/-/-/0x00
(call) sess: cur 47924e810, rec 0, usr 47924e810; depth: 0
SO: 476c52968, type: 16, owner: 4781a7dc0, flag: INIT/-/-/0x00
(osp req holder)
PSEUDO PROCESS for group DEFAULT:
SO: 47a1eb7d0, type: 2, owner: 0, flag: INIT/-/-/0x00
(process) Oracle pid=0, calls cur/top: 0/0, flag: (20) PSEUDO
int error: 0, call error: 0, sess error: 0, txn error 0
(post info) last post received: 0 0 0
last post received-location: No post
last process to post me: none
last post sent: 0 0 0
last post sent-location: No post
last process posted by me: none
(latch info) wait_event=0 bits=0
Process Group: DEFAULT, pseudo proc: 47a1eb7d0
O/S info: user: , term: , ospid: (DEAD)
OSD pid info: Unix process pid: 0, image: PSEUDO
Dump of memory from 0x00000004791BF538 to 0x00000004791BF740
4791BF530 00000000 00000000 [........]
4791BF540 00000000 00000000 00000000 00000000 [................]
Repeat 31 times
NO DETACHED BRANCHES.
NO DETACHED NETWORK CONNECTIONS.
CLEANUP STATE OBJECTS:
SO: 47f0cd038, type: 1, owner: 0, flag: INIT/-/-/0x00
(cleanup state object) description: instance enqueue anchor state
latch: 0x380009890
SO: 4782cf080, type: 5, owner: 47f0cd038, flag: INIT/-/-/0x00
(enqueue) TA-00000006-00000001 DID: 0001-000F-0000000B
lv: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 res_flag: 0x2
res: 0x47a28d020, mode: X, lock_flag: 0x0
own: 0x0, sess: 0x0, prv: 0x47a28d030
SO: 47f0cd098, type: 1, owner: 0, flag: INIT/-/-/0x00
(cleanup state object) description: switchable channel handle anch
latch: 0x38000ac98
SO: 47f28f868, type: 11, owner: 47f0cd098, flag: INIT/-/-/0x00
(broadcast handle) flag: (c2) ACTIVE SUBSCRIBER, owner: 0,
event: 1, last message event: 1,
last message waited event: 1, next message: 0(0), messages read: 0
channel: (47a2e4190) KPON channel
scope: 2, event: 1, last mesage event: 0,
publishers/subscribers: 0/1,
messages published: 0
SO: 47f0cd0f8, type: 1, owner: 0, flag: INIT/-/-/0x00
(cleanup state object) description: TT shared object cleanup SO
latch: 0x38001c6b8
SO: 47f0cd158, type: 1, owner: 0, flag: INIT/-/-/0x00
(cleanup state object) description: SS shared object cleanup SO
latch: 0x38001cd48
END OF SYSTEM STATE
Top 5 Timed Events Avg %Total
~~~~~~~~~~~~~~~~~~ wait Call
Event Waits Time (s) (ms) Time Wait Class
db file sequential read 2,347,652 9,215 4 64.5 User I/O
db file scattered read 245,687 4,199 17 29.4 User I/O
CPU time 974 6.8
db file parallel write 50,082 408 8 2.9 System I/O
log file parallel write 6,963 52 7 0.4 System I/O
Time Model Statistics DB/Inst: SURV2/SURV2 Snaps: 19172-19178
-> Total time in database user-calls (DB Time): 14286.4s
-> Statistics including the word "background" measure background process
time, and so do not contribute to the DB time statistic
-> Ordered by % or DB time desc, Statistic name
Statistic Name Time (s) % of DB Time
sql execute elapsed time 14,280.3 100.0
DB CPU 974.5 6.8
PL/SQL execution elapsed time 531.8 3.7
parse time elapsed 30.5 .2
hard parse elapsed time 27.1 .2
connection management call elapsed time 14.9 .1
hard parse (sharing criteria) elapsed time 3.4 .0
hard parse (bind mismatch) elapsed time 3.1 .0
PL/SQL compilation elapsed time 2.4 .0
failed parse elapsed time 0.0 .0
repeated bind elapsed time 0.0 .0
sequence load elapsed time 0.0 .0
DB time 14,286.4 N/A
background elapsed time 670.2 N/A
background cpu time 186.1 N/A
Wait Class DB/Inst: SURV2/SURV2 Snaps: 19172-19178
-> s - second
-> cs - centisecond - 100th of a second
-> ms - millisecond - 1000th of a second
-> us - microsecond - 1000000th of a second
-> ordered by wait time desc, waits desc
Avg
%Time Total Wait wait Waits
Wait Class Waits -outs Time (s) (ms) /txn
User I/O 2,593,484 .0 13,415 5 150.0
System I/O 87,506 .0 515 6 5.1
Other 839 11.4 6 7 0.0
Commit 3,225 .1 6 2 0.2
Concurrency 1,033 .0 5 5 0.1
Configuration 2,514 99.4 0 0 0.1
Network 47,559 .0 0 0 2.8
Application 7 .0 0 0 0.0
Wait Events DB/Inst: SURV2/SURV2 Snaps: 19172-19178
-> s - second
-> cs - centisecond - 100th of a second
-> ms - millisecond - 1000th of a second
-> us - microsecond - 1000000th of a second
-> ordered by wait time desc, waits desc (idle events last)
Avg
%Time Total Wait wait Waits
Event Waits -outs Time (s) (ms) /txn
db file sequential read 2,347,652 .0 9,215 4 135.8
db file scattered read 245,687 .0 4,199 17 14.2
db file parallel write 50,082 .0 408 8 2.9
log file parallel write 6,963 .0 52 7 0.4
control file parallel write 6,203 .0 44 7 0.4
control file sequential read 24,242 .0 11 0 1.4
log file sync 3,225 .1 6 2 0.2
latch free 84 .0 4 47 0.0
os thread startup 25 .0 3 120 0.0
latch: session allocation 39 .0 1 33 0.0
db file parallel read 12 .0 1 92 0.0
enq: TX - index contention 186 .0 1 3 0.0
latch: shared pool 47 .0 1 11 0.0
LGWR wait for redo copy 319 3.1 0 1 0.0
library cache load lock 2 .0 0 172 0.0
buffer busy waits 590 .0 0 0 0.0
log file switch completion 6 .0 0 29 0.0
SGA: allocation forcing comp 11 54.5 0 14 0.0
latch: library cache lock 50 .0 0 3 0.0
read by other session 38 .0 0 4 0.0
direct path read 42 .0 0 3 0.0
SQL*Net message to client 44,807 .0 0 0 2.6
rdbms ipc reply 207 .0 0 0 0.0
SQL*Net more data from clien 1,014 .0 0 0 0.1
latch: cache buffers chains 24 .0 0 1 0.0
latch: library cache 29 .0 0 1 0.0
log file sequential read 8 .0 0 3 0.0
direct path write 50 .0 0 0 0.0
SQL*Net more data to client 398 .0 0 0 0.0
latch: object queue header o 12 .0 0 1 0.0
latch: In memory undo latch 78 .0 0 0 0.0
undo segment extension 2,507 99.7 0 0 0.1
latch: cache buffers lru cha 4 .0 0 1 0.0
log file single write 8 .0 0 0 0.0
local write wait 3 .0 0 1 0.0
enq: RO - fast object reuse 3 .0 0 1 0.0
buffer deadlock 87 92.0 0 0 0.0
enq: JS - queue lock 1 .0 0 1 0.0
cursor: pin S 70 .0 0 0 0.0
latch: row cache objects 2 .0 0 1 0.0
SQL*Net message to dblink 1,338 .0 0 0 0.1
latch: checkpoint queue latc 2 .0 0 0 0.0
reliable message 3 .0 0 0 0.0
log buffer space 1 .0 0 1 0.0
SQL*Net break/reset to clien 4 .0 0 0 0.0
SQL*Net more data from dblin 2 .0 0 0 0.0
SQL*Net message from client 44,949 .0 155,701 3464 2.6
virtual circuit status 621 100.0 18,156 29237 0.0
Streams AQ: qmn slave idle w 664 .0 18,127 27299 0.0
Streams AQ: qmn coordinator 1,339 50.4 18,099 13517 0.1
Streams AQ: waiting for time 12 100.0 8,741 728394 0.0
jobq slave wait 130 100.0 380 2927 0.0
PL/SQL lock timer 1 100.0 1 978 0.0
SQL*Net message from dblink 1,338 .0 0 0 0.1
single-task message 1 .0 0 38 0.0
class slave wait 11 .0 0 1 0.0
SQL ordered by Elapsed Time DB/Inst: SURV2/SURV2 Snaps: 19172-19178
-> Resources reported for PL/SQL code includes the resources used by all SQL
statements called by the code.
-> % Total DB Time is the Elapsed Time of the SQL statement divided
into the Total Database Time multiplied by 100
Elapsed CPU Elap per % Total
Time (s) Time (s) Executions Exec (s) DB Time SQL Id
13,664 906 0 N/A 95.6 gr2cx6athc5j5
Module: SQL*Plus
BEGIN DBMS_OUTPUT.PUT_LINE(equiduct.eod(NULL,NULL)); END;
8,792 195 0 N/A 61.5 986fzxtzr52u5
Module: SQL*Plus
UPDATE TIBEX_ORDER SET INSTRUMENTID=:"SYS_B_0" WHERE INSTRUMENTID=:"SYS_B_1"
2,524 368 1 2524.1 17.7 c4uf0x6hdgnwq
Module: SQL*Plus
UPDATE TIBEX_FIXSESSIONSTATE SET INSTRUMENTID=:"SYS_B_0" WHERE INSTRUMENTID=:"
SYS_B_1"
1,414 177 1 1414.4 9.9 cbg09ma34kq8w
Module: SQL*Plus
SELECT count(*) FROM TIBEX_ORDER WHERE INSTRUMENTID=:"SYS_B_0"
742 137 1 742.2 5.2 g0sg6v994wssq
Module: SQL*Plus
SELECT count(*) FROM TIBEX_FIXSESSIONSTATE WHERE INSTRUMENTID=:"SYS_B_0"
274 11 1 274.2 1.9 6mcpb06rctk0x
Module: DBMS_SCHEDULER
call dbms_space.auto_space_advisor_job_proc ( )
264 8 27 9.8 1.8 8szmwam7fysa3
Module: DBMS_SCHEDULER
insert into wri$_adv_objspace_trend_data select timepoint, space_usage, space_a
lloc, quality from table(dbms_space.object_growth_trend(:1, :2, :3, :4, NULL, N
ULL, NULL, 'FALSE', :5, 'FALSE'))
99 1 1 99.4 0.7 1z0x41f66nvjr
Module: SQL*Plus
UPDATE TIBEX_INSTRUMENTADMIN SET INSTRUMENTID=:"SYS_B_0" WHERE INSTRUMENTID=:"
SYS_B_1"
21 10 1 21.5 0.2 bbc1ck8594kvj
Module: SQL*Plus
UPDATE TIBEX_INSTRUMENTDAILYHIST SET ADJOPEN=NVL(ADJOPEN,OPEN), ADJHIGH=NVL(ADJH
IGH,HIGH), ADJLOW=NVL(ADJLOW,LOW), ADJMID=NVL(ADJMID,MID), ADJCLOSE=NVL(ADJCLOSE
,CLOSE), ADJVOLUME=NVL(ADJVOLUME,VOLUME), ADJCLOSINGBID=NVL(ADJCLOSINGBID,CLOSIN
GBID), ADJCLOSINGOFFER=NVL(ADJCLOSINGOFFER,CLOSINGOFFER)
12 0 1 12.5 0.1 6xm9p9uy5kaap
Module: SQL*Plus
SELECT count(*) FROM TIBEX_INSTRUMENTSTATE WHERE INSTRUMENTID=:"SYS_B_0"
SQL ordered by CPU Time DB/Inst: SURV2/SURV2 Snaps: 19172-19178
-> Resources reported for PL/SQL code includes the resources used by all SQL
statements called by the code.
-> % Total DB Time is the Elapsed Time of the SQL statement divided
into the Total Database Time multiplied by 100
CPU Elapsed CPU per % Total
Time (s) Time (s) Executions Exec (s) DB Time SQL Id
906 13,664 0 N/A 95.6 gr2cx6athc5j5
Module: SQL*Plus
BEGIN DBMS_OUTPUT.PUT_LINE(equiduct.eod(NULL,NULL)); END;
368 2,524 1 367.51 17.7 c4uf0x6hdgnwq
Module: SQL*Plus
UPDATE TIBEX_FIXSESSIONSTATE SET INSTRUMENTID=:"SYS_B_0" WHERE INSTRUMENTID=:"
SYS_B_1"
195 8,792 0 N/A 61.5 986fzxtzr52u5
Module: SQL*Plus
UPDATE TIBEX_ORDER SET INSTRUMENTID=:"SYS_B_0" WHERE INSTRUMENTID=:"SYS_B_1"
177 1,414 1 176.93 9.9 cbg09ma34kq8w
Module: SQL*Plus
SELECT count(*) FROM TIBEX_ORDER WHERE INSTRUMENTID=:"SYS_B_0"
137 742 1 137.38 5.2 g0sg6v994wssq
Module: SQL*Plus
SELECT count(*) FROM TIBEX_FIXSESSIONSTATE WHERE INSTRUMENTID=:"SYS_B_0"
11 274 1 10.82 1.9 6mcpb06rctk0x
Module: DBMS_SCHEDULER
call dbms_space.auto_space_advisor_job_proc ( )
10 21 1 9.65 0.2 bbc1ck8594kvjEdited by: NM on 10-Sep-2010 07:39Hi,
Last night we had issue with one of the prod server where we updating one of table which contains large number records in millions.Same identical machine completed in1 hour and other box never completed but doing db file sequential read but in the long ops the last statement it was done 20:16 after that nothing is happening but i ran few trace on that user.
/u01/app/oracle/admin/SURV2/udump/surv2_ora_10048.trc
Oracle Database 10g Release 10.2.0.4.0 - Production
ORACLE_HOME = /u01/app/oracle/product/10.2.0/db
System name: SunOS
Node name: prdfa001
Release: 5.10
Version: Generic_139556-08
Machine: i86pc
Instance name: SURV2
Redo thread mounted by this instance: 1
Oracle process number: 18
Unix process pid: 10048, image: oracle@prdfa001
*** 2010-09-09 23:37:07.484
*** ACTION NAME:() 2010-09-09 23:37:07.473
*** MODULE NAME:(SQL*Plus) 2010-09-09 23:37:07.473
*** SERVICE NAME:(SURV2) 2010-09-09 23:37:07.473
*** SESSION ID:(289.54) 2010-09-09 23:37:07.473
Received ORADEBUG command 'unlimit' from process Unix process pid: 3983, image:
*** 2010-09-09 23:37:20.315
Received ORADEBUG command 'event 10046 trace name context forever, level 12' from process Unix process pid: 3983, image:
WAIT #7: nam='db file sequential read' ela= 11160 file#=13 block#=2252349 blocks=1 obj#=166421 tim=12499462835161
WAIT #7: nam='db file sequential read' ela= 2857 file#=13 block#=2249751 blocks=1 obj#=166421 tim=12499462838137
WAIT #7: nam='db file sequential read' ela= 3810 file#=13 block#=2251361 blocks=1 obj#=166421 tim=12499462842048
WAIT #7: nam='db file sequential read' ela= 4459 file#=13 block#=2247059 blocks=1 obj#=166421 tim=12499462846564
WAIT #7: nam='db file sequential read' ela= 2841 file#=13 block#=2247507 blocks=1 obj#=166421 tim=12499462849468
WAIT #7: nam='db file sequential read' ela= 427 file#=13 block#=2247568 blocks=1 obj#=166421 tim=12499462850032
WAIT #7: nam='db file sequential read' ela= 1187 file#=13 block#=2248264 blocks=1 obj#=166421 tim=12499462851327
WAIT #7: nam='db file sequential read' ela= 2687 file#=13 block#=2250707 blocks=1 obj#=166421 tim=12499462854178
WAIT #7: nam='db file sequential read' ela= 3657 file#=13 block#=2249697 blocks=1 obj#=166421 tim=12499462857896
WAIT #7: nam='db file sequential read' ela= 4139 file#=13 block#=2247074 blocks=1 obj#=166421 tim=12499462862093
WAIT #7: nam='db file sequential read' ela= 4180 file#=47 block#=3649690 blocks=1 obj#=166421 tim=12499509270445
WAIT #7: nam='db file sequential read' ela= 4802 file#=47 block#=3649309 blocks=1 obj#=166421 tim=12499509275327
WAIT #7: nam='db file sequential read' ela= 2459 file#=47 block#=3652697 blocks=1 obj#=166421 tim=12499509277859
WAIT #7: nam='db file sequential read' ela= 4015 file#=47 block#=3652826 blocks=1 obj#=166421 tim=12499509281948
WAIT #7: nam='db file sequential read' ela= 2248 file#=47 block#=3651610 blocks=1 obj#=166421 tim=12499509284269
WAIT #7: nam='db file sequential read' ela= 4824 file#=47 block#=3654297 blocks=1 obj#=166421 tim=12499509289166
WAIT #7: nam='db file sequential read' ela= 2008 file#=47 block#=3652312 blocks=1 obj#=166421 tim=12499509291248
WAIT #7: nam='db file sequential read' ela= 1925 file#=47 block#=3654490 blocks=1 obj#=166421 tim=12499509293246
WAIT #7: nam='db file sequential read' ela= 2859 file#=47 block#=3648458 blocks=1 obj#=166421 tim=12499509296178
WAIT #7: nam='db file sequential read' ela= 1740 file#=47 block#=3648212 blocks=1 obj#=166421 tim=12499509297991
WAIT #7: nam='db file sequential read' ela= 2566 file#=47 block#=3648411 blocks=1 obj#=166421 tim=12499509300631
WAIT #7: nam='db file sequential read' ela= 50772 file#=5 block#=480749 blocks=1 obj#=166421 tim=12499509351477
WAIT #7: nam='db file sequential read' ela= 12928 file#=5 block#=477177 blocks=1 obj#=166421 tim=12499509364482
WAIT #7: nam='db file sequential read' ela= 11116 file#=5 block#=479412 blocks=1 obj#=166421 tim=12499509375672
WAIT #7: nam='db file sequential read' ela= 4803 file#=5 block#=483440 blocks=1 obj#=166421 tim=12499509380549
WAIT #7: nam='db file sequential read' ela= 6900 file#=5 block#=481454 blocks=1 obj#=166421 tim=12499509387522
Received ORADEBUG command 'event 10046 trace name context off' from process Unix process pid: 3983, image:
/u01/app/oracle/admin/SURV2/udump/surv2_ora_1545.trc
Oracle Database 10g Release 10.2.0.4.0 - Production
ORACLE_HOME = /u01/app/oracle/product/10.2.0/db
System name: SunOS
Node name: prdfa001
Release: 5.10
Version: Generic_139556-08
Machine: i86pc
Instance name: SURV2
Redo thread mounted by this instance: 1
Oracle process number: 22
Unix process pid: 1545, image: oracle@prdfa001 (TNS V1-V3)
*** ACTION NAME:() 2010-09-09 23:20:13.485
*** MODULE NAME:(sqlplus@prdfa001 (TNS V1-V3)) 2010-09-09 23:20:13.485
*** SERVICE NAME:(SYS$USERS) 2010-09-09 23:20:13.485
*** SESSION ID:(290.697) 2010-09-09 23:20:13.485
===================================================
SYSTEM STATE
System global information:
processes: base 47819b480, size 300, cleanup 4781a5638
allocation: free sessions 47f1d6148, free calls 0
control alloc errors: 0 (process), 0 (session), 0 (call)
PMON latch cleanup depth: 0
seconds since PMON's last scan for dead processes: 20
system statistics:
1171 logons cumulative
19 logons current
89219 opened cursors cumulative
86 opened cursors current
15095069 user commits
5 user rollbacks
58632904 user calls
44023255 recursive calls
224311 recursive cpu usage
201424173 session logical reads
0 session stored procedure space
901812 CPU used when call started
995437 CPU used by this session
6814196 DB time
0 cluster wait time
22542300822 concurrency wait time
3095 application wait time
16479074661 user I/O wait time
1284052668 session connect time
1284067190 process last non-idle time
189018343568 session uga memory
1249667216 session uga memory max
26059216 messages sent
26059220 messages received
239739 background timeouts
162399896 session pga memory
189662872 session pga memory max
4 enqueue timeouts
901146 enqueue waits
0 enqueue deadlocks
32122711 enqueue requests
17819 enqueue conversions
32122676 enqueue releases
0 global enqueue gets sync
0 global enqueue gets async
0 global enqueue get time
0 global enqueue releases
2865667 physical read total IO requests
262620 physical read total multi block requests
270093476864 physical read total bytes
select SYS_CONTEXT('USERENV', 'SERVER_HOST'), SYS_CONTEXT('USERENV', 'DB_UNIQUE_NAME'), SYS_CONTEXT('USERENV', 'INSTANCE_NAME'), SYS_CONTEXT('USERENV', 'SERVICE_NAME'), INSTANCE_NUMBER, STARTUP_TIME, SYS_CONTEXT('USERENV', 'DB_DOMAIN') from v$instance where INSTANCE_NAME=SYS_CONTEXT('USERENV', 'INSTANCE_NAME')
hash=550c95f3d0cfa8290e60ea8382d3a2ca timestamp=09-09-2010 04:24:19
namespace=CRSR flags=RON/KGHP/TIM/PN0/LRG/KST/DBN/MTX/[100100d1]
kkkk-dddd-llll=0000-0001-0001 lock=N pin=0 latch#=9 hpc=0582 hlc=0582
lwt=47df576e8[47df576e8,47df576e8] ltm=47df576f8[47df576f8,47df576f8]
pwt=47df576b0[47df576b0,47df576b0] ptm=47df576c0[47df576c0,47df576c0]
ref=47df57718[47df57718,47df57718] lnd=47df57730[47df57730,47df57730]
LIBRARY OBJECT: object=471ee1d38
type=CRSR flags=EXS[0001] pflags=[0000] status=VALD load=0
CHILDREN: size=16
child# table reference handle
0 471ee1800 471ee1470 47df7dce0
DATA BLOCKS:
data# heap pointer status pins change whr
0 47df7de48 471ee1e50 I/P/A/-/- 0 NONE 00
SO: 473691d60, type: 53, owner: 47924e810, flag: INIT/-/-/0x00
LIBRARY OBJECT LOCK: lock=473691d60 handle=47bb22fa0 mode=N
call pin=0 session pin=0 hpc=0000 hlc=0000
htl=473691de0[4735dbcb8,476cfbf58] htb=476cfbf58 ssga=476cfb6a0
user=47924e810 session=47f2310f0 count=1 flags=[0000] savepoint=0x0
LIBRARY OBJECT HANDLE: handle=47bb22fa0 mtx=47bb230d0(0) cdp=0
namespace=CRSR flags=RON/KGHP/PN0/EXP/[10010100]
kkkk-dddd-llll=0000-0001-0001 lock=N pin=0 latch#=3 hpc=fd84 hlc=fd84
lwt=47bb23048[47bb23048,47bb23048] ltm=47bb23058[47bb23058,47bb23058]
pwt=47bb23010[47bb23010,47bb23010] ptm=47bb23020[47bb23020,47bb23020]
ref=47bb23078[472f8de18,472f8de18] lnd=47bb23090[47bb23090,47bb23090]
LIBRARY OBJECT: object=472f8d9d8
type=CRSR flags=EXS[0001] pflags=[0000] status=VALD load=0
DEPENDENCIES: count=1 size=16
AUTHORIZATIONS: count=1 size=16 minimum entrysize=16
ACCESSES: count=1 size=16
TRANSLATIONS: count=1 size=16
DATA BLOCKS:
data# heap pointer status pins change whr
0 47bb22ee0 472f8daf0 I/P/A/-/- 0 NONE 00
6 472f8e508 46be86250 I/-/A/-/E 0 NONE 00
SO: 4735dbc38, type: 53, owner: 47924e810, flag: INIT/-/-/0x00
LIBRARY OBJECT LOCK: lock=4735dbc38 handle=47bb231c8 mode=N
call pin=0 session pin=0 hpc=0000 hlc=0000
htl=4735dbcb8[476cfbf58,473691de0] htb=476cfbf58 ssga=476cfb6a0
user=47924e810 session=47f2310f0 count=1 flags=[0000] savepoint=0x4c894f8b
LIBRARY OBJECT HANDLE: handle=47bb231c8 mtx=47bb232f8(1) cdp=1
name=select value$ from props$ where name = 'GLOBAL_DB_NAME'
hash=4bb432d65c5a391a42a5c3fa74472c7a timestamp=09-09-2010 04:24:12
namespace=CRSR flags=RON/KGHP/TIM/PN0/SML/KST/DBN/MTX/[120100d0]
kkkk-dddd-llll=0000-0001-0001 lock=N pin=0 latch#=3 hpc=0584 hlc=0584
lwt=47bb23270[47bb23270,47bb23270] ltm=47bb23280[47bb23280,47bb23280]
pwt=47bb23238[47bb23238,47bb23238] ptm=47bb23248[47bb23248,47bb23248]
ref=47bb232a0[47bb232a0,47bb232a0] lnd=47bb232b8[47bb232b8,47bb232b8]
LIBRARY OBJECT: object=472f8e6e0
type=CRSR flags=EXS[0001] pflags=[0000] status=VALD load=0
CHILDREN: size=16
child# table reference handle
0 472f8e1a8 472f8de18 47bb22fa0
DATA BLOCKS:
data# heap pointer status pins change whr
0 47bb23108 472f8e7f8 I/P/A/-/- 0 NONE 00
SO: 473644348, type: 53, owner: 47924e810, flag: INIT/-/-/0x00
LIBRARY OBJECT LOCK: lock=473644348 handle=47bbde418 mode=N
call pin=0 session pin=0 hpc=0000 hlc=0000
htl=4736443c8[476cfc0b8,476cfc0b8] htb=476cfc0b8 ssga=476cfb6a0
user=47924e810 session=47924e810 count=1 flags=[0000] savepoint=0x4c894f8b
LIBRARY OBJECT HANDLE: handle=47bbde418 mtx=47bbde548(0) cdp=0
name=ALTER SESSION SET TIME_ZONE='+02:00'
hash=3878dff8839e71e3dd05a2e75fbd6390 timestamp=09-09-2010 04:24:04
namespace=CRSR flags=RON/KGHP/TIM/PN0/SML/DBN/[12010040]
kkkk-dddd-llll=0000-0001-0001 lock=N pin=0 latch#=11 hpc=04e8 hlc=04e8
lwt=47bbde4c0[47bbde4c0,47bbde4c0] ltm=47bbde4d0[47bbde4d0,47bbde4d0]
pwt=47bbde488[47bbde488,47bbde488] ptm=47bbde498[47bbde498,47bbde498]
ref=47bbde4f0[47bbde4f0,47bbde4f0] lnd=47bbde508[47bbde508,47bbde508]
LIBRARY OBJECT: object=472fffc08
type=CRSR flags=EXS[0001] pflags=[0000] status=VALD load=0
DATA BLOCKS:
data# heap pointer status pins change whr
0 47bbde320 472fffd20 I/P/A/-/- 0 NONE 00
SO: 47aecf9e8, type: 41, owner: 47924e810, flag: INIT/-/-/0x00
(dummy) nxc=0, nlb=0
SO: 47f290540, type: 11, owner: 4781a7dc0, flag: INIT/-/-/0x00
(broadcast handle) flag: (2) ACTIVE SUBSCRIBER, owner: 4781a7dc0,
event: 1132, last message event: 1132,
last message waited event: 1132, next message: 0(0), messages read: 0
channel: (47a2df4f8) system events broadcast channel
scope: 2, event: 1132, last mesage event: 18,
publishers/subscribers: 0/17,
messages published: 1
SO: 47826b228, type: 3, owner: 4781a7dc0, flag: INIT/-/-/0x00
(call) sess: cur 47924e810, rec 0, usr 47924e810; depth: 0
SO: 476c52968, type: 16, owner: 4781a7dc0, flag: INIT/-/-/0x00
(osp req holder)
PSEUDO PROCESS for group DEFAULT:
SO: 47a1eb7d0, type: 2, owner: 0, flag: INIT/-/-/0x00
(process) Oracle pid=0, calls cur/top: 0/0, flag: (20) PSEUDO
int error: 0, call error: 0, sess error: 0, txn error 0
(post info) last post received: 0 0 0
last post received-location: No post
last process to post me: none
last post sent: 0 0 0
last post sent-location: No post
last process posted by me: none
(latch info) wait_event=0 bits=0
Process Group: DEFAULT, pseudo proc: 47a1eb7d0
O/S info: user: , term: , ospid: (DEAD)
OSD pid info: Unix process pid: 0, image: PSEUDO
Dump of memory from 0x00000004791BF538 to 0x00000004791BF740
4791BF530 00000000 00000000 [........]
4791BF540 00000000 00000000 00000000 00000000 [................]
Repeat 31 times
NO DETACHED BRANCHES.
NO DETACHED NETWORK CONNECTIONS.
CLEANUP STATE OBJECTS:
SO: 47f0cd038, type: 1, owner: 0, flag: INIT/-/-/0x00
(cleanup state object) description: instance enqueue anchor state
latch: 0x380009890
SO: 4782cf080, type: 5, owner: 47f0cd038, flag: INIT/-/-/0x00
(enqueue) TA-00000006-00000001 DID: 0001-000F-0000000B
lv: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 res_flag: 0x2
res: 0x47a28d020, mode: X, lock_flag: 0x0
own: 0x0, sess: 0x0, prv: 0x47a28d030
SO: 47f0cd098, type: 1, owner: 0, flag: INIT/-/-/0x00
(cleanup state object) description: switchable channel handle anch
latch: 0x38000ac98
SO: 47f28f868, type: 11, owner: 47f0cd098, flag: INIT/-/-/0x00
(broadcast handle) flag: (c2) ACTIVE SUBSCRIBER, owner: 0,
event: 1, last message event: 1,
last message waited event: 1, next message: 0(0), messages read: 0
channel: (47a2e4190) KPON channel
scope: 2, event: 1, last mesage event: 0,
publishers/subscribers: 0/1,
messages published: 0
SO: 47f0cd0f8, type: 1, owner: 0, flag: INIT/-/-/0x00
(cleanup state object) description: TT shared object cleanup SO
latch: 0x38001c6b8
SO: 47f0cd158, type: 1, owner: 0, flag: INIT/-/-/0x00
(cleanup state object) description: SS shared object cleanup SO
latch: 0x38001cd48
END OF SYSTEM STATE
Top 5 Timed Events Avg %Total
~~~~~~~~~~~~~~~~~~ wait Call
Event Waits Time (s) (ms) Time Wait Class
db file sequential read 2,347,652 9,215 4 64.5 User I/O
db file scattered read 245,687 4,199 17 29.4 User I/O
CPU time 974 6.8
db file parallel write 50,082 408 8 2.9 System I/O
log file parallel write 6,963 52 7 0.4 System I/O
Time Model Statistics DB/Inst: SURV2/SURV2 Snaps: 19172-19178
-> Total time in database user-calls (DB Time): 14286.4s
-> Statistics including the word "background" measure background process
time, and so do not contribute to the DB time statistic
-> Ordered by % or DB time desc, Statistic name
Statistic Name Time (s) % of DB Time
sql execute elapsed time 14,280.3 100.0
DB CPU 974.5 6.8
PL/SQL execution elapsed time 531.8 3.7
parse time elapsed 30.5 .2
hard parse elapsed time 27.1 .2
connection management call elapsed time 14.9 .1
hard parse (sharing criteria) elapsed time 3.4 .0
hard parse (bind mismatch) elapsed time 3.1 .0
PL/SQL compilation elapsed time 2.4 .0
failed parse elapsed time 0.0 .0
repeated bind elapsed time 0.0 .0
sequence load elapsed time 0.0 .0
DB time 14,286.4 N/A
background elapsed time 670.2 N/A
background cpu time 186.1 N/A
Wait Class DB/Inst: SURV2/SURV2 Snaps: 19172-19178
-> s - second
-> cs - centisecond - 100th of a second
-> ms - millisecond - 1000th of a second
-> us - microsecond - 1000000th of a second
-> ordered by wait time desc, waits desc
Avg
%Time Total Wait wait Waits
Wait Class Waits -outs Time (s) (ms) /txn
User I/O 2,593,484 .0 13,415 5 150.0
System I/O 87,506 .0 515 6 5.1
Other 839 11.4 6 7 0.0
Commit 3,225 .1 6 2 0.2
Concurrency 1,033 .0 5 5 0.1
Configuration 2,514 99.4 0 0 0.1
Network 47,559 .0 0 0 2.8
Application 7 .0 0 0 0.0
Wait Events DB/Inst: SURV2/SURV2 Snaps: 19172-19178
-> s - second
-> cs - centisecond - 100th of a second
-> ms - millisecond - 1000th of a second
-> us - microsecond - 1000000th of a second
-> ordered by wait time desc, waits desc (idle events last)
Avg
%Time Total Wait wait Waits
Event Waits -outs Time (s) (ms) /txn
db file sequential read 2,347,652 .0 9,215 4 135.8
db file scattered read 245,687 .0 4,199 17 14.2
db file parallel write 50,082 .0 408 8 2.9
log file parallel write 6,963 .0 52 7 0.4
control file parallel write 6,203 .0 44 7 0.4
control file sequential read 24,242 .0 11 0 1.4
log file sync 3,225 .1 6 2 0.2
latch free 84 .0 4 47 0.0
os thread startup 25 .0 3 120 0.0
latch: session allocation 39 .0 1 33 0.0
db file parallel read 12 .0 1 92 0.0
enq: TX - index contention 186 .0 1 3 0.0
latch: shared pool 47 .0 1 11 0.0
LGWR wait for redo copy 319 3.1 0 1 0.0
library cache load lock 2 .0 0 172 0.0
buffer busy waits 590 .0 0 0 0.0
log file switch completion 6 .0 0 29 0.0
SGA: allocation forcing comp 11 54.5 0 14 0.0
latch: library cache lock 50 .0 0 3 0.0
read by other session 38 .0 0 4 0.0
direct path read 42 .0 0 3 0.0
SQL*Net message to client 44,807 .0 0 0 2.6
rdbms ipc reply 207 .0 0 0 0.0
SQL*Net more data from clien 1,014 .0 0 0 0.1
latch: cache buffers chains 24 .0 0 1 0.0
latch: library cache 29 .0 0 1 0.0
log file sequential read 8 .0 0 3 0.0
direct path write 50 .0 0 0 0.0
SQL*Net more data to client 398 .0 0 0 0.0
latch: object queue header o 12 .0 0 1 0.0
latch: In memory undo latch 78 .0 0 0 0.0
undo segment extension 2,507 99.7 0 0 0.1
latch: cache buffers lru cha 4 .0 0 1 0.0
log file single write 8 .0 0 0 0.0
local write wait 3 .0 0 1 0.0
enq: RO - fast object reuse 3 .0 0 1 0.0
buffer deadlock 87 92.0 0 0 0.0
enq: JS - queue lock 1 .0 0 1 0.0
cursor: pin S 70 .0 0 0 0.0
latch: row cache objects 2 .0 0 1 0.0
SQL*Net message to dblink 1,338 .0 0 0 0.1
latch: checkpoint queue latc 2 .0 0 0 0.0
reliable message 3 .0 0 0 0.0
log buffer space 1 .0 0 1 0.0
SQL*Net break/reset to clien 4 .0 0 0 0.0
SQL*Net more data from dblin 2 .0 0 0 0.0
SQL*Net message from client 44,949 .0 155,701 3464 2.6
virtual circuit status 621 100.0 18,156 29237 0.0
Streams AQ: qmn slave idle w 664 .0 18,127 27299 0.0
Streams AQ: qmn coordinator 1,339 50.4 18,099 13517 0.1
Streams AQ: waiting for time 12 100.0 8,741 728394 0.0
jobq slave wait 130 100.0 380 2927 0.0
PL/SQL lock timer 1 100.0 1 978 0.0
SQL*Net message from dblink 1,338 .0 0 0 0.1
single-task message 1 .0 0 38 0.0
class slave wait 11 .0 0 1 0.0
SQL ordered by Elapsed Time DB/Inst: SURV2/SURV2 Snaps: 19172-19178
-> Resources reported for PL/SQL code includes the resources used by all SQL
statements called by the code.
-> % Total DB Time is the Elapsed Time of the SQL statement divided
into the Total Database Time multiplied by 100
Elapsed CPU Elap per % Total
Time (s) Time (s) Executions Exec (s) DB Time SQL Id
13,664 906 0 N/A 95.6 gr2cx6athc5j5
Module: SQL*Plus
BEGIN DBMS_OUTPUT.PUT_LINE(equiduct.eod(NULL,NULL)); END;
8,792 195 0 N/A 61.5 986fzxtzr52u5
Module: SQL*Plus
UPDATE TIBEX_ORDER SET INSTRUMENTID=:"SYS_B_0" WHERE INSTRUMENTID=:"SYS_B_1"
2,524 368 1 2524.1 17.7 c4uf0x6hdgnwq
Module: SQL*Plus
UPDATE TIBEX_FIXSESSIONSTATE SET INSTRUMENTID=:"SYS_B_0" WHERE INSTRUMENTID=:"
SYS_B_1"
1,414 177 1 1414.4 9.9 cbg09ma34kq8w
Module: SQL*Plus
SELECT count(*) FROM TIBEX_ORDER WHERE INSTRUMENTID=:"SYS_B_0"
742 137 1 742.2 5.2 g0sg6v994wssq
Module: SQL*Plus
SELECT count(*) FROM TIBEX_FIXSESSIONSTATE WHERE INSTRUMENTID=:"SYS_B_0"
274 11 1 274.2 1.9 6mcpb06rctk0x
Module: DBMS_SCHEDULER
call dbms_space.auto_space_advisor_job_proc ( )
264 8 27 9.8 1.8 8szmwam7fysa3
Module: DBMS_SCHEDULER
insert into wri$_adv_objspace_trend_data select timepoint, space_usage, space_a
lloc, quality from table(dbms_space.object_growth_trend(:1, :2, :3, :4, NULL, N
ULL, NULL, 'FALSE', :5, 'FALSE'))
99 1 1 99.4 0.7 1z0x41f66nvjr
Module: SQL*Plus
UPDATE TIBEX_INSTRUMENTADMIN SET INSTRUMENTID=:"SYS_B_0" WHERE INSTRUMENTID=:"
SYS_B_1"
21 10 1 21.5 0.2 bbc1ck8594kvj
Module: SQL*Plus
UPDATE TIBEX_INSTRUMENTDAILYHIST SET ADJOPEN=NVL(ADJOPEN,OPEN), ADJHIGH=NVL(ADJH
IGH,HIGH), ADJLOW=NVL(ADJLOW,LOW), ADJMID=NVL(ADJMID,MID), ADJCLOSE=NVL(ADJCLOSE
,CLOSE), ADJVOLUME=NVL(ADJVOLUME,VOLUME), ADJCLOSINGBID=NVL(ADJCLOSINGBID,CLOSIN
GBID), ADJCLOSINGOFFER=NVL(ADJCLOSINGOFFER,CLOSINGOFFER)
12 0 1 12.5 0.1 6xm9p9uy5kaap
Module: SQL*Plus
SELECT count(*) FROM TIBEX_INSTRUMENTSTATE WHERE INSTRUMENTID=:"SYS_B_0"
SQL ordered by CPU Time DB/Inst: SURV2/SURV2 Snaps: 19172-19178
-> Resources reported for PL/SQL code includes the resources used by all SQL
statements called by the code.
-> % Total DB Time is the Elapsed Time of the SQL statement divided
into the Total Database Time multiplied by 100
CPU Elapsed CPU per % Total
Time (s) Time (s) Executions Exec (s) DB Time SQL Id
906 13,664 0 N/A 95.6 gr2cx6athc5j5
Module: SQL*Plus
BEGIN DBMS_OUTPUT.PUT_LINE(equiduct.eod(NULL,NULL)); END;
368 2,524 1 367.51 17.7 c4uf0x6hdgnwq
Module: SQL*Plus
UPDATE TIBEX_FIXSESSIONSTATE SET INSTRUMENTID=:"SYS_B_0" WHERE INSTRUMENTID=:"
SYS_B_1"
195 8,792 0 N/A 61.5 986fzxtzr52u5
Module: SQL*Plus
UPDATE TIBEX_ORDER SET INSTRUMENTID=:"SYS_B_0" WHERE INSTRUMENTID=:"SYS_B_1"
177 1,414 1 176.93 9.9 cbg09ma34kq8w
Module: SQL*Plus
SELECT count(*) FROM TIBEX_ORDER WHERE INSTRUMENTID=:"SYS_B_0"
137 742 1 137.38 5.2 g0sg6v994wssq
Module: SQL*Plus
SELECT count(*) FROM TIBEX_FIXSESSIONSTATE WHERE INSTRUMENTID=:"SYS_B_0"
11 274 1 10.82 1.9 6mcpb06rctk0x
Module: DBMS_SCHEDULER
call dbms_space.auto_space_advisor_job_proc ( )
10 21 1 9.65 0.2 bbc1ck8594kvjEdited by: NM on 10-Sep-2010 07:39 -
Performance issue showing read by other session Event
Hi All,
we are having a severe performance issue in my database when we are running batch jobs.
This was a new database(11.2.0.2) and we are testing the performance by running some batch jobs. These batch jobs included some inserts and updates.
I am seeing read by other session in top 5 timed events and cache buffers chains in Latch Miss Sources section.
Please help me to solve this out.
Inst Num Startup Time Release RAC
1 27-Feb-12 09:03 11.2.0.2.0 NO
Platform CPUs Cores Sockets Memory(GB)
Linux x86 64-bit 8 8 8 48.00
Snap Id Snap Time Sessions Curs/Sess
Begin Snap: 5605 29-Feb-12 03:00:27 63 4.5
End Snap: 5614 29-Feb-12 12:00:47 63 4.3
Elapsed: 540.32 (mins)
DB Time: 1,774.23 (mins)
Cache Sizes Begin End
~~~~~~~~~~~ ---------- ----------
Buffer Cache: 1,952M 1,952M Std Block Size: 16K
Shared Pool Size: 1,024M 1,024M Log Buffer: 18,868K
Load Profile Per Second Per Transaction Per Exec Per Call
~~~~~~~~~~~~ --------------- --------------- ---------- ----------
DB Time(s): 3.3 0.8 0.02 0.05
DB CPU(s): 1.1 0.3 0.01 0.02
Redo size: 55,763.8 13,849.3
Logical reads: 23,906.6 5,937.4
Block changes: 325.7 80.9
Physical reads: 665.6 165.3
Physical writes: 40.4 10.0
User calls: 60.7 15.1
Parses: 10.6 2.6
Hard parses: 1.1 0.3
W/A MB processed: 0.6 0.2
Logons: 0.1 0.0
Executes: 151.2 37.6
Rollbacks: 0.0 0.0
Transactions: 4.0
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 99.94 Redo NoWait %: 100.00
Buffer Hit %: 97.90 In-memory Sort %: 100.00
Library Hit %: 98.06 Soft Parse %: 90.16
Execute to Parse %: 92.96 Latch Hit %: 100.00
Parse CPU to Parse Elapsd %: 76.71 % Non-Parse CPU: 98.57
Shared Pool Statistics Begin End
Memory Usage %: 89.38 87.96
% SQL with executions>1: 97.14 95.15
% Memory for SQL w/exec>1: 96.05 92.46
Top 5 Timed Foreground Events
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Avg
wait % DB
Event Waits Time(s) (ms) time Wait Class
db file sequential read 14,092,706 65,613 5 61.6 User I/O
DB CPU 34,819 32.7
read by other session 308,534 1,260 4 1.2 User I/O
direct path read 97,454 987 10 .9 User I/O
db file scattered read 71,870 910 13 .9 User I/O
Host CPU (CPUs: 8 Cores: 8 Sockets: 8)
~~~~~~~~ Load Average
Begin End %User %System %WIO %Idle
0.43 0.36 13.7 0.6 9.7 85.7
Instance CPU
~~~~~~~~~~~~
% of total CPU for Instance: 13.5
% of busy CPU for Instance: 94.2
%DB time waiting for CPU - Resource Mgr: 0.0
Memory Statistics
~~~~~~~~~~~~~~~~~ Begin End
Host Mem (MB): 49,152.0 49,152.0
SGA use (MB): 3,072.0 3,072.0
PGA use (MB): 506.5 629.1
% Host Mem used for SGA+PGA: 7.28 7.53
Time Model Statistics
-> Total time in database user-calls (DB Time): 106453.8s
-> Statistics including the word "background" measure background process
time, and so do not contribute to the DB time statistic
-> Ordered by % or DB time desc, Statistic name
Statistic Name Time (s) % of DB Time
sql execute elapsed time 105,531.1 99.1
DB CPU 34,818.8 32.7
parse time elapsed 714.7 .7
hard parse elapsed time 684.8 .6
PL/SQL execution elapsed time 161.9 .2
PL/SQL compilation elapsed time 44.2 .0
connection management call elapsed time 16.9 .0
hard parse (sharing criteria) elapsed time 10.2 .0
hard parse (bind mismatch) elapsed time 9.4 .0
sequence load elapsed time 2.9 .0
repeated bind elapsed time 0.5 .0
failed parse elapsed time 0.0 .0
DB time 106,453.8
background elapsed time 1,753.9
background cpu time 61.7
Operating System Statistics
-> *TIME statistic values are diffed.
All others display actual values. End Value is displayed if different
-> ordered by statistic type (CPU Use, Virtual Memory, Hardware Config), Name
Statistic Value End Value
BUSY_TIME 3,704,415
IDLE_TIME 22,203,740
IOWAIT_TIME 2,517,864
NICE_TIME 3
SYS_TIME 145,696
USER_TIME 3,557,758
LOAD 0 0
RSRC_MGR_CPU_WAIT_TIME 0
VM_IN_BYTES 358,813,045,760
VM_OUT_BYTES 29,514,830,848
PHYSICAL_MEMORY_BYTES 51,539,607,552
NUM_CPUS 8
NUM_CPU_CORES 8
NUM_CPU_SOCKETS 8
GLOBAL_RECEIVE_SIZE_MAX 4,194,304
GLOBAL_SEND_SIZE_MAX 1,048,586
TCP_RECEIVE_SIZE_DEFAULT 87,380
TCP_RECEIVE_SIZE_MAX 4,194,304
TCP_RECEIVE_SIZE_MIN 4,096
TCP_SEND_SIZE_DEFAULT 16,384
TCP_SEND_SIZE_MAX 4,194,304
TCP_SEND_SIZE_MIN 4,096
Operating System Statistics -
Snap Time Load %busy %user %sys %idle %iowait
29-Feb 03:00:27 0.4 N/A N/A N/A N/A N/A
29-Feb 04:00:35 1.4 11.9 11.2 0.6 88.1 14.3
29-Feb 05:00:41 1.7 13.8 13.2 0.6 86.2 15.8
29-Feb 06:00:48 1.5 14.0 13.5 0.6 86.0 12.3
29-Feb 07:01:00 1.8 16.3 15.8 0.5 83.7 10.4
29-Feb 08:00:12 2.6 23.2 22.5 0.6 76.8 12.6
29-Feb 09:00:26 1.3 16.6 16.0 0.5 83.4 5.7
29-Feb 10:00:33 1.2 13.8 13.3 0.5 86.2 2.0
29-Feb 11:00:43 1.3 14.5 14.0 0.5 85.5 3.8
29-Feb 12:00:47 0.4 4.9 4.2 0.7 95.1 10.6
Foreground Wait Class
-> s - second, ms - millisecond - 1000th of a second
-> ordered by wait time desc, waits desc
-> %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
-> Captured Time accounts for 97.9% of Total DB time 106,453.79 (s)
-> Total FG Wait Time: 69,415.64 (s) DB CPU time: 34,818.79 (s)
Avg
%Time Total Wait wait
Wait Class Waits -outs Time (s) (ms) %DB time
User I/O 14,693,843 0 69,222 5 65.0
DB CPU 34,819 32.7
Commit 40,629 0 119 3 0.1
System I/O 26,504 0 57 2 0.1
Network 1,945,010 0 11 0 0.0
Other 125,200 99 4 0 0.0
Application 2,673 0 2 1 0.0
Concurrency 3,059 0 1 0 0.0
Configuration 31 19 0 15 0.0
Foreground Wait Events
-> s - second, ms - millisecond - 1000th of a second
-> Only events with Total Wait Time (s) >= .001 are shown
-> ordered by wait time desc, waits desc (idle events last)
-> %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
Avg
%Time Total Wait wait Waits % DB
Event Waits -outs Time (s) (ms) /txn time
db file sequential read 14,092,706 0 65,613 5 108.0 61.6
read by other session 308,534 0 1,260 4 2.4 1.2
direct path read 97,454 0 987 10 0.7 .9
db file scattered read 71,870 0 910 13 0.6 .9
db file parallel read 35,001 0 372 11 0.3 .3
log file sync 40,629 0 119 3 0.3 .1
control file sequential re 26,504 0 57 2 0.2 .1
direct path read temp 14,499 0 49 3 0.1 .0
direct path write temp 9,186 0 28 3 0.1 .0
SQL*Net message to client 1,923,973 0 5 0 14.7 .0
SQL*Net message from dblin 1,056 0 5 5 0.0 .0
Disk file operations I/O 8,848 0 2 0 0.1 .0
ASM file metadata operatio 36 0 2 54 0.0 .0
SQL*Net break/reset to cli 2,636 0 1 1 0.0 .0
ADR block file read 472 0 1 1 0.0 .0
os thread startup 8 0 1 74 0.0 .0
SQL*Net more data to clien 17,656 0 1 0 0.1 .0
asynch descriptor resize 123,852 100 0 0 0.9 .0
local write wait 110 0 0 4 0.0 .0
utl_file I/O 55,635 0 0 0 0.4 .0
log file switch (private s 8 0 0 52 0.0 .0
cursor: pin S wait on X 2 0 0 142 0.0 .0
enq: KO - fast object chec 13 0 0 20 0.0 .0
PX Deq: Slave Session Stat 248 0 0 1 0.0 .0
enq: RO - fast object reus 18 0 0 11 0.0 .0
latch: cache buffers chain 2,511 0 0 0 0.0 .0
latch: shared pool 195 0 0 1 0.0 .0
CSS initialization 12 0 0 8 0.0 .0
PX qref latch 54 100 0 2 0.0 .0
SQL*Net more data from cli 995 0 0 0 0.0 .0
SQL*Net more data from dbl 300 0 0 0 0.0 .0
kksfbc child completion 1 100 0 56 0.0 .0
library cache: mutex X 244 0 0 0 0.0 .0
PX Deq: Signal ACK RSG 124 0 0 0 0.0 .0
undo segment extension 6 100 0 7 0.0 .0
PX Deq: Signal ACK EXT 124 0 0 0 0.0 .0
library cache load lock 3 0 0 9 0.0 .0
ADR block file write 45 0 0 1 0.0 .0
CSS operation: action 12 0 0 2 0.0 .0
reliable message 28 0 0 1 0.0 .0
CSS operation: query 72 0 0 0 0.0 .0
latch: row cache objects 14 0 0 1 0.0 .0
enq: SQ - contention 17 0 0 0 0.0 .0
latch free 32 0 0 0 0.0 .0
buffer busy waits 52 0 0 0 0.0 .0
enq: PS - contention 16 0 0 0 0.0 .0
enq: TX - row lock content 6 0 0 1 0.0 .0
SQL*Net message to dblink 1,018 0 0 0 0.0 .0
cursor: pin S 23 0 0 0 0.0 .0
latch: cache buffers lru c 8 0 0 0 0.0 .0
SQL*Net message from clien 1,923,970 0 944,508 491 14.7
jobq slave wait 66,732 100 33,334 500 0.5
Streams AQ: waiting for me 6,481 100 32,412 5001 0.0
wait for unread message on 32,858 98 32,411 986 0.3
PX Deq: Execution Msg 1,448 0 190 131 0.0
PX Deq: Execute Reply 1,196 0 74 62 0.0
HS message to agent 228 0 4 19 0.0
single-task message 42 0 4 97 0.0
PX Deq Credit: send blkd 904 0 2 3 0.0
PX Deq Credit: need buffer 205 0 1 3 0.0
Foreground Wait Events
-> s - second, ms - millisecond - 1000th of a second
-> Only events with Total Wait Time (s) >= .001 are shown
-> ordered by wait time desc, waits desc (idle events last)
-> %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
Avg
%Time Total Wait wait Waits % DB
Event Waits -outs Time (s) (ms) /txn time
PX Deq: Table Q Normal 4,291 0 1 0 0.0
PX Deq: Join ACK 124 0 0 1 0.0
PX Deq: Parse Reply 124 0 0 0 0.0
KSV master wait 256 0 0 0 0.0
Latch Miss Sources
-> only latches with sleeps are shown
-> ordered by name, sleeps desc
NoWait Waiter
Latch Name Where Misses Sleeps Sleeps
ASM map operation freeli kffmTranslate2 0 2 0
DML lock allocation ktadmc 0 2 0
FOB s.o list latch ksfd_allfob 0 2 2
In memory undo latch ktiFlushMe 0 5 0
In memory undo latch ktichg: child 0 3 0
PC and Classifier lists No latch 0 6 0
Real-time plan statistic keswxAddNewPlanEntry 0 20 20
SQL memory manager worka qesmmIRegisterWorkArea:1 0 1 1
active service list kswslogon: session logout 0 23 12
active service list kswssetsvc: PX session swi 0 6 1
active service list kswsite: service iterator 0 1 0
archive process latch kcrrgpll 0 3 3
cache buffers chains kcbgtcr_2 0 1,746 573
cache buffers chains kcbgtcr: fast path (cr pin 0 1,024 2,126
cache buffers chains kcbgcur_2 0 60 8
cache buffers chains kcbchg1: kslbegin: bufs no 0 16 3
cache buffers chains kcbgtcr: fast path 0 14 20
cache buffers chains kcbzibmlt: multi-block rea 0 10 0
cache buffers chains kcbrls_2 0 9 53
cache buffers chains kcbgtcr: kslbegin shared 0 8 1
cache buffers chains kcbrls_1 0 7 84
cache buffers chains kcbgtcr: kslbegin excl 0 6 14
cache buffers chains kcbnew: new latch again 0 6 0
cache buffers chains kcbzgb: scan from tail. no 0 6 0
cache buffers chains kcbzwb 0 5 8
cache buffers chains kcbgcur: fast path (shr) 0 3 0
cache buffers chains kcbget: pin buffer 0 3 0
cache buffers chains kcbzhngcbk2_1 0 1 0
cache buffers lru chain kcbzgws 0 19 0
cache buffers lru chain kcbo_link_q 0 3 0
call allocation ksuxds 0 14 10
call allocation ksudlp: top call 0 2 3
enqueue hash chains ksqgtl3 0 2 1
enqueue hash chains ksqrcl 0 1 2
enqueues ksqgel: create enqueue 0 1 0
object queue header oper kcbo_unlink_q 0 5 2
object queue header oper kcbo_sw_buf 0 2 0
object queue header oper kcbo_link_q 0 1 2
object queue header oper kcbo_switch_cq 0 1 2
object queue header oper kcbo_switch_mq_bg 0 1 4
parallel query alloc buf kxfpbalo 0 1 1
process allocation ksucrp:1 0 2 0
process queue reference kxfpqrsnd 0 1 0
qmn task queue latch kwqmnmvtsks: delay to read 0 1 0
redo allocation kcrfw_redo_gen: redo alloc 0 17 0
row cache objects kqreqd: reget 0 6 0
row cache objects kqrpre: find obj 0 6 13
row cache objects kqrso 0 2 0
row cache objects kqreqd 0 1 2
row cache objects kqrpre: init complete 0 1 1
shared pool kghalo 0 199 106
shared pool kghupr1 0 39 109
shared pool kghfre 0 18 19
shared pool kghalp 0 7 29
space background task la ktsj_grab_task 0 21 27
Mutex Sleep Summary
-> ordered by number of sleeps desc
Wait
Mutex Type Location Sleeps Time (ms)
Library Cache kglhdgn2 106 338 12
Library Cache kgllkc1 57 259 10
Library Cache kgllkdl1 85 123 21
Cursor Pin kkslce [KKSCHLPIN2] 70 286
Library Cache kglget2 2 31 1
Library Cache kglhdgn1 62 31 2
Library Cache kglpin1 4 26 1
Library Cache kglpnal1 90 18 0
Library Cache kglpndl1 95 15 2
Library Cache kgllldl2 112 6 0
Library Cache kglini1 32 1 0
-------------------------------------------------------------Thanks in advance.Hi,
Thanks for reply.
I provided one hour report.
Inst Num Startup Time Release RAC
1 27-Feb-12 09:03 11.2.0.2.0 NO
Platform CPUs Cores Sockets Memory(GB)
Linux x86 64-bit 8 8 8 48.00
Snap Id Snap Time Sessions Curs/Sess
Begin Snap: 5606 29-Feb-12 04:00:35 63 3.7
End Snap: 5607 29-Feb-12 05:00:41 63 3.6
Elapsed: 60.11 (mins)
DB Time: 382.67 (mins)
Cache Sizes Begin End
~~~~~~~~~~~ ---------- ----------
Buffer Cache: 1,952M 1,952M Std Block Size: 16K
Shared Pool Size: 1,024M 1,024M Log Buffer: 18,868K
Load Profile Per Second Per Transaction Per Exec Per Call
~~~~~~~~~~~~ --------------- --------------- ---------- ----------
DB Time(s): 6.4 0.8 0.03 0.03
DB CPU(s): 1.0 0.1 0.00 0.00
Redo size: 84,539.3 10,425.6
Logical reads: 23,345.6 2,879.1
Block changes: 386.5 47.7
Physical reads: 1,605.0 197.9
Physical writes: 7.1 0.9
User calls: 233.9 28.9
Parses: 4.0 0.5
Hard parses: 0.1 0.0
W/A MB processed: 0.1 0.0
Logons: 0.1 0.0
Executes: 210.9 26.0
Rollbacks: 0.0 0.0
Transactions: 8.1
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 99.62 Redo NoWait %: 100.00
Buffer Hit %: 95.57 In-memory Sort %: 100.00
Library Hit %: 99.90 Soft Parse %: 98.68
Execute to Parse %: 98.10 Latch Hit %: 99.99
Parse CPU to Parse Elapsd %: 32.08 % Non-Parse CPU: 99.90
Shared Pool Statistics Begin End
Memory Usage %: 89.25 89.45
% SQL with executions>1: 96.79 97.52
% Memory for SQL w/exec>1: 95.67 96.56
Top 5 Timed Foreground Events
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Avg
wait % DB
Event Waits Time(s) (ms) time Wait Class
db file sequential read 3,054,464 17,002 6 74.0 User I/O
DB CPU 3,748 16.3
read by other session 199,603 796 4 3.5 User I/O
direct path read 46,301 439 9 1.9 User I/O
db file scattered read 21,113 269 13 1.2 User I/O
Host CPU (CPUs: 8 Cores: 8 Sockets: 8)
~~~~~~~~ Load Average
Begin End %User %System %WIO %Idle
1.45 1.67 13.2 0.6 15.8 86.2
Instance CPU
~~~~~~~~~~~~
% of total CPU for Instance: 13.0
% of busy CPU for Instance: 94.7
%DB time waiting for CPU - Resource Mgr: 0.0
Memory Statistics
~~~~~~~~~~~~~~~~~ Begin End
Host Mem (MB): 49,152.0 49,152.0
SGA use (MB): 3,072.0 3,072.0
PGA use (MB): 513.5 467.7
% Host Mem used for SGA+PGA: 7.29 7.20
Time Model Statistics
-> Total time in database user-calls (DB Time): 22960.5s
-> Statistics including the word "background" measure background process
time, and so do not contribute to the DB time statistic
-> Ordered by % or DB time desc, Statistic name
Statistic Name Time (s) % of DB Time
sql execute elapsed time 22,835.9 99.5
DB CPU 3,748.4 16.3
parse time elapsed 15.4 .1
hard parse elapsed time 14.3 .1
PL/SQL execution elapsed time 7.5 .0
PL/SQL compilation elapsed time 6.0 .0
connection management call elapsed time 1.6 .0
sequence load elapsed time 0.4 .0
hard parse (sharing criteria) elapsed time 0.0 .0
repeated bind elapsed time 0.0 .0
failed parse elapsed time 0.0 .0
DB time 22,960.5
background elapsed time 238.1
background cpu time 4.9
Operating System Statistics
-> *TIME statistic values are diffed.
All others display actual values. End Value is displayed if different
-> ordered by statistic type (CPU Use, Virtual Memory, Hardware Config), Name
Statistic Value End Value
BUSY_TIME 396,506
IDLE_TIME 2,483,725
IOWAIT_TIME 455,495
NICE_TIME 0
SYS_TIME 16,163
USER_TIME 380,052
LOAD 1 2
RSRC_MGR_CPU_WAIT_TIME 0
VM_IN_BYTES 95,646,943,232
VM_OUT_BYTES 1,686,059,008
PHYSICAL_MEMORY_BYTES 51,539,607,552
NUM_CPUS 8
NUM_CPU_CORES 8
NUM_CPU_SOCKETS 8
GLOBAL_RECEIVE_SIZE_MAX 4,194,304
GLOBAL_SEND_SIZE_MAX 1,048,586
TCP_RECEIVE_SIZE_DEFAULT 87,380
TCP_RECEIVE_SIZE_MAX 4,194,304
TCP_RECEIVE_SIZE_MIN 4,096
TCP_SEND_SIZE_DEFAULT 16,384
TCP_SEND_SIZE_MAX 4,194,304
TCP_SEND_SIZE_MIN 4,096
Operating System Statistics -
Snap Time Load %busy %user %sys %idle %iowait
29-Feb 04:00:35 1.4 N/A N/A N/A N/A N/A
29-Feb 05:00:41 1.7 13.8 13.2 0.6 86.2 15.8
Foreground Wait Class
-> s - second, ms - millisecond - 1000th of a second
-> ordered by wait time desc, waits desc
-> %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
-> Captured Time accounts for 97.6% of Total DB time 22,960.46 (s)
-> Total FG Wait Time: 18,651.75 (s) DB CPU time: 3,748.35 (s)
Avg
%Time Total Wait wait
Wait Class Waits -outs Time (s) (ms) %DB time
User I/O 3,327,253 0 18,576 6 80.9
DB CPU 3,748 16.3
Commit 23,882 0 69 3 0.3
System I/O 1,035 0 3 3 0.0
Network 842,393 0 2 0 0.0
Other 10,120 99 0 0 0.0
Configuration 3 0 0 58 0.0
Application 264 0 0 1 0.0
Concurrency 1,482 0 0 0 0.0
Foreground Wait Events
-> s - second, ms - millisecond - 1000th of a second
-> Only events with Total Wait Time (s) >= .001 are shown
-> ordered by wait time desc, waits desc (idle events last)
-> %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
Avg
%Time Total Wait wait Waits % DB
Event Waits -outs Time (s) (ms) /txn time
db file sequential read 3,054,464 0 17,002 6 104.5 74.0
read by other session 199,603 0 796 4 6.8 3.5
direct path read 46,301 0 439 9 1.6 1.9
db file scattered read 21,113 0 269 13 0.7 1.2
log file sync 23,882 0 69 3 0.8 .3
db file parallel read 4,727 0 68 14 0.2 .3
control file sequential re 1,035 0 3 3 0.0 .0
SQL*Net message to client 840,792 0 2 0 28.8 .0
direct path read temp 95 0 2 18 0.0 .0
local write wait 79 0 0 4 0.0 .0
Disk file operations I/O 870 0 0 0 0.0 .0
ASM file metadata operatio 4 0 0 50 0.0 .0
log file switch (private s 3 0 0 58 0.0 .0
ADR block file read 36 0 0 3 0.0 .0
enq: RO - fast object reus 5 0 0 16 0.0 .0
latch: cache buffers chain 1,465 0 0 0 0.1 .0
SQL*Net break/reset to cli 256 0 0 0 0.0 .0
asynch descriptor resize 10,059 100 0 0 0.3 .0
SQL*Net more data to clien 1,510 0 0 0 0.1 .0
enq: KO - fast object chec 3 0 0 8 0.0 .0
SQL*Net more data from cli 91 0 0 0 0.0 .0
latch: shared pool 14 0 0 0 0.0 .0
ADR block file write 5 0 0 1 0.0 .0
reliable message 8 0 0 0 0.0 .0
direct path write temp 1 0 0 2 0.0 .0
SQL*Net message from clien 840,794 0 68,885 82 28.8
jobq slave wait 7,365 100 3,679 499 0.3
Streams AQ: waiting for me 721 100 3,605 5000 0.0
wait for unread message on 3,648 98 3,603 988 0.1
KSV master wait 20 0 0 0 0.0
Background Wait Events
-> ordered by wait time desc, waits desc (idle events last)
-> Only events with Total Wait Time (s) >= .001 are shown
-> %Timeouts: value of 0 indicates value was < .5%. Value of null is truly 0
Avg
%Time Total Wait wait Waits % bg
Event Waits -outs Time (s) (ms) /txn time
log file parallel write 29,353 0 83 3 1.0 34.8
db file parallel write 5,753 0 17 3 0.2 6.9
db file sequential read 1,638 0 15 9 0.1 6.1
control file sequential re 5,142 0 13 2 0.2 5.4
os thread startup 140 0 8 58 0.0 3.4
control file parallel writ 1,440 0 8 6 0.0 3.4
log file sequential read 304 0 8 26 0.0 3.3
db file scattered read 214 0 2 9 0.0 .8
ASM file metadata operatio 1,199 0 1 1 0.0 .3
direct path write 35 0 0 6 0.0 .1
direct path read 41 0 0 5 0.0 .1
kfk: async disk IO 6 0 0 9 0.0 .0
Disk file operations I/O 1,266 0 0 0 0.0 .0
ADR block file read 16 0 0 2 0.0 .0
read by other session 3 0 0 8 0.0 .0
Log archive I/O 2 0 0 10 0.0 .0
log file sync 3 0 0 5 0.0 .0
asynch descriptor resize 341 100 0 0 0.0 .0
CSS initialization 1 0 0 6 0.0 .0
log file single write 4 0 0 1 0.0 .0
latch: redo allocation 3 0 0 1 0.0 .0
ADR block file write 5 0 0 1 0.0 .0
LGWR wait for redo copy 45 0 0 0 0.0 .0
CSS operation: query 6 0 0 0 0.0 .0
CSS operation: action 1 0 0 1 0.0 .0
SQL*Net message to client 420 0 0 0 0.0 .0
rdbms ipc message 47,816 39 61,046 1277 1.6
DIAG idle wait 7,200 100 7,200 1000 0.2
Space Manager: slave idle 1,146 98 5,674 4951 0.0
class slave wait 284 0 3,983 14026 0.0
dispatcher timer 61 100 3,660 60006 0.0
Streams AQ: qmn coordinato 258 50 3,613 14003 0.0
Streams AQ: qmn slave idle 130 0 3,613 27789 0.0
Streams AQ: waiting for ti 7 71 3,608 515430 0.0
wait for unread message on 3,605 100 3,606 1000 0.1
pmon timer 1,201 100 3,604 3001 0.0
smon timer 15 73 3,603 240207 0.0
ASM background timer 754 0 3,602 4777 0.0
shared server idle wait 120 100 3,601 30006 0.0
SQL*Net message from clien 554 0 4 7 0.0
KSV master wait 101 0 0 2 0.0
Wait Event Histogram
-> Units for Total Waits column: K is 1000, M is 1000000, G is 1000000000
-> % of Waits: value of .0 indicates value was <.05%; value of null is truly 0
-> % of Waits: column heading of <=1s is truly <1024ms, >1s is truly >=1024ms
-> Ordered by Event (idle events last)
% of Waits
Total
Event Waits <1ms <2ms <4ms <8ms <16ms <32ms <=1s >1s
ADR block file read 52 73.1 1.9 9.6 13.5 1.9
ADR block file write 10 100.0
ADR file lock 12 100.0
ARCH wait for archivelog l 3 100.0
ASM file metadata operatio 1203 97.3 .5 .7 .3 .2 .9
CSS initialization 1 100.0
CSS operation: action 1 100.0
CSS operation: query 6 83.3 16.7
Disk file operations I/O 2118 95.4 4.5 .1
LGWR wait for redo copy 45 100.0
Log archive I/O 2 100.0
SQL*Net break/reset to cli 256 99.6 .4
SQL*Net message to client 839.9 100.0 .0
SQL*Net more data from cli 91 100.0
SQL*Net more data to clien 1503 100.0
asynch descriptor resize 10.4K 100.0
buffer busy waits 2 100.0
control file parallel writ 1440 5.7 35.1 24.0 16.3 12.0 5.5 1.5
control file sequential re 6177 69.4 7.5 5.9 8.1 7.1 1.7 .3
db file parallel read 4727 1.7 3.2 3.2 10.1 46.6 33.3 1.8
db file parallel write 5755 42.3 21.3 18.6 11.2 4.6 1.4 .5
db file scattered read 21.5K 8.4 4.3 11.9 18.9 26.3 25.3 4.9
db file sequential read 3053. 28.7 15.1 11.1 17.9 21.5 5.4 .3 .0
direct path read 46.3K 9.9 8.8 18.5 21.7 22.8 15.7 2.7
direct path read temp 95 9.5 9.5 23.2 49.5 8.4
direct path write 35 11.4 31.4 17.1 22.9 11.4 2.9 2.9
direct path write temp 1 100.0
enq: KO - fast object chec 3 66.7 33.3
enq: RO - fast object reus 5 20.0 20.0 20.0 20.0 20.0
kfk: async disk IO 6 50.0 16.7 16.7 16.7
latch free 3 100.0
latch: cache buffers chain 1465 100.0
latch: cache buffers lru c 1 100.0
latch: object queue header 2 100.0
latch: redo allocation 3 33.3 33.3 33.3
latch: row cache objects 2 100.0
latch: shared pool 15 93.3 6.7
local write wait 79 35.4 34.2 21.5 8.9
log file parallel write 29.4K 47.8 21.7 11.9 9.9 6.8 1.6 .3
log file sequential read 304 6.3 3.0 3.6 10.2 23.4 24.3 29.3
log file single write 4 25.0 75.0
log file switch (private s 3 100.0
log file sync 23.9K 40.9 28.0 12.9 9.7 6.7 1.5 .3
os thread startup 140 100.0
read by other session 199.6 37.1 19.9 12.9 13.1 13.8 3.1 .2
reliable message 8 100.0
ASM background timer 755 2.9 .4 .1 .1 .3 .1 .3 95.8
DIAG idle wait 7196 100.0
KSV master wait 121 88.4 2.5 3.3 2.5 .8 .8 1.7
SQL*Net message from clien 840.1 97.1 1.8 .5 .2 .2 .1 .0 .1
Space Manager: slave idle 1147 .1 .5 99.4
Streams AQ: qmn coordinato 258 49.6 .4 50.0
Streams AQ: qmn slave idle 130 .8 99.2
Streams AQ: waiting for me 721 100.0
Streams AQ: waiting for ti 7 28.6 42.9 28.6
class slave wait 283 39.9 2.5 2.5 3.5 4.9 9.2 15.2 22.3
dispatcher timer 60 100.0
jobq slave wait 7360 .0 .0 .0 99.9
pmon timer 1201 100.0
rdbms ipc message 47.8K 2.7 31.6 17.4 1.1 1.1 .9 20.9 24.3
Wait Event Histogram DB/Inst: I2KPROD/I2KPROD Snaps: 5606-5607
-> Units for Total Waits column: K is 1000, M is 1000000, G is 1000000000
-> % of Waits: value of .0 indicates value was <.05%; value of null is truly 0
-> % of Waits: column heading of <=1s is truly <1024ms, >1s is truly >=1024ms
-> Ordered by Event (idle events last)
% of Waits
Total
Event Waits <1ms <2ms <4ms <8ms <16ms <32ms <=1s >1s
shared server idle wait 120 100.0
smon timer 16 6.3 93.8
wait for unread message on 7250 .1 99.9
Latch Miss Sources
-> only latches with sleeps are shown
-> ordered by name, sleeps desc
NoWait Waiter
Latch Name Where Misses Sleeps Sleeps
In memory undo latch ktichg: child 0 1 0
active service list kswslogon: session logout 0 2 0
cache buffers chains kcbgtcr_2 0 1,123 483
cache buffers chains kcbgtcr: fast path (cr pin 0 496 1,131
cache buffers chains kcbrls_2 0 5 6
cache buffers chains kcbgcur_2 0 4 0
cache buffers chains kcbgtcr: fast path 0 3 1
cache buffers chains kcbzwb 0 2 4
cache buffers chains kcbchg1: kslbegin: bufs no 0 1 0
cache buffers chains kcbnew: new latch again 0 1 0
cache buffers chains kcbrls_1 0 1 6
cache buffers chains kcbzgb: scan from tail. no 0 1 0
cache buffers lru chain kcbzgws 0 1 0
object queue header oper kcbo_switch_cq 0 1 0
object queue header oper kcbo_switch_mq_bg 0 1 2
redo allocation kcrfw_redo_gen: redo alloc 0 3 0
row cache objects kqrpre: find obj 0 1 1
row cache objects kqrso 0 1 0
shared pool kghalo 0 13 3
shared pool kghupr1 0 4 15
shared pool kghalp 0 1 0
space background task la ktsj_grab_task 0 2 2
------------------------------------------------------------- -
Performance issue with high CPU and IO
Hi guys,
I am encountering huge user response time on a production system and I don’t know how to solve it.
Doing some extra tests and using the instrumentation that we have in the code we concluded that the DB is the bottleneck.
We generated some AWR reports and noticed the CPU was in top wait events. Also noticed that in a random manner some simple sql take a long time to execute. We activated the sql trace on the system and noticed that for very simple SQLs (unique index access on one table) we have huge exec times. 9s
In the trace file the huge time we had it in fetch area: 9.1s cpu and elapsed 9.2.
And no or very small waits for this specific SQL.
it seems like the bottle neck is on the CPU but at that point there were very few processes running on the DB. Why can we have such a big cpu wait on a simple select? This is a machine with 128 cores. We have quicker responses on machines smaller/busier than this.
We noticed that we had a huge db_cache_size (12G) and after we scale it down we noticed some improvements but not enough. How can I prove that there is a link between high CPU and big cache_size? (there was not wait involved in SQL execution). what can we do in the case we need big DB cache size?
The second issue is that I tried to execute an sql on a big table (FTS on a big table. no join). Again on that smaller machine it runs in 30 seconds and on this machine it runs in 1038 seconds.
Also generated a trace for this SQL on the problematic machine:
call count cpu elapsed disk query current rows
Parse 1 0.00 0.00 0 0 0 0
Execute 1 0.00 0.00 0 0 0 0
Fetch 1 402.08 1038.31 1842916 6174343 0 1
total 3 402.08 1038.32 1842916 6174343 0 1
db file sequential read 12419 0.21 40.02
i/o slave wait 135475 0.51 613.03
db file scattered read 135475 0.52 675.15
log file switch completion 5 0.06 0.18
latch: In memory undo latch 6 0.00 0.00
latch: object queue header operation 1 0.00 0.00
********************************************************************************The high CPU is present here also but here I have huge wait on db file scattered read.
Looking at the session with the select the AWG_wait for db scattered read was 0.5. on the other machine it is like 0.07.
I though this is an IO issue. I did some IO tests at SO level and it seems like the read and writes operation are very fast…much faster than the machine that has the awg_wait smaller. Why the difference in waits?
One difference between these two DBs is that the problem one has the db block size = 16k and the other one has 8k.
I received some reports done at OS level on CPU and IO usage on the problematic machine (in normal operations). It seems like the CPU is very used and the IO stays very low.
On the other machine, the smaller and the faster one, it is other way around.
What is the problem here? How can I test further? Can I link the high CPU to low/slow IO?
we have 10G on sun os with ASM.
Thanks in advance.Yes, there are many things you can and should do to isolate this. But first check MOS Poor Performance With Oracle9i and 10g Releases When Using Dynamic Intimate Shared Memory (DISM) [ID 1018855.1] isn't messing you up to start.
Also, be sure and post exact patch levels for both Oracle and OS.
Be sure and check all your I/O settings and see what MOS has to say about those.
Are you using ASSM? See Long running update
Since it got a little better with shrinking the SGA size, that might indicate (wild speculation here, something like) one of the problems is simply too much thrashing within the SGA, as oracle decides "small" objects being full scanned in memory is faster than range scans (or whatever) from disk, overloading the cpu, not allowing the cpu to ask for other full scans from I/O. Possibly made worse by row level locking, or some other app issue that just does too much cpu.
You probably have more than one thing wrong. High fetch count might mean you need to adjust the array size on the clients.
Now that that is all out of the way, if you still haven't found the problem, go through http://oracle-randolf.blogspot.com/2009/02/basic-sql-statement-performance.html
Edit: Oh, see Solaris 10 memory management conflicts with Automatic PGA Memory Management [ID 460424.1] too.
Edited by: jgarry on Nov 15, 2011 1:45 PM -
AWR Report - suggestions to improve performance.
Hi Folks,
Web application server version - 10.1.2.0.2
Database version - 10.1.0.4.0
OS version - AIX 5.3
WORKLOAD REPOSITORY report for
DB Name DB Id Instance Inst Num Release Cluster Host
xxxx 3419432639 xxxx 1 10.1.0.4.0 NO hostname
Snap Id Snap Time Sessions Curs/Sess
Begin Snap: 16598 07-Jul-09 16:30:54 23 60.7
End Snap: 16599 07-Jul-09 17:30:46 36 94.1
Elapsed: 59.88 (mins)
DB Time: 44.99 (mins)
Cache Sizes (end)
~~~~~~~~~~~~~~~~~
Buffer Cache: 1,536M Std Block Size: 8K
Shared Pool Size: 1,248M Log Buffer: 1,024K
Load Profile
~~~~~~~~~~~~ Per Second Per Transaction
Redo size: 30,495.86 138,156.74
Logical reads: 1,735.49 7,862.39
Block changes: 197.66 895.45
Physical reads: 564.70 2,558.28
Physical writes: 54.64 247.52
User calls: 2.00 9.04
Parses: 14.32 64.87
Hard parses: 1.37 6.22
Sorts: 5.83 26.42
Logons: 0.12 0.54
Executes: 72.71 329.38
Transactions: 0.22
% Blocks changed per Read: 11.39 Recursive Call %: 99.64
Rollback per transaction %: 17.53 Rows per Sort: 5933.99
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 100.00 Redo NoWait %: 100.00
Buffer Hit %: 71.24 In-memory Sort %: 99.79
Library Hit %: 96.22 Soft Parse %: 90.41
Execute to Parse %: 80.31 Latch Hit %: 99.99
Parse CPU to Parse Elapsd %: 21.82 % Non-Parse CPU: 96.80
Shared Pool Statistics Begin End
Memory Usage %: 13.13 27.55
% SQL with executions>1: 61.04 15.52
% Memory for SQL w/exec>1: 60.96 12.31
Top 5 Timed Events
~~~~~~~~~~~~~~~~~~ % Total
Event Waits Time (s) DB Time Wait Class
db file scattered read 135,977 1,204 44.62 User I/O
CPU time 547 20.26
db file sequential read 99,521 187 6.92 User I/O
log file parallel write 10,995 16 .59 System I/O
direct path write temp 7,225 13 .47 User I/O
Wait Events DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> s - second
-> cs - centisecond - 100th of a second
-> ms - millisecond - 1000th of a second
-> us - microsecond - 1000000th of a second
-> ordered by wait time desc, waits desc (idle events last)
Avg
Total Wait wait Waits
Event Waits Timeouts Time (s) (ms) /txn
db file scattered read 135,977 0 1,204 9 171.5
db file sequential read 99,521 0 187 2 125.5
log file parallel write 10,995 0 16 1 13.9
direct path write temp 7,225 0 13 2 9.1
process startup 117 1 7 58 0.1
latch: library cache 306 0 5 15 0.4
direct path read temp 152,490 0 4 0 192.3
db file parallel write 342 0 4 11 0.4
log file sync 309 3 4 13 0.4
db file parallel read 359 0 3 8 0.5
latch: cache buffers lru ch 80 0 2 19 0.1
control file parallel write 1,325 0 1 1 1.7
latch: row cache objects 26 0 1 51 0.0
latch: cache buffers chains 138 138 1 9 0.2
log file switch completion 3 0 1 399 0.0
buffer busy waits 94 0 1 10 0.1
latch: shared pool 44 0 0 6 0.1
control file sequential rea 1,258 0 0 0 1.6
latch: object queue header 3 0 0 41 0.0
SQL*Net message to client 5,866 0 0 0 7.4
LGWR wait for redo copy 495 1 0 0 0.6
direct path read 58 0 0 1 0.1
latch: session allocation 6 0 0 6 0.0
latch: In memory undo latch 3 0 0 10 0.0
SQL*Net break/reset to clie 62 0 0 0 0.1
control file single write 40 0 0 1 0.1
latch: redo allocation 12 0 0 2 0.0
latch free 2 0 0 11 0.0
enq: TX - index contention 1 0 0 21 0.0
latch: messages 8 0 0 2 0.0
log file single write 2 0 0 4 0.0
direct path write 99 0 0 0 0.1
SQL*Net more data to client 237 0 0 0 0.3
log file sequential read 2 0 0 2 0.0
latch: library cache lock 1 0 0 3 0.0
latch: enqueue hash chains 3 0 0 0 0.0
SQL*Net more data from clie 2 0 0 0 0.0
SQL*Net message from client 5,855 0 23,607 4032 7.4
jobq slave wait 3,441 3,334 9,925 2884 4.3
Queue Monitor Wait 1,537 623 3,532 2298 1.9
Queue Monitor Slave Wait 503 0 3,532 7022 0.6
wakeup time manager 12 0 3,527 293898 0.0
virtual circuit status 120 120 3,512 29266 0.2
class slave wait 2 2 10 4883 0.0
Background Wait Events DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> ordered by wait time desc, waits desc (idle events last)
Avg
Total Wait wait Waits
Event Waits Timeouts Time (s) (ms) /txn
log file parallel write 10,995 0 16 1 13.9
process startup 117 1 7 58 0.1
db file sequential read 1,255 0 4 3 1.6
db file parallel write 342 0 4 11 0.4
control file parallel write 1,329 0 1 1 1.7
db file scattered read 151 0 1 7 0.2
latch: cache buffers lru ch 32 0 0 15 0.0
latch: library cache 5 0 0 69 0.0
control file sequential rea 213 0 0 1 0.3
latch: cache buffers chains 2 2 0 34 0.0
LGWR wait for redo copy 495 1 0 0 0.6
control file single write 40 0 0 1 0.1
latch: redo allocation 12 0 0 2 0.0
latch: messages 8 0 0 2 0.0
latch: object queue header 2 0 0 8 0.0
log file single write 2 0 0 4 0.0
direct path write 25 0 0 0 0.0
buffer busy waits 1 0 0 7 0.0
latch: shared pool 2 0 0 2 0.0
log file sequential read 2 0 0 2 0.0
direct path read 22 0 0 0 0.0
rdbms ipc message 15,461 10,346 26,675 1725 19.5
Queue Monitor Wait 1,537 623 3,532 2298 1.9
Queue Monitor Slave Wait 503 0 3,532 7022 0.6
wakeup time manager 12 0 3,527 293898 0.0
smon timer 175 8 3,418 19530 0.2
Time Model Statistics DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> ordered by Time (seconds) desc
Time % Total
Statistic Name (seconds) DB Time
sql execute elapsed time 2,708.75 100.35
DB time 2,699.22 100.00
DB CPU 546.94 20.26
background elapsed time 113.64 4.21
parse time elapsed 90.88 3.37
hard parse elapsed time 59.03 2.19
PL/SQL execution elapsed time 56.46 2.09
Java execution elapsed time 8.99 .33
background cpu time 8.18 .30
PL/SQL compilation elapsed time 4.55 .17
connection management call elapsed time 1.08 .04
failed parse elapsed time .73 .03
hard parse (sharing criteria) elapsed time .70 .03
hard parse (bind mismatch) elapsed time .61 .02
sequence load elapsed time .41 .02
inbound PL/SQL rpc elapsed time .00 .00
failed parse (out of shared memory) elapsed t .00 .00
Operating System Statistics DB/Inst: xxxx/xxxx Snaps: 16598-16599
Statistic Name Value
AVG_BUSY_TICKS 771,364
AVG_IDLE_TICKS 346,024
AVG_IN_BYTES 3,812,632,576
AVG_IOWAIT_TICKS 38,470
AVG_OUT_BYTES 1,141,137,408
AVG_SYS_TICKS 2,786
AVG_USER_TICKS 13,588
BUSY_TICKS 3,085,837
IDLE_TICKS 1,384,395
IN_BYTES 15,250,530,304
IOWAIT_TICKS 154,103
OS_CPU_WAIT_TIME 70,200
OUT_BYTES 4,564,549,632
RSRC_MGR_CPU_WAIT_TIME 0
SYS_TICKS 11,439
USER_TICKS 54,613
Service Statistics DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> ordered by DB Time
Physical Logical
Service Name DB Time (s) DB CPU (s) Reads Reads
xxxx 2,032.9 519.7 1,804,948 5,709,611
SYS$USERS 666.3 27.2 219,320 501,732
SYS$BACKGROUND 0.0 0.0 4,565 28,708
xxxxXDB 0.0 0.0 0 0
Service Wait Class Stats DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> Wait Class info for services in the Service Statistics section.
-> Total Waits and Time Waited displayed for the following wait
classes: User I/O, Concurrency, Administrative, Network
-> Time Waited (Wt Time) in centisecond (100th of a second)
Service Name
User I/O User I/O Concurcy Concurcy Admin Admin Network Network
Total Wts Wt Time Total Wts Wt Time Total Wts Wt Time Total Wts Wt Time
xxxx
374696 127922 0 0 0 0 3701 7
SYS$USERS
18820 12406 172 222 0 0 2129 0
SYS$BACKGROUND
2218 783 0 0 0 0 0 0
SQL ordered by Elapsed Time DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> Resources reported for PL/SQL code includes the resources used by all SQL
statements called by the code.
-> % Total DB Time is the Elapsed Time of the SQL statement divided
into the Total Database Time multiplied by 100
<<<<<<<<<<<<<<<<<<<<<<<<<<<SQLs Deleted >>>>>>>>>>>>
SQL ordered by Sharable Memory DB/Inst: xxxx/xxxx Snaps: 16598-16599
No data exists for this section of the report.
SQL ordered by Version Count DB/Inst: xxxx/xxxx Snaps: 16598-16599
No data exists for this section of the report.
Instance Activity Stats DB/Inst: xxxx/xxxx Snaps: 16598-16599
Statistic Total per Second per Trans
CPU used by this session 53,470 14.9 67.4
CPU used when call started 51,928 14.5 65.5
CR blocks created 5,298 1.5 6.7
Cached Commit SCN referenced 192,226 53.5 242.4
Commit SCN cached 3,613 1.0 4.6
DB time 1,253,838 349.0 1,581.1
DBWR checkpoint buffers written 4,304 1.2 5.4
DBWR checkpoints 1 0.0 0.0
DBWR transaction table writes 59 0.0 0.1
DBWR undo block writes 5,557 1.6 7.0
IMU CR rollbacks 1 0.0 0.0
IMU Flushes 191 0.1 0.2
IMU Redo allocation size 860,820 239.6 1,085.5
IMU commits 381 0.1 0.5
IMU contention 5 0.0 0.0
IMU ktichg flush 1 0.0 0.0
IMU undo allocation size 1,839,872 512.1 2,320.1
SQL*Net roundtrips to/from clien 5,591 1.6 7.1
active txn count during cleanout 948 0.3 1.2
application wait time 4 0.0 0.0
background checkpoints completed 1 0.0 0.0
background checkpoints started 1 0.0 0.0
background timeouts 10,366 2.9 13.1
buffer is not pinned count 2,387,595 664.6 3,010.8
buffer is pinned count 792,051 220.5 998.8
bytes received via SQL*Net from 333,467 92.8 420.5
bytes sent via SQL*Net to client 2,449,972 682.0 3,089.5
calls to get snapshot scn: kcmgs 319,869 89.0 403.4
calls to kcmgas 17,576 4.9 22.2
calls to kcmgcs 1,912 0.5 2.4
change write time 2,175 0.6 2.7
cleanout - number of ktugct call 4,589 1.3 5.8
cluster key scan block gets 579,340 161.3 730.6
cluster key scans 283,013 78.8 356.9
commit cleanout failures: block 1 0.0 0.0
commit cleanout failures: buffer 1 0.0 0.0
commit cleanout failures: callba 1 0.0 0.0
commit cleanout failures: cannot 5 0.0 0.0
commit cleanouts 25,713 7.2 32.4
commit cleanouts successfully co 25,705 7.2 32.4
commit txn count during cleanout 4,110 1.1 5.2
concurrency wait time 650 0.2 0.8
consistent changes 7,352 2.1 9.3
consistent gets 5,509,829 1,533.7 6,948.1
consistent gets - examination 1,061,141 295.4 1,338.1
consistent gets direct 39 0.0 0.1
consistent gets from cache 5,509,790 1,533.7 6,948.0
cursor authentications 310 0.1 0.4
data blocks consistent reads - u 6,747 1.9 8.5
db block changes 710,092 197.7 895.5
db block gets 725,044 201.8 914.3
db block gets direct 14,789 4.1 18.7
db block gets from cache 710,255 197.7 895.7
deferred (CURRENT) block cleanou 14,036 3.9 17.7
dirty buffers inspected 9,309 2.6 11.7
enqueue conversions 926 0.3 1.2
enqueue releases 92,643 25.8 116.8
enqueue requests 92,643 25.8 116.8
enqueue waits 1 0.0 0.0
execute count 261,199 72.7 329.4
Instance Activity Stats DB/Inst: xxxx/xxxx Snaps: 16598-16599
Statistic Total per Second per Trans
free buffer inspected 1,719,681 478.7 2,168.6
free buffer requested 1,804,893 502.4 2,276.0
heap block compress 1,617 0.5 2.0
hot buffers moved to head of LRU 295,841 82.4 373.1
immediate (CR) block cleanout ap 3,664 1.0 4.6
immediate (CURRENT) block cleano 6,108 1.7 7.7
index fast full scans (full) 533 0.2 0.7
index fetch by key 582,804 162.2 734.9
index scans kdiixs1 328,534 91.5 414.3
leaf node 90-10 splits 190 0.1 0.2
leaf node splits 353 0.1 0.5
logons cumulative 426 0.1 0.5
messages received 5,699 1.6 7.2
messages sent 5,699 1.6 7.2
no buffer to keep pinned count 0 0.0 0.0
no work - consistent read gets 4,088,134 1,137.9 5,155.3
opened cursors cumulative 46,867 13.1 59.1
parse count (failures) 27 0.0 0.0
parse count (hard) 4,933 1.4 6.2
parse count (total) 51,443 14.3 64.9
parse time cpu 1,748 0.5 2.2
parse time elapsed 8,012 2.2 10.1
physical read IO requests 390,490 108.7 492.4
physical reads 2,028,713 564.7 2,558.3
physical reads cache 1,793,229 499.2 2,261.3
physical reads cache prefetch 1,557,452 433.5 1,964.0
physical reads direct 235,484 65.6 297.0
physical reads direct (lob) 36 0.0 0.1
physical reads direct temporary 235,426 65.5 296.9
physical reads prefetch warmup 6,031 1.7 7.6
physical write IO requests 15,092 4.2 19.0
physical writes 196,287 54.6 247.5
physical writes direct 179,731 50.0 226.7
physical writes direct (lob) 39 0.0 0.1
physical writes direct temporary 179,664 50.0 226.6
physical writes from cache 16,556 4.6 20.9
physical writes non checkpoint 194,791 54.2 245.6
pinned buffers inspected 2 0.0 0.0
prefetch warmup blocks aged out 1,292 0.4 1.6
prefetched blocks aged out befor 293,795 81.8 370.5
process last non-idle time 1,954 0.5 2.5
recursive calls 1,997,982 556.1 2,519.5
recursive cpu usage 50,834 14.2 64.1
redo blocks written 224,755 62.6 283.4
redo buffer allocation retries 3 0.0 0.0
redo entries 357,063 99.4 450.3
redo log space requests 3 0.0 0.0
redo log space wait time 123 0.0 0.2
redo ordering marks 5,391 1.5 6.8
redo size 109,558,292 30,495.9 138,156.7
redo synch time 398 0.1 0.5
redo synch writes 300 0.1 0.4
redo wastage 1,486,252 413.7 1,874.2
redo write time 1,657 0.5 2.1
redo writer latching time 7 0.0 0.0
redo writes 5,499 1.5 6.9
rollback changes - undo records 5,688 1.6 7.2
rows fetched via callback 96,659 26.9 121.9
session connect time 0 0.0 0.0
session logical reads 6,234,873 1,735.5 7,862.4
Instance Activity Stats DB/Inst: xxxx/xxxx Snaps: 16598-16599
Statistic Total per Second per Trans
session pga memory 162,220,520 45,154.5 204,565.6
session pga memory max 341,641,032 95,096.7 430,821.0
session uga memory 790,286,168,264 219,978,374.3 #############
session uga memory max 267,584,080 74,482.8 337,432.6
shared hash latch upgrades - no 327,865 91.3 413.5
shared hash latch upgrades - wai 47 0.0 0.1
sorts (disk) 44 0.0 0.1
sorts (memory) 20,909 5.8 26.4
sorts (rows) 124,334,820 34,609.0 156,790.4
summed dirty queue length 10,849 3.0 13.7
switch current to new buffer 125 0.0 0.2
table fetch by rowid 362,785 101.0 457.5
table fetch continued row 1,811 0.5 2.3
table scan blocks gotten 2,989,662 832.2 3,770.1
table scan rows gotten 102,945,486 28,655.2 129,817.8
table scans (long tables) 65 0.0 0.1
table scans (short tables) 8,082 2.3 10.2
transaction rollbacks 72 0.0 0.1
undo change vector size 40,524,316 11,280.1 51,102.5
user I/O wait time 140,959 39.2 177.8
user calls 7,168 2.0 9.0
user commits 654 0.2 0.8
user rollbacks 139 0.0 0.2
workarea executions - onepass 30 0.0 0.0
workarea executions - optimal 13,486 3.8 17.0
write clones created in foregrou 6 0.0 0.0
-------------------------------------------------------------contd on next ...
Edited by: LazyDBA10g on Jul 8, 2009 4:50 AMInstance Activity Stats - Absolute Values DB/Inst: xxxx/xxxx Snaps: 1
-> Statistics with absolute values (should not be diffed)
-> Statistics identified by '(derived)' come from sources other than SYSSTAT
Statistic Begin Value End Value
opened cursors current 1,397 3,387
logons current 23 36
Instance Activity Stats - Thread Activity DB/Inst: xxxx/xxxx Snaps: 16
Statistic Total per Hour
log switches (derived) 1 1.00
Tablespace IO Stats DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> ordered by IOs (Reads + Writes) desc
Tablespace
Av Av Av Av Buffer Av Buf
Reads Reads/s Rd(ms) Blks/Rd Writes Writes/s Waits Wt(ms)
TEMP2
153,326 43 0.2 1.6 6,040 2 0 0.0
AA_DATA
115,909 32 5.8 7.6 217 0 0 0.0
AA_WEB
57,358 16 9.1 12.8 2,200 1 0 0.0
AA_INDEX
43,576 12 3.3 3.3 738 0 0 0.0
AA_WEB_IDX
11,475 3 2.9 1.1 6 0 0 0.0
SYSTEM
5,575 2 3.8 1.4 2,528 1 61 16.1
SYSAUX
3,017 1 5.3 1.4 2,401 1 5 0.0
UNDOTBS1
262 0 5.0 1.0 955 0 28 0.0
AA_LOB
36 0 13.6 5.5 3 0 0 0.0
USERS
3 0 33.3 1.0 3 0 0 0.0
EXAMPLE
1 0 40.0 1.0 1 0 0 0.0
File IO Stats DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> ordered by Tablespace, File
Tablespace Filename
Av Av Av Av Buffer Av Buf
Reads Reads/s Rd(ms) Blks/Rd Writes Writes/s Waits Wt(ms)
EXAMPLE /AAA/oradata/xxxx/example01.dbf
1 0 40.0 1.0 1 0 0 0.0
SYSAUX /AAA/oradata/xxxx/sysaux01.dbf
3,017 1 5.3 1.4 2,401 1 5 0.0
SYSTEM /AAA/oradata/xxxx/system01.dbf
5,575 2 3.8 1.4 2,528 1 61 16.1
TEMP2 /AAA/oradata/xxxx/TEMP02.DBFf
153,324 43 0.2 1.6 6,040 2 0
TEMP2 /AAA/oradata/xxxx/TEMP03.DBF
2 0 5.0 1.0 0 0 0
UNDOTBS1 /AAA/oradata/xxxx/undotbs01.dbf
181 0 4.9 1.0 307 0 3 0.0
UNDOTBS1 /AAA/oradata/xxxx/undotbs02.dbf
70 0 5.6 1.0 157 0 20 0.0
UNDOTBS1 /AAA/oradata/xxxx/undotbs021.dbf
11 0 2.7 1.0 491 0 5 0.0
USERS /AAA/oradata/xxxx/users01.dbf
1 0 50.0 1.0 1 0 0 0.0
USERS /AAA/oradata/xxxx/users02.dbf
1 0 30.0 1.0 1 0 0 0.0
USERS /AAA/oradata/xxxx/users03.dbf
1 0 20.0 1.0 1 0 0 0.0
AA_DATA /AAA/oradata/xxxx/AA_DATA01.DBF
28,830 8 5.8 7.6 80 0 0 0.0
AA_DATA /AAA/oradata/xxxx/AA_DATA02.DBF
30,068 8 5.8 7.5 34 0 0 0.0
AA_DATA /AAA/oradata/xxxx/AA_DATA03.DBF
28,669 8 5.8 7.5 56 0 0 0.0
AA_DATA /AAA/oradata/xxxx/AA_DATA04.DBF
28,342 8 5.9 7.7 47 0 0 0.0
AA_INDEX /AAA/oradata/xxxx/AA_INDEX01.DBF
22,286 6 3.1 3.2 439 0 0 0.0
AA_INDEX /AAA/oradata/xxxx/AA_INDEX02.DBF
21,290 6 3.4 3.3 299 0 0 0.0
AA_LOB /AAA/oradata/xxxx/AA_LOB01.DBF
20 0 11.0 5.4 1 0 0 0.0
AA_LOB /AAA/oradata/xxxx/AA_LOB02.DBF
11 0 17.3 5.5 1 0 0 0.0
AA_LOB /AAA/oradata/xxxx/AA_LOB03.DBF
5 0 16.0 6.2 1 0 0 0.0
AA_WEB /AAA/oradata/xxxx/AA_WEB01.DBF
28,640 8 9.2 12.8 1,079 0 0 0.0
AA_WEB /AAA/oradata/xxxx/AA_WEB02.DBF
28,718 8 9.0 12.8 1,121 0 0 0.0
AA_WEB_IDX /AAA/oradata/xxxx/AA_WEB_IDX01.DBF
5,068 1 2.8 1.2 2 0 0 0.0
AA_WEB_IDX /AAA/oradata/xxxx/AA_WEB_IDX02.DBF
6,407 2 2.9 1.1 4 0 0 0.0
Buffer Pool Statistics DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> Standard block size Pools D: default, K: keep, R: recycle
-> Default Pools for other block sizes: 2k, 4k, 8k, 16k, 32k
Free Writ Buffer
Number of Pool Buffer Physical Physical Buff Comp Busy
P Buffers Hit% Gets Reads Writes Wait Wait Waits
D 190,848 71 6,220,953 1,793,255 16,556 0 0 94
Instance Recovery Stats DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> B: Begin snapshot, E: End snapshot
Targt Estd Log File Log Ckpt Log Ckpt
MTTR MTTR Recovery Actual Target Size Timeout Interval
(s) (s) Estd IOs Redo Blks Redo Blks Redo Blks Redo Blks Redo Blks
B 0 8 155 955 5359 360000 5359
E 0 9 311 1177 4572 360000 4572
Buffer Pool Advisory DB/Inst: xxxx/xxxx Snap: 16599
-> Only rows with estimated physical reads >0 are displayed
-> ordered by Block Size, Buffers For Estimate
Size for Size Buffers for Est Physical Estimated
P Estimate (M) Factr Estimate Read Factor Physical Reads
D 144 .1 17,892 1.97 3,571,363
D 288 .2 35,784 1.62 2,936,281
D 432 .3 53,676 1.57 2,850,391
D 576 .4 71,568 1.44 2,616,052
D 720 .5 89,460 1.33 2,414,217
D 864 .6 107,352 1.15 2,091,986
D 1,008 .7 125,244 1.04 1,882,876
D 1,152 .8 143,136 1.02 1,857,287
D 1,296 .8 161,028 1.02 1,844,981
D 1,440 .9 178,920 1.01 1,830,107
D 1,536 1.0 190,848 1.00 1,816,003
D 1,584 1.0 196,812 0.98 1,785,023
D 1,728 1.1 214,704 0.93 1,688,213
D 1,872 1.2 232,596 0.89 1,613,261
D 2,016 1.3 250,488 0.88 1,594,176
D 2,160 1.4 268,380 0.87 1,584,933
D 2,304 1.5 286,272 0.87 1,582,965
D 2,448 1.6 304,164 0.86 1,569,802
D 2,592 1.7 322,056 0.86 1,569,169
D 2,736 1.8 339,948 0.86 1,568,758
D 2,880 1.9 357,840 0.86 1,568,194
PGA Aggr Summary DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> PGA cache hit % - percentage of W/A (WorkArea) data processed only in-memory
PGA Cache Hit % W/A MB Processed Extra W/A MB Read/Written
88.0 4,058 552
PGA Aggr Target Stats DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> B: Begin snap E: End snap (rows dentified with B or E contain data
which is absolute i.e. not diffed over the interval)
-> Auto PGA Target - actual workarea memory target
-> W/A PGA Used - amount of memory used for all Workareas (manual + auto)
-> %PGA W/A Mem - percentage of PGA memory allocated to workareas
-> %Auto W/A Mem - percentage of workarea memory controlled by Auto Mem Mgmt
-> %Man W/A Mem - percentage of workarea memory under manual control
%PGA %Auto %Man
PGA Aggr Auto PGA PGA Mem W/A PGA W/A W/A W/A Global Mem
Target(M) Target(M) Alloc(M) Used(M) Mem Mem Mem Bound(K)
B 500 432 57.5 0.0 .0 .0 .0 25,600
E 500 428 70.2 0.0 .0 .0 .0 25,600
PGA Aggr Target Histogram DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> Optimal Executions are purely in-memory operations
Low High
Optimal Optimal Total Execs Optimal Execs 1-Pass Execs M-Pass Execs
2K 4K 11,726 11,726 0 0
64K 128K 256 256 0 0
128K 256K 206 206 0 0
256K 512K 583 583 0 0
512K 1024K 363 363 0 0
1M 2M 124 124 0 0
2M 4M 107 107 0 0
4M 8M 66 64 2 0
8M 16M 49 35 14 0
16M 32M 52 39 13 0
32M 64M 3 2 1 0
64M 128M 4 4 0 0
128M 256M 2 2 0 0
PGA Memory Advisory DB/Inst: xxxx/xxxx Snap: 16599
-> When using Auto Memory Mgmt, minimally choose a pga_aggregate_target value
where Estd PGA Overalloc Count is 0
Estd Extra Estd PGA Estd PGA
PGA Target Size W/A MB W/A MB Read/ Cache Overalloc
Est (MB) Factr Processed Written to Disk Hit % Count
63 0.1 4,098.7 2,609.3 61.0 0
125 0.3 4,098.7 1,521.6 73.0 0
250 0.5 4,098.7 1,354.7 75.0 0
375 0.8 4,098.7 1,109.3 79.0 0
500 1.0 4,098.7 373.4 92.0 0
600 1.2 4,098.7 71.6 98.0 0
700 1.4 4,098.7 41.6 99.0 0
800 1.6 4,098.7 41.6 99.0 0
900 1.8 4,098.7 0.0 100.0 0
1,000 2.0 4,098.7 0.0 100.0 0
1,500 3.0 4,098.7 0.0 100.0 0
2,000 4.0 4,098.7 0.0 100.0 0
3,000 6.0 4,098.7 0.0 100.0 0
4,000 8.0 4,098.7 0.0 100.0 0
Shared Pool Advisory DB/Inst: xxxx/xxxx Snap: 16599
-> SP: Shared Pool Est LC: Estimated Library Cache Factr: Factor
-> Note there is often a 1:Many correlation between a single logical object
in the Library Cache, and the physical number of memory objects associated
with it. Therefore comparing the number of Lib Cache objects (e.g. in
v$librarycache), with the number of Lib Cache Memory Objects is invalid.
Est LC Est LC Est LC Est LC
Shared SP Est LC Time Time Load Load Est LC
Pool Size Size Est LC Saved Saved Time Time Mem
Size(M) Factr (M) Mem Obj (s) Factr (s) Factr Obj Hits
224 .2 130 9,174 380 1.0 91 1.0 408,867
352 .3 171 12,647 381 1.0 90 1.0 409,226
480 .4 171 12,647 381 1.0 90 1.0 409,226
608 .5 171 12,647 381 1.0 90 1.0 409,226
736 .6 171 12,647 381 1.0 90 1.0 409,226
864 .7 171 12,647 381 1.0 90 1.0 409,226
992 .8 171 12,647 381 1.0 90 1.0 409,226
1,120 .9 171 12,647 381 1.0 90 1.0 409,226
1,248 1.0 171 12,647 381 1.0 90 1.0 409,226
1,376 1.1 171 12,647 381 1.0 90 1.0 409,226
1,504 1.2 171 12,647 381 1.0 90 1.0 409,226
1,632 1.3 171 12,647 381 1.0 90 1.0 409,226
1,760 1.4 171 12,647 381 1.0 90 1.0 409,226
1,888 1.5 171 12,647 381 1.0 90 1.0 409,226
2,016 1.6 171 12,647 381 1.0 90 1.0 409,226
2,144 1.7 171 12,647 381 1.0 90 1.0 409,226
2,272 1.8 171 12,647 381 1.0 90 1.0 409,226
2,400 1.9 171 12,647 381 1.0 90 1.0 409,226
2,528 2.0 171 12,647 381 1.0 90 1.0 409,226
Java Pool Advisory DB/Inst: xxxx/xxxx Snap: 16599
Est LC Est LC Est LC Est LC
Java JP Est LC Time Time Load Load Est LC
Pool Size Size Est LC Saved Saved Time Time Mem
Size(M) Factr (M) Mem Obj (s) Factr (s) Factr Obj Hits
32 .1 6 142 2 1.0 23 1.0 142
64 .3 6 142 2 1.0 23 1.0 142
96 .4 6 142 2 1.0 23 1.0 142
128 .5 6 142 2 1.0 23 1.0 142
160 .6 6 142 2 1.0 23 1.0 142
192 .8 6 142 2 1.0 23 1.0 142
224 .9 6 142 2 1.0 23 1.0 142
256 1.0 6 142 2 1.0 23 1.0 142
288 1.1 6 142 2 1.0 23 1.0 142
320 1.3 6 142 2 1.0 23 1.0 142
352 1.4 6 142 2 1.0 23 1.0 142
384 1.5 6 142 2 1.0 23 1.0 142
416 1.6 6 142 2 1.0 23 1.0 142
448 1.8 6 142 2 1.0 23 1.0 142
480 1.9 6 142 2 1.0 23 1.0 142
512 2.0 6 142 2 1.0 23 1.0 142
Buffer Wait Statistics DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> ordered by wait time desc, waits desc
Class Waits Total Wait Time (s) Avg Time (ms)
data block 66 1 15
undo block 25 0 0
undo header 3 0 0
Enqueue Activity DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> Enqueue stats gathered prior to 10i should not be compared with 10i data
-> ordered by Wait Time desc, Waits desc
Enqueue Type (Request Reason)
Requests Succ Gets Failed Gets Waits Wt Time (s) Av Wt Time(ms)
TX-Transaction (index contention)
1 1 0 1 0 22.00
Undo Segment Summary DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> Undo segment block stats:
-> uS - unexpired Stolen, uR - unexpired Released, uU - unexpired reUsed
-> eS - expired Stolen, eR - expired Released, eU - expired reUsed
Undo Undo Num Max Qry Max Tx Snap OutOf uS/uR/uU/
TS# Blocks Trans Len (s) Concurcy TooOld Space eS/eR/eU
1 5,497 6,716 2,708 4 0 0 0/0/0/0/0/0
Undo Segment Stats DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> ordered by Time desc
Undo Num Max Qry Max Tx Snap OutOf uS/uR/uU/
End Time Blocks Trans Len (s) Concy TooOld Space eS/eR/eU
07-Jul 17:24 26 161 2,708 1 0 0 0/0/0/0/0/0
07-Jul 17:14 27 143 2,108 2 0 0 0/0/0/0/0/0
07-Jul 17:04 27 226 1,508 1 0 0 0/0/0/0/0/0
07-Jul 16:54 1,565 1,734 204 4 0 0 0/0/0/0/0/0
07-Jul 16:44 2,985 3,078 145 4 0 0 0/0/0/0/0/0
07-Jul 16:34 867 1,374 0 4 0 0 0/0/0/0/0/0
Latch Activity DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> "Get Requests", "Pct Get Miss" and "Avg Slps/Miss" are statistics for
willing-to-wait latch get requests
-> "NoWait Requests", "Pct NoWait Miss" are for no-wait latch get requests
-> "Pct Misses" for both should be very close to 0.0
Pct Avg Wait Pct
Get Get Slps Time NoWait NoWait
Latch Name Requests Miss /Miss (s) Requests Miss
Consistent RBA 5,501 0.0 0 0
FOB s.o list latch 523 0.0 0 0
In memory undo latch 4,267 0.1 1.0 0 728 1.2
JOX SGA heap latch 22 0.0 0 0
JS queue state obj latch 25,992 0.0 0 0
JS slv state obj latch 338 0.0 0 0
KTF sga enqueue 8 0.0 0 1,092 0.0
KWQMN job cache list lat 12 0.0 0 0
KWQP Prop Status 415 0.0 0 0
MQL Tracking Latch 0 0 72 0.0
Memory Management Latch 18,075 0.0 0 1,207 0.0
PL/SQL warning settings 1,607 0.0 0 0
SQL memory manager latch 1 0.0 0 1,206 0.0
SQL memory manager worka 127,457 0.0 0.0 0 0
SWRF Alerted Metric Elem 13,029 0.0 0 0
Shared B-Tree 2,523 0.0 0 0
active checkpoint queue 1,560 0.0 0 0
active service list 6,791 0.0 0 0
archive control 8 0.0 0 0
begin backup scn array 40 0.0 0 0
cache buffer handles 4,560 0.0 0 0
cache buffers chains 14,704,024 0.0 0.2 1 3,447,993 0.0
cache buffers lru chain 62,381 0.3 0.4 2 3,121,799 0.4
channel handle pool latc 759 0.0 0 0
channel operations paren 14,505 0.0 0 0
checkpoint queue latch 67,923 0.0 0 16,481 0.0
child cursor hash table 36,508 0.0 0 0
client/application info 16 0.0 0 0
compile environment latc 1,063 0.0 0 0
cursor bind value captur 125 0.0 0 384 1.0
dictionary lookup 107 0.0 0 0
dml lock allocation 52,017 0.1 0.0 0 0
dummy allocation 839 0.4 0.0 0 0
enqueue hash chains 186,347 0.0 0.1 0 0
enqueues 122,225 0.0 0.0 0 0
event group latch 230 0.0 0 0
file cache latch 153 0.0 0 0
global KZLD latch for me 110 0.0 0 0
hash table column usage 512 0.0 0 138,833 0.0
hash table modification 125 0.0 0 0
internal temp table obje 3 0.0 0 0
job workq parent latch 0 0 388 0.0
job_queue_processes para 172 0.0 0 0
ksuosstats global area 243 0.0 0 0
ktm global data 175 0.0 0 0
kwqbsn:qsga 2,523 0.0 0 0
lgwr LWN SCN 6,225 0.0 0 0
library cache 1,069,757 0.1 0.3 5 2,857 227.5
library cache load lock 10,002 0.0 0 0
library cache lock 277,733 0.0 0.0 0 0
library cache lock alloc 4,092 0.0 0 0
library cache pin 776,264 0.0 0.0 0 0
library cache pin alloca 4,018 0.0 0 0
list of block allocation 1,044 0.0 0 0
loader state object free 460 0.0 0 0
longop free list parent 1,357 0.0 0 19,547 0.0
message pool operations 334 0.0 0 0
messages 37,979 0.0 0.9 0 0
mostly latch-free SCN 6,237 0.0 0.0 0 0
multiblock read objects 351,202 0.0 0.0 0 0
Latch Activity DB/Inst: xxxx/xxxx Snaps: 16598-16599
-> "Get Requests", "Pct Get Miss" and "Avg Slps/Miss" are statistics for
willing-to-wait latch get requests
-> "NoWait Requests", "Pct NoWait Miss" are for no-wait latch get requestscontd..............
Edited by: LazyDBA10g on Jul 8, 2009 4:51 AM -
Hi: I'm analyzing this STATSPACK report: it is "volume test" on our UAT server, so most input is from 'bind variables'. Our shared pool is well utilized in oracle. Oracle redo logs is not appropriately configured on this server, as in 'Top 5 wait events' there are 2 for redos.
I need to know what else information can be dig-out from 'foreground wait events' & 'background wait events', and what can assist us to better understanding, in combination of 'Top 5 wait event's, that how the server/test went? it could be overwelming No. of wait events, so appreciate any helpful diagnostic or analysis. Database is oracle 11.2.0.4 upgraded from 11.2.0.3, on IBM AIX power system 64bit, level 6.x
STATSPACK report for
Database DB Id Instance Inst Num Startup Time Release RAC
~~~~~~~~ ----------- ------------ -------- --------------- ----------- ---
700000XXX XXX 1 22-Apr-15 12:12 11.2.0.4.0 NO
Host Name Platform CPUs Cores Sockets Memory (G)
~~~~ ---------------- ---------------------- ----- ----- ------- ------------
dXXXX_XXX AIX-Based Systems (64- 2 1 0 16.0
Snapshot Snap Id Snap Time Sessions Curs/Sess Comment
~~~~~~~~ ---------- ------------------ -------- --------- ------------------
Begin Snap: 5635 22-Apr-15 13:00:02 114 4.6
End Snap: 5636 22-Apr-15 14:00:01 128 8.8
Elapsed: 59.98 (mins) Av Act Sess: 0.6
DB time: 35.98 (mins) DB CPU: 19.43 (mins)
Cache Sizes Begin End
~~~~~~~~~~~ ---------- ----------
Buffer Cache: 2,064M Std Block Size: 8K
Shared Pool: 3,072M Log Buffer: 13,632K
Load Profile Per Second Per Transaction Per Exec Per Call
~~~~~~~~~~~~ ------------------ ----------------- ----------- -----------
DB time(s): 0.6 0.0 0.00 0.00
DB CPU(s): 0.3 0.0 0.00 0.00
Redo size: 458,720.6 8,755.7
Logical reads: 12,874.2 245.7
Block changes: 1,356.4 25.9
Physical reads: 6.6 0.1
Physical writes: 61.8 1.2
User calls: 2,033.7 38.8
Parses: 286.5 5.5
Hard parses: 0.5 0.0
W/A MB processed: 1.7 0.0
Logons: 1.2 0.0
Executes: 801.1 15.3
Rollbacks: 6.1 0.1
Transactions: 52.4
Instance Efficiency Indicators
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 100.00 Redo NoWait %: 100.00
Buffer Hit %: 99.98 Optimal W/A Exec %: 100.00
Library Hit %: 99.77 Soft Parse %: 99.82
Execute to Parse %: 64.24 Latch Hit %: 99.98
Parse CPU to Parse Elapsd %: 53.15 % Non-Parse CPU: 98.03
Shared Pool Statistics Begin End
Memory Usage %: 10.50 12.79
% SQL with executions>1: 69.98 78.37
% Memory for SQL w/exec>1: 70.22 81.96
Top 5 Timed Events Avg %Total
~~~~~~~~~~~~~~~~~~ wait Call
Event Waits Time (s) (ms) Time
CPU time 847 50.2
enq: TX - row lock contention 4,480 434 97 25.8
log file sync 284,169 185 1 11.0
log file parallel write 299,537 164 1 9.7
log file sequential read 698 16 24 1.0
Host CPU (CPUs: 2 Cores: 1 Sockets: 0)
~~~~~~~~ Load Average
Begin End User System Idle WIO WCPU
1.16 1.84 19.28 14.51 66.21 1.20 82.01
Instance CPU
~~~~~~~~~~~~ % Time (seconds)
Host: Total time (s): 7,193.8
Host: Busy CPU time (s): 2,430.7
% of time Host is Busy: 33.8
Instance: Total CPU time (s): 1,203.1
% of Busy CPU used for Instance: 49.5
Instance: Total Database time (s): 2,426.4
%DB time waiting for CPU (Resource Mgr): 0.0
Memory Statistics Begin End
~~~~~~~~~~~~~~~~~ ------------ ------------
Host Mem (MB): 16,384.0 16,384.0
SGA use (MB): 7,136.0 7,136.0
PGA use (MB): 282.5 361.4
% Host Mem used for SGA+PGA: 45.3 45.8
Foreground Wait Events DB/Inst: XXXXXs Snaps: 5635-5636
-> Only events with Total Wait Time (s) >= .001 are shown
-> ordered by Total Wait Time desc, Waits desc (idle events last)
Avg %Total
%Tim Total Wait wait Waits Call
Event Waits out Time (s) (ms) /txn Time
enq: TX - row lock contentio 4,480 0 434 97 0.0 25.8
log file sync 284,167 0 185 1 1.5 11.0
Disk file operations I/O 8,741 0 4 0 0.0 .2
direct path write 13,247 0 3 0 0.1 .2
db file sequential read 6,058 0 1 0 0.0 .1
buffer busy waits 1,800 0 1 1 0.0 .1
SQL*Net more data to client 29,161 0 1 0 0.2 .1
direct path read 7,696 0 1 0 0.0 .0
db file scattered read 316 0 1 2 0.0 .0
latch: shared pool 144 0 0 2 0.0 .0
CSS initialization 30 0 0 3 0.0 .0
cursor: pin S 10 0 0 9 0.0 .0
row cache lock 41 0 0 2 0.0 .0
latch: row cache objects 19 0 0 3 0.0 .0
log file switch (private str 8 0 0 7 0.0 .0
library cache: mutex X 28 0 0 2 0.0 .0
latch: cache buffers chains 54 0 0 1 0.0 .0
latch free 290 0 0 0 0.0 .0
control file sequential read 1,568 0 0 0 0.0 .0
log file switch (checkpoint 4 0 0 6 0.0 .0
direct path sync 8 0 0 3 0.0 .0
latch: redo allocation 60 0 0 0 0.0 .0
SQL*Net break/reset to clien 34 0 0 1 0.0 .0
latch: enqueue hash chains 45 0 0 0 0.0 .0
latch: cache buffers lru cha 7 0 0 2 0.0 .0
latch: session allocation 5 0 0 1 0.0 .0
latch: object queue header o 6 0 0 1 0.0 .0
ASM file metadata operation 30 0 0 0 0.0 .0
latch: In memory undo latch 15 0 0 0 0.0 .0
latch: undo global data 8 0 0 0 0.0 .0
SQL*Net message from client 6,362,536 0 278,225 44 33.7
jobq slave wait 7,270 100 3,635 500 0.0
SQL*Net more data from clien 7,976 0 15 2 0.0
SQL*Net message to client 6,362,544 0 8 0 33.7
Background Wait Events DB/Inst: XXXXXs Snaps: 5635-5636
-> Only events with Total Wait Time (s) >= .001 are shown
-> ordered by Total Wait Time desc, Waits desc (idle events last)
Avg %Total
%Tim Total Wait wait Waits Call
Event Waits out Time (s) (ms) /txn Time
log file parallel write 299,537 0 164 1 1.6 9.7
log file sequential read 698 0 16 24 0.0 1.0
db file parallel write 9,556 0 13 1 0.1 .8
os thread startup 146 0 10 70 0.0 .6
control file parallel write 2,037 0 2 1 0.0 .1
Log archive I/O 35 0 1 30 0.0 .1
LGWR wait for redo copy 2,447 0 0 0 0.0 .0
db file async I/O submit 9,556 0 0 0 0.1 .0
db file sequential read 145 0 0 2 0.0 .0
Disk file operations I/O 349 0 0 0 0.0 .0
db file scattered read 30 0 0 4 0.0 .0
control file sequential read 5,837 0 0 0 0.0 .0
ADR block file read 19 0 0 4 0.0 .0
ADR block file write 5 0 0 15 0.0 .0
direct path write 14 0 0 2 0.0 .0
direct path read 3 0 0 7 0.0 .0
latch: shared pool 3 0 0 6 0.0 .0
log file single write 56 0 0 0 0.0 .0
latch: redo allocation 53 0 0 0 0.0 .0
latch: active service list 1 0 0 3 0.0 .0
latch free 11 0 0 0 0.0 .0
rdbms ipc message 314,523 5 57,189 182 1.7
Space Manager: slave idle wa 4,086 88 18,996 4649 0.0
DIAG idle wait 7,185 100 7,186 1000 0.0
Streams AQ: waiting for time 2 50 4,909 ###### 0.0
Streams AQ: qmn slave idle w 129 0 3,612 28002 0.0
Streams AQ: qmn coordinator 258 50 3,612 14001 0.0
smon timer 43 2 3,605 83839 0.0
pmon timer 1,199 99 3,596 2999 0.0
SQL*Net message from client 17,019 0 31 2 0.1
SQL*Net message to client 12,762 0 0 0 0.1
class slave wait 28 0 0 0 0.0
thank you very much!Hi: just know it now: it is a large amount of 'concurrent transaction' designed in this "Volume Test" - to simulate large incoming transaction volme, so I guess wait in eq:TX - row is expected.
The fact: (1) redo logs at uat server is known to not well-tune for configurations (2) volume test slow 5%, however data amount in its test is kept the same by each time import production data, by the team. So why it slowed 5% this year?
The wait histogram is pasted below, any one interest to take a look? any ideas?
Wait Event Histogram DB/Inst: XXXX/XXXX Snaps: 5635-5636
-> Total Waits - units: K is 1000, M is 1000000, G is 1000000000
-> % of Waits - column heading: <=1s is truly <1024ms, >1s is truly >=1024ms
-> % of Waits - value: .0 indicates value was <.05%, null is truly 0
-> Ordered by Event (idle events last)
Total ----------------- % of Waits ------------------
Event Waits <1ms <2ms <4ms <8ms <16ms <32ms <=1s >1s
ADR block file read 19 26.3 5.3 10.5 57.9
ADR block file write 5 40.0 60.0
ADR file lock 6 100.0
ARCH wait for archivelog l 14 100.0
ASM file metadata operatio 30 100.0
CSS initialization 30 100.0
Disk file operations I/O 9090 97.2 1.4 .6 .4 .2 .1 .1
LGWR wait for redo copy 2447 98.5 .5 .4 .2 .2 .2 .1
Log archive I/O 35 40.0 8.6 25.7 2.9 22.9
SQL*Net break/reset to cli 34 85.3 8.8 5.9
SQL*Net more data to clien 29K 99.9 .0 .0 .0 .0 .0
buffer busy waits 1800 96.8 .7 .7 .6 .3 .4 .5
control file parallel writ 2037 90.7 5.0 2.1 .8 1.0 .3 .1
control file sequential re 7405 100.0 .0
cursor: pin S 10 10.0 90.0
db file async I/O submit 9556 99.9 .0 .0 .0
db file parallel read 1 100.0
db file parallel write 9556 62.0 32.4 1.7 .8 1.5 1.3 .1
db file scattered read 345 72.8 3.8 2.3 11.6 9.0 .6
db file sequential read 6199 97.2 .2 .3 1.6 .7 .0 .0
direct path read 7699 99.1 .4 .2 .1 .1 .0
direct path sync 8 25.0 37.5 12.5 25.0
direct path write 13K 97.8 .9 .5 .4 .3 .1 .0
enq: TX - row lock content 4480 .4 .7 1.3 3.0 6.8 12.3 75.4 .1
latch free 301 98.3 .3 .7 .7
latch: In memory undo latc 15 93.3 6.7
latch: active service list 1 100.0
latch: cache buffers chain 55 94.5 3.6 1.8
latch: cache buffers lru c 9 88.9 11.1
latch: call allocation 6 100.0
latch: checkpoint queue la 3 100.0
latch: enqueue hash chains 45 97.8 2.2
latch: messages 4 100.0
latch: object queue header 7 85.7 14.3
latch: redo allocation 113 97.3 1.8 .9
latch: row cache objects 19 89.5 5.3 5.3
latch: session allocation 5 80.0 20.0
latch: shared pool 147 90.5 1.4 2.7 1.4 .7 1.4 2.0
latch: undo global data 8 100.0
library cache: mutex X 28 89.3 3.6 3.6 3.6
log file parallel write 299K 95.6 2.6 1.0 .4 .3 .2 .0
log file sequential read 698 29.5 .1 4.6 46.8 18.9
log file single write 56 100.0
log file switch (checkpoin 4 25.0 50.0 25.0
log file switch (private s 8 12.5 37.5 50.0
log file sync 284K 93.3 3.7 1.4 .7 .5 .3 .1
os thread startup 146 100.0
row cache lock 41 85.4 9.8 2.4 2.4
DIAG idle wait 7184 100.0
SQL*Net message from clien 6379K 86.6 5.1 2.9 1.3 .7 .3 2.8 .3
SQL*Net message to client 6375K 100.0 .0 .0 .0 .0 .0 .0
Wait Event Histogram DB/Inst: XXXX/xxxx Snaps: 5635-5636
-> Total Waits - units: K is 1000, M is 1000000, G is 1000000000
-> % of Waits - column heading: <=1s is truly <1024ms, >1s is truly >=1024ms
-> % of Waits - value: .0 indicates value was <.05%, null is truly 0
-> Ordered by Event (idle events last)
Total ----------------- % of Waits ------------------
Event Waits <1ms <2ms <4ms <8ms <16ms <32ms <=1s >1s
SQL*Net more data from cli 7976 99.7 .1 .1 .0 .1
Space Manager: slave idle 4086 .1 .2 .0 .0 .3 3.2 96.1
Streams AQ: qmn coordinato 258 49.2 .8 50.0
Streams AQ: qmn slave idle 129 100.0
Streams AQ: waiting for ti 2 50.0 50.0
class slave wait 28 92.9 3.6 3.6
jobq slave wait 7270 .0 100.0
pmon timer 1199 100.0
rdbms ipc message 314K 10.3 7.3 39.7 15.4 10.6 5.3 8.2 3.3
smon timer 43 100.0 -
Hi,
I´m new with tuning and i have a little problem, i read a lot of blogs and articles about awr and stackspack. Here is part of my awr report.
Server – DELL 2850 – Windows 2003 SP2 x86 – 4GB RAM (/3GB) 2CPU.
Snap Id Snap Time Sessions Curs/Sess
Begin Snap: 11592 20-May-09 09:00:49 110 50.3
End Snap: 11761 27-May-09 10:01:00 115 45.3
Elapsed: 10,140.18 (mins)
DB Time: 19,151.07 (mins)
Cache Sizes
~~~~~~~~~~~ Begin End
Buffer Cache: 316M 316M Std Block Size: 8K
Shared Pool Size: 576M 576M Log Buffer: 6,924K
Load Profile
~~~~~~~~~~~~ Per Second Per Transaction
Redo size: 196,591.16 6,808.93
Logical reads: 68,060.52 2,357.27
Block changes: 1,664.88 57.66
Physical reads: 157.76 5.46
Physical writes: 34.21 1.18
User calls: 1,689.77 58.53
Parses: 675.63 23.40
Hard parses: 2.86 0.10
Sorts: 7,059.70 244.51
Logons: 2.41 0.08
Executes: 2,377.07 82.33
Transactions: 28.87
% Blocks changed per Read: 2.45 Recursive Call %: 74.45
Rollback per transaction %: 76.03 Rows per Sort: 0.73
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 99.99 Redo NoWait %: 100.00
Buffer Hit %: 99.77 In-memory Sort %: 100.00
Library Hit %: 102.97 Soft Parse %: 99.58
Execute to Parse %: 71.58 Latch Hit %: 99.93
Parse CPU to Parse Elapsd %: 78.73 % Non-Parse CPU: 98.55
Shared Pool Statistics Begin End
Memory Usage %: 47.32 47.64
% SQL with executions>1: 58.04 69.45
% Memory for SQL w/exec>1: 68.71 76.32
Top 5 Timed Events Avg %Total
~~~~~~~~~~~~~~~~~~ wait Call
Event Waits Time (s) (ms) Time Wait Class
CPU time 873,110 76.0
log file sync 5,161,812 76,211 15 6.6 Commit
enq: UL – contention 243,039 54,470 224 4.7 Applicatio
db file sequential read 12,534,382 41,279 3 3.6 User I/O
log file parallel write 8,215,709 25,760 3 2.2 System I/O
I see that CPU time is very high and the other wait events not are very significant.
My Database reports Rollback per transaction %age to 76%.
Statistic Total per Second per Trans
user commits 4,210,155 6.9 0.2
user rollbacks 13,356,226 22.0 0.8
Transacciones = user commits + user rollbacks
Transacciones = 4.210.155 + 13.356.226 = 17.566.381
Rollbacks por transacción = (100*13.356.226/17.566.381)= 76,03%
I review this other statistics.
Statistic Total per Second per Trans
db block changes 1,012,928,251 1,664.9 57.7
rollback changes – undo records 177,118,776 291.1 10.1
In the section on sql statistics i don´t see any query with delete statement or something that is producing the rollback.
For the other hand, i saw high values for latches:
Latch Activity
Pct Avg Wait Pct
Get Get Slps Time NoWait NoWait
Latch Name Requests Miss /Miss (s) Requests Miss
cache buffer handles 594,141,662 0.0 0.0 0 0 N/A
cache buffers chains ############## 0.0 0.0 24 256,952,500 0.0
cache buffers lru chain 57,432,611 0.1 0.0 0 407,926,828 0.0
cache table scan latch 0 N/A N/A 0 7,211,848 0.0
channel handle pool latc 248,878 0.0 0.0 0 0 N/A
channel operations paren 4,191,138 0.0 0.0 0 0 N/A
checkpoint queue latch 93,701,454 0.0 0.0 0 18,705,338 0.0
client/application info 74,841,233 0.0 0.0 0 0 N/A
In memory undo latch 319,086,961 0.2 0.0 3 48,465,421 0.1
row cache objects 2,204,749,411 0.1 0.0 0 630,441 0.0
lgwr LWN SCN 8,230,336 0.0 0.0 0 0 N/A
library cache 2,606,820,844 0.2 0.0 1106 8,043,804 0.4
library cache load lock 841,281 0.0 0.0 0 74 0.0
library cache lock 611,525,102 0.1 0.0 0 205 0.0
library cache lock alloc 32,549,163 0.0 0.0 0 0 N/A
library cache pin 1,349,787,907 0.1 0.0 1 4,386 0.0
library cache pin alloca 2,617,831 0.0 0.0 0 0 N/A
Latch Name
Get Requests Misses Sleeps Spin Gets Sleep1 Sleep2 Sleep3
cache buffers chains
############## 22,397,249 127,771 ########## 0 0 0
session allocation
-953,498,830 5,328,052 341 5,327,714 0 0 0
library cache
2,606,820,844 5,076,626 82,635 4,995,862 0 0 0
simulator lru latch
-3,426,351,079 4,816,176 244 4,815,941 0 0 0
row cache objects
2,204,749,411 2,659,953 25 2,659,928 0 0 0
library cache pin
1,349,787,907 1,566,144 2,726 1,563,447 0 0 0
library cache lock
611,525,102 801,491 75 801,416 0 0 0
In memory undo latch
319,086,961 724,884 5,850 719,534 0 0 0
enqueues
256,944,623 546,555 1,748 544,980 0 0 0
shared pool
190,887,687 515,397 78,393 439,711 0 0 0
session idle bit
2,097,791,961 512,800 2,111 510,722 0 0 0
enqueue hash chains
325,688,224 316,885 2,067 314,956 0 0 0
undo global data
395,144,808 249,509 395 249,136 0 0 0
dml lock allocation
82,685,629 38,906 213 38,738 0 0 0
Latch Miss Sources
NoWait Waiter
Latch Name Where Misses Sleeps Sleeps
cache buffers chains kcbchg: kslbegin: bufs not 0 124,497 72,893
cache buffers chains kcbgtcr: fast path 0 84,073 73,823
cache buffers chains kcbgtcr: kslbegin excl 0 69,785 47,848
cache buffers chains kcbzwb 0 47,844 28,553
cache buffers chains kcbgcur: kslbegin 0 46,897 10,928
cache buffers chains kcbrls: kslbegin 0 11,584 58,227
cache buffers chains kcbchg: kslbegin: call CR 0 5,786 50,971
cache buffers chains kcbget: pin buffer 0 3,802 691
cache buffers chains kcb_is_private 0 2,362 42,467
cache buffers chains kcbbxsv 0 1,421 79
cache buffers chains kcbnlc 0 1,197 5,431
library cache kglpnp: child 0 25,131 56,619
library cache kglpndl: child: after proc 0 8,800 216
library cache kglhdgn: child: 0 7,515 16,401
library cache kglLockCursor 0 3,962 1,328
library cache kglpndl: child: before pro 0 990 5,918
library cache kglic 0 750 28
shared pool kghasp 0 54,200 40
shared pool kghupr1 0 13,535 56,783
shared pool kghalo 0 6,161 12,243
shared pool kghfre 0 3,081 8,630
shared pool kgh_next_free 0 887 9
I´m a bit lost… i need to look for hot blocks, sql statments that are consuming a lot of cpu, set pct_free of hot_blocks to a high value¿?
Edited by: Roberto Marotta on Jun 22, 2009 3:45 AMWell,
DELL -2850 4GB RAM 2CPU
I´ll try to explain better. Sorry for my explains and my english because my english is not very well.
This environment had serious memory problems some time ago. Sometimes database hangs because memory problems. We resolve the problem with /3GB setting in the Windows OS.
Now we are doing a study "tuning" of the database server looking for gain performance.
I find that the redo size is not the optimal size. Actual = 50M Recommended= 6GB.
Statistic l
log switches (derived) Tota 2,682 per Hour 15.87
OPTIMAL_LOGFILE_SIZE
6008
In one week the server had processed 17M of transactions.
Statistic Total per Second per Trans
user commits 4,210,155 6.9 0.2
user rollbacks 13,356,226 22.0 0.8
Transacciones = user commits + user rollbacks
Transacciones = 4.210.155 + 13.356.226 = 17.566.381
Rollbacks por transacción = (100*13.356.226/17.566.381)= 76,03%
Statistic Total per Second per Trans
db block changes 1,012,928,251 1,664.9 57.7
rollback changes - undo records 177,118,776 291.1 10.1
I think that is a problem with the logic of application but i don´t find anything like delete statements or something that alerts me doing much rollback.
For the other hand i detect high values for some latches "cache buffer chains", "library cache", "row objects cache".
More things:
METRIC_NAME
Database Wait Time Ratio value 24.3862681
Database CPU Time Ratio value 75.6137319
METRIC_NAME MINIMUN MAXIMUN AVERAGE
CPU Usage Per Sec 0 158.290545 109.032138
CPU Usage Per Txn 0 6.15517349 3.72228913
Database CPU Time Ratio 0 88.7685616 77.766078
Database Wait Time Ratio 0 88.8858063 22.233922
Executions Per Sec 0 5624.66667 2633.58251
Executions Per Txn 0 218.716785 90.4001077
Response Time Per Txn (secs) 0 .31 .05
SQL Service Response Time (secs) 0 0 0
User Transaction Per Sec 0 53.1166667 29.6726776
STAT_NAME PCT_TIME
sql execute elapsed time 33.84
DB time 32
DB CPU 7670898.16 26.44
PL/SQL execution elapsed time 1202699.05 4.15
background elapsed time 560082.574 1.93
parse time elapsed 227501.434 .78
hard parse elapsed time 87775.528 .3
PL/SQL compilation elapsed time 53801.08 .19
background cpu time 47749.065 .16
failed parse elapsed time 37235.995 .13
hard parse (sharing criteria) elapsed time 5800.741 .02
inbound PL/SQL rpc elapsed time 3930.999 .01
RMAN cpu time (backup/restore) 3828.488 .01
connection management call elapsed time 3332.64 .01
sequence load elapsed time 2438.323 .01
hard parse (bind mismatch) elapsed time 1337.938 0
repeated bind elapsed time 510.387 0
Java execution elapsed time 18.669 0
failed parse (out of shared memory) elapsed time 0 0
I think that the server expend much time executing sql statements...
Best Regards,
Edited by: Roberto Marotta on Jun 22, 2009 5:20 AM
Edited by: Roberto Marotta on Jun 22, 2009 5:20 AM
Edited by: Roberto Marotta on Jun 22, 2009 5:22 AM
Edited by: Roberto Marotta on Jun 22, 2009 5:23 AM
Edited by: Roberto Marotta on Jun 22, 2009 5:25 AM
Edited by: Roberto Marotta on Jun 22, 2009 5:25 AM -
Performance crippled with audit_trail=db in 12.1.0.2 CDB/PDB
Performance tanked as soon as I set audit_trail=db, and all I see in EM Express is buffer busy waits. Tracked it to object sys.aud$ with 100% of buffer busy waits. I have been using Oracle auditing for years and never see this type of impact. Anyone else see this?
Oracle 12.1.0.2 on 64-bit Oracle Linux 6.5 with kernel 3.8.13-44.el6uek.x86_64.
Created container database using DBCA with one pluggable database.
Ran benchmarks to baseline performance. Very good.
set audit_trail=db, bounced the database, logged into the PDB and enabled audit on select, insert, update, delete on all my application tables.
Transactions per minute dropped 95% and write I/O throughput dropped 75%.
I collected AWR reports with and without audit_trail set. These are shown below.
Each benchmark is 5 minutes with 2 minute ramp-up time, and 40 users no key/think time.
BEFORE SETTING AUDIT_TRAIL (IT IS UNSET). Buffer Busy Waits is only 1.2 seconds total.
Top 10 Foreground Events by Total Wait Time
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Total Wait Wait % DB Wait
Event Waits Time (sec) Avg(ms) time Class
log file sync 2,500,409 6224.2 2.49 54.9 Commit
DB CPU 5166.3 45.6
enq: TX - row lock contention 16,155 14.3 0.88 .1 Applicat
library cache: mutex X 83,598 13.6 0.16 .1 Concurre
db file sequential read 87,145 10.4 0.12 .1 User I/O
SQL*Net message to client 2,739,811 8.3 0.00 .1 Network
cursor: pin S 3,631 3.9 1.07 .0 Concurre
latch: In memory undo latch 86,392 2.9 0.03 .0 Concurre
buffer busy waits 45,740 1.2 0.03 .0 Concurre
cursor: mutex X 1,004 .9 0.94 .0 Concurre
NOW RE-RUN SAME BENCHMARK WITH AUDIT_TRAIL = DB. Buffer Busy Waits over 8000 seconds!
Top 10 Foreground Events by Total Wait Time
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Total Wait Wait % DB Wait
Event Waits Time (sec) Avg(ms) time Class
buffer busy waits 12,024,693 8002.1 0.67 68.1 Concurre
DB CPU 3253.5 27.7
log file sync 151,536 255.6 1.69 2.2 Commit
enq: TX - row lock contention 5,549 199.6 35.98 1.7 Applicat
enq: TX - contention 959 110.3 114.98 .9 Other
enq: HW - contention 177,020 95.9 0.54 .8 Configur
Data file init write 2,232 1.9 0.84 .0 User I/O
db file scattered read 19,037 1.7 0.09 .0 User I/O
db file sequential read 19,363 1.4 0.07 .0 User I/O
library cache: mutex X 36,060 1.2 0.03 .0 Concurre
Buffer Wait Statistics DB/Inst: NORM/NORM Snaps: 60-61
-> ordered by wait time desc, waits desc
Class Waits Total Wait Time (s) Avg Time (ms)
data block 14,204,039 7,922 1
segment header 1,288,059 22 0
undo header 286,303 2 0
1st level bmb 1 0 0
Segments by Buffer Busy Waits DB/Inst: NORM/NORM Snaps: 60-61
-> % of Capture shows % of Buffer Busy Waits for each top segment compared
-> with total Buffer Busy Waits for all segments captured by the Snapshot
-> When ** MISSING ** occurs, some of the object attributes may not be available
Tablespace
Owner Name
Buffer
Subobject Obj. Busy % of
Object Name Name Type Obj# Dataobj# Waits Capture
SYS SYSTEM
AUD$ TABLE 499 499 15,496,081 100.00Hi,
Happened to me that parameter values of a workspace were defaulting to the values in <configdir>/defaults.xml instead of the ones in the <workspace>,xml.
When you setup a database (e.g..java -jar ords.war setup --database mydb), you will have mydb.xml, mydb_al.xml and mydb_rt.xml under the <configdir>/ords created for APEX_PUBLIC_USER, APEX_LISTENER and APEX_REST_PUBLIC_USER, respectively. When a config entry is not present in mydb_al.xml or mydb_rt.xml, one would expect that it would be read from mydb.xml. However, that is not what happens. It reads from defaults.xml under the configdir.
That is the case for db connection parameters as well.
So, inspect all three xmls and make sure entries with
key="db.hostname"
key="db.password"
key="db.port"
key="db.servicename"
exist in all three xmls.
P.S. That should be the case for other parameters as well, but haven't verified.
Ege -
Can you please provide me the suggestion on how to reduce the number of buffer busy waits for the below query?
Please find the query where the buffer busy waits is taking 11091 and 13160 seconds.
INSERT INTO RPM_CLEARANCE (CLEARANCE_ID, CLEARANCE_DISPLAY_ID, STATE,
REASON_CODE, CLEARANCE_RESET_ID, RESET_IND, ITEM, ZONE_ID, LOCATION,
ZONE_NODE_TYPE, EFFECTIVE_DATE, OUT_OF_STOCK_DATE, RESET_DATE, CHANGE_TYPE,
CHANGE_AMOUNT, CHANGE_PERCENT, CHANGE_CURRENCY, VENDOR_FUNDED_IND,
CREATE_DATE, CREATE_ID, APPROVAL_DATE, APPROVAL_ID, TSL_EVENT_REF,
TSL_MARKDOWN_REF, TSL_EVENT_PHASE, TSL_COVER_GROUP, TSL_END_DATE,
TSL_EVENT_POS_IND, TSL_EVENT_SEL_IND, TSL_HOPOS_TEMPLATE_ID )
VALUES
(:B23 , 'reset:'||:B22 , :B21 , :B20 , NULL, '1', :B19 , :B18 , :B17 , :B16 ,
:B15 , :B15 - 1, NULL, :B14 , :B13 , :B12 , :B11 , '0', :B10 , :B9 , :B10 ,
:B9 , :B8 , :B7 , :B6 , :B5 , :B4 , :B3 , :B2 , :B1 )
call count cpu elapsed disk query current rows
Parse 1849 0.06 0.05 0 0 0 0
Execute 1895091 2539.06 2606.23 32 119694 31084693 1895091
Fetch 0 0.00 0.00 0 0 0 0
total 1896940 2539.12 2606.28 32 119694 31084693 1895091
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 202 (recursive depth: 1)
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
db file sequential read 32 0.01 0.22
buffer busy waits 11091 0.02 0.29
latch: cache buffers chains 30 0.00 0.00
enq: TX - index contention 563 0.01 0.11
log file switch completion 15 0.06 0.42
latch: In memory undo latch 7 0.00 0.00
buffer deadlock 88 0.00 0.00
cursor: pin S 59 0.00 0.00
cursor: pin S wait on X 1 0.00 0.00
INSERT INTO RPM_CLEARANCE (CLEARANCE_ID, CLEARANCE_DISPLAY_ID, STATE,
REASON_CODE, CLEARANCE_RESET_ID, RESET_IND, ITEM, ZONE_ID, LOCATION,
ZONE_NODE_TYPE, EFFECTIVE_DATE, OUT_OF_STOCK_DATE, RESET_DATE, CHANGE_TYPE,
CHANGE_AMOUNT, CHANGE_PERCENT, CHANGE_CURRENCY, VENDOR_FUNDED_IND,
CREATE_DATE, CREATE_ID, APPROVAL_DATE, APPROVAL_ID, TSL_EVENT_REF,
TSL_MARKDOWN_REF, TSL_EVENT_PHASE, TSL_COVER_GROUP, TSL_END_DATE,
TSL_EVENT_POS_IND, TSL_EVENT_SEL_IND, TSL_HOPOS_TEMPLATE_ID )
VALUES
(:B23 , 'reset:'||:B22 , :B21 , :B20 , NULL, '1', :B19 , :B18 , :B17 , :B16 ,
:B15 , :B15 - 1, NULL, :B14 , :B13 , :B12 , :B11 , '0', :B10 , :B9 , :B10 ,
:B9 , :B8 , :B7 , :B6 , :B5 , :B4 , :B3 , :B2 , :B1 )
call count cpu elapsed disk query current rows
Parse 575 0.02 0.01 0 0 0 0
Execute 1066687 1460.30 1478.77 0 121065 17556349 1066687
Fetch 0 0.00 0.00 0 0 0 0
total 1067262 1460.32 1478.79 0 121065 17556349 1066687
Misses in library cache during parse: 0
Optimizer mode: ALL_ROWS
Parsing user id: 202 (recursive depth: 1)
Elapsed times include waiting on following events:
Event waited on Times Max. Wait Total Waited
---------------------------------------- Waited ---------- ------------
latch: cache buffers chains 28 0.01 0.01
buffer busy waits 13160 0.07 0.46
enq: TX - index contention 522 0.00 0.09
buffer deadlock 108 0.00 0.00
latch: In memory undo latch 17 0.00 0.00
cursor: pin S 8 0.00 0.00
log file switch completion 2 0.05 0.07
cursor: pin S wait on X 1 0.00 0.00
********************************************************************************For reducing buffer busy waits you need to increase DB_CACHE_SIZE parameter value.
Try the query below
14:40:23 SQL> select name,size_for_estimate,size_factor,estd_physical_reads,buffers_for_estimate fro
m v$db_cache_advice order by 4;
NAME SIZE_FOR_ESTIMATE SIZE_FACTOR ESTD_PHYSICAL_READS BUFFERS_FOR_ESTIMATE
DEFAULT 960 1.875 252983 119760
DEFAULT 912 1.7813 268597 113772
DEFAULT 864 1.6875 269415 107784
DEFAULT 816 1.5938 269673 101796
DEFAULT 768 1.5 270449 95808
DEFAULT 720 1.4063 270923 89820
DEFAULT 672 1.3125 272107 83832
DEFAULT 624 1.2188 276651 77844
DEFAULT 576 1.125 282272 71856
DEFAULT 528 1.0313 308869 65868
DEFAULT 512 1 334346 63872
DEFAULT 480 .9375 411617 59880
DEFAULT 432 .8438 467955 53892
DEFAULT 384 .75 520223 47904
DEFAULT 336 .6563 575829 41916
DEFAULT 288 .5625 628226 35928
DEFAULT 240 .4688 670286 29940
DEFAULT 192 .375 725289 23952
DEFAULT 144 .2813 784512 17964
DEFAULT 96 .1875 921481 11976
DEFAULT 48 .0938 1948144 5988
21 rows selected.You will get a result like above. SIZE_FOR_ESTIMATE column shows values in MB.
Then from the result, choose a size for the buffer cache in which there is minimal physical reads but according to the avaliability of your physical memory and set it. -
Slow query performance in Oracle 10.2.0.3
Hi,
We have Oracle 10.2.0.3 installed on RHEL 5(64 bit).We have two queries out of which one is a query using select while other query is using a insert.First we executed insert query which inserts 10000 rows in a table and then select query on this table.This works fine in one thread.But when we do samething in 10 threads, at that time INSERT is fine but select is taking very long time for 10 threads.Any bug related to parallel execution of queries for SELECT in 10.2.0.3?Any suggestion??
Thanks in advance.
Regards,
RJ.Justin,
We have a same queries for INSERT and Select in 10 manual sessions outof which select query is taking more time to execute.Please refer to WAITs given below.No there is no bottleneck as far as hardware is concerned because we tested it on different configuration of servers.
Event Waits Time(s) Avg Wait(ms) % Total Call Time Wait Class
CPU time 52 93.2
latch: cache buffers chains 45,542 6 0 10.7 Concurrency
log file parallel write 2,107 3 1 5.2 System I/O
log file sync 805 2 2 3.5 Commit
latch: session allocation 5,116 1 0 2.6 Other Wait Events
• s - second
• cs - centisecond - 100th of a second
• ms - millisecond - 1000th of a second
• us - microsecond - 1000000th of a second
• ordered by wait time desc, waits desc (idle events last)
Event Waits %Time-outs Total Wait Time (s) Avg wait (ms) Waits /txn
latch: cache buffers chains 45,542 0.00 6 0 22.99
log file parallel write 2,107 0.00 3 1 1.06
log file sync 805 0.00 2 2 0.41
latch: session allocation 5,116 0.00 1 0 2.58
buffer busy waits 20,482 0.00 1 0 10.34
db file sequential read 157 0.00 1 4 0.08
control file parallel write 1,330 0.00 0 0 0.67
wait list latch free 39 0.00 0 10 0.02
enq: TX - index contention 632 0.00 0 0 0.32
latch free 996 0.00 0 0 0.50
SQL*Net break/reset to client 1,738 0.00 0 0 0.88
SQL*Net message to client 108,947 0.00 0 0 55.00
os thread startup 2 0.00 0 19 0.00
cursor: pin S wait on X 3 100.00 0 11 0.00
latch: In memory undo latch 136 0.00 0 0 0.07
log file switch completion 4 0.00 0 7 0.00
latch: shared pool 119 0.00 0 0 0.06
latch: undo global data 121 0.00 0 0 0.06
buffer deadlock 238 99.58 0 0 0.12
control file sequential read 1,735 0.00 0 0 0.88
SQL*Net more data to client 506 0.00 0 0 0.26
log file single write 2 0.00 0 2 0.00
SQL*Net more data from client 269 0.00 0 0 0.14
reliable message 12 0.00 0 0 0.01
LGWR wait for redo copy 26 0.00 0 0 0.01
rdbms ipc reply 6 0.00 0 0 0.00
latch: library cache 7 0.00 0 0 0.00
latch: redo allocation 2 0.00 0 0 0.00
enq: RO - fast object reuse 2 0.00 0 0 0.00
direct path write 21 0.00 0 0 0.01
cursor: pin S 1 0.00 0 0 0.00
log file sequential read 2 0.00 0 0 0.00
direct path read 8 0.00 0 0 0.00
SQL*Net message from client 108,949 0.00 43,397 398 55.00
jobq slave wait 14,527 49.56 35,159 2420 7.33
Streams AQ: qmn slave idle wait 246 0.00 3,524 14326 0.12
Streams AQ:qmn coordinator-
idle wait 451 45.45 3,524 7814 0.23
wait for unread message on -
broadcast channel 3,597 100.00 3,516 978 1.82
virtual circuit status 120 100.00 3,516 29298 0.06
class slave wait 2 0.00 0 0 0.00 Message was edited by:
RJiv
Message was edited by:
RJiv
Message was edited by:
RJiv
Message was edited by:
RJiv
Message was edited by:
RJiv
Message was edited by:
RJiv
Message was edited by:
RJiv
Message was edited by:
RJiv
Message was edited by:
RJiv -
环境：db：10.2.0.4.0 system：hp-ux 11.31
近期系统在访问高峰时，性能严重下降，分析awr得到信息为
Elapsed: 60.20 (mins)
DB Time: 1,916.95 (mins) 系统负担非常严重
Library Hit %: 99.60 Soft Parse %: 99.44
Execute to Parse %: -22.89 重解析现象很严重
Event Waits Time(s) Avg Wait(ms) % Total Call Time Wait Class
CPU time 26,661 23.2
cursor: pin S 5,346,339 11,727 2 10.2 Other
latch: cache buffers chains 25,963 5,205 200 4.5 Concurrency
db file scattered read 710,601 2,698 4 2.3 User I/O
latch: library cache 6,743 2,087 309 1.8 Concurrenc
cursor: pin S事件为等待时间第一， 一般判读为系统并发sql语句过多，由于没有之前正常状态的awr报告作为对比，所以对于这个系统问题的根源和解决办法不是很清楚，对于应用方面，减少并发sql语句，绑定变量等，在数据库方面调整ession_cached_cursors参数，增加sharepool空间，由于水平有限只能知道这么多，希望得到更加深入的分析。谢谢
附部分awr（如何上传完整报告？）WORKLOAD REPOSITORY report for
DB Name DB Id Instance Inst num Release RAC Host
ORCL 1183953527 orcl 1 10.2.0.4.0 NO HP-UX-1
Snap Id Snap Time Sessions Cursors/Session
Begin Snap: 36825 14-8ÔÂ -12 09:00:16 1426 1.5
End Snap: 36826 14-8ÔÂ -12 10:00:29 1630 1.4
Elapsed: 60.20 (mins)
DB Time: 1,916.95 (mins)
Report Summary
Cache Sizes
Begin End
Buffer Cache: 9,216M 9,216M Std Block Size: 8K
Shared Pool Size: 6,144M 6,144M Log Buffer: 14,348K
Load Profile
Per Second Per Transaction
Redo size: 85,077.91 5,632.74
Logical reads: 323,798.90 21,437.69
Block changes: 489.98 32.44
Physical reads: 4,190.38 277.43
Physical writes: 36.21 2.40
User calls: 7,273.13 481.53
Parses: 1,499.45 99.27
Hard parses: 8.39 0.56
Sorts: 150.73 9.98
Logons: 1.72 0.11
Executes: 1,220.19 80.78
Transactions: 15.10
% Blocks changed per Read: 0.15 Recursive Call %: 9.01
Rollback per transaction %: 12.68 Rows per Sort: 118.78
Instance Efficiency Percentages (Target 100%)
Buffer Nowait %: 99.99 Redo NoWait %: 99.99
Buffer Hit %: 98.71 In-memory Sort %: 100.00
Library Hit %: 99.60 Soft Parse %: 99.44
Execute to Parse %: -22.89 Latch Hit %: 99.95
Parse CPU to Parse Elapsd %: 6.61 % Non-Parse CPU: 94.79
Shared Pool Statistics
Begin End
Memory Usage %: 92.12 92.19
% SQL with executions>1: 90.33 87.07
% Memory for SQL w/exec>1: 90.37 88.32
Top 5 Timed Events
Event Waits Time(s) Avg Wait(ms) % Total Call Time Wait Class
CPU time 26,661 23.2
cursor: pin S 5,346,339 11,727 2 10.2 Other
latch: cache buffers chains 25,963 5,205 200 4.5 Concurrency
db file scattered read 710,601 2,698 4 2.3 User I/O
latch: library cache 6,743 2,087 309 1.8 Concurrency
Time Model Statistics
Total time in database user-calls (DB Time): 115017.1s
Statistics including the word "background" measure background process time, and so do not contribute to the DB time statistic
Ordered by % or DB time desc, Statistic name
Statistic Name Time (s) % of DB Time
sql execute elapsed time 89,472.10 77.79
DB CPU 26,660.94 23.18
parse time elapsed 20,759.09 18.05
PL/SQL execution elapsed time 322.11 0.28
hard parse elapsed time 256.97 0.22
connection management call elapsed time 90.04 0.08
failed parse elapsed time 44.23 0.04
hard parse (sharing criteria) elapsed time 27.70 0.02
sequence load elapsed time 13.43 0.01
PL/SQL compilation elapsed time 10.03 0.01
hard parse (bind mismatch) elapsed time 2.82 0.00
repeated bind elapsed time 0.10 0.00
inbound PL/SQL rpc elapsed time 0.05 0.00
DB time 115,017.09
background elapsed time 451.46
background cpu time 47.64
Back to Wait Events Statistics
Back to Top
Wait Class
s - second
cs - centisecond - 100th of a second
ms - millisecond - 1000th of a second
us - microsecond - 1000000th of a second
ordered by wait time desc, waits desc
Wait Class Waits %Time -outs Total Wait Time (s) Avg wait (ms) Waits /txn
Other 5,359,517 0.06 12,985 2 98.23
Concurrency 41,787 7.97 7,899 189 0.77
User I/O 1,541,553 0.00 4,385 3 28.25
Network 28,263,892 0.00 515 0 518.03
Commit 31,974 1.02 489 15 0.59
Application 7,028 1.04 232 33 0.13
System I/O 41,367 0.00 118 3 0.76
Configuration 48 0.00 8 177 0.00
Back to Wait Events Statistics
Back to Top
Wait Events
s - second
cs - centisecond - 100th of a second
ms - millisecond - 1000th of a second
us - microsecond - 1000000th of a second
ordered by wait time desc, waits desc (idle events last)
Event Waits %Time -outs Total Wait Time (s) Avg wait (ms) Waits /txn
cursor: pin S 5,346,339 0.00 11,727 2 97.99
latch: cache buffers chains 25,963 0.00 5,205 200 0.48
db file scattered read 710,601 0.00 2,698 4 13.02
latch: library cache 6,743 0.00 2,087 309 0.12
db file sequential read 657,512 0.00 1,191 2 12.05
latch free 7,839 0.10 973 124 0.14
read by other session 153,818 0.04 489 3 2.82
log file sync 31,974 1.02 489 15 0.59
SQL*Net more data to client 2,454,333 0.00 308 0 44.98
enq: TX - row lock contention 82 89.02 227 2762 0.00
latch: library cache lock 968 0.00 211 218 0.02
latch: session allocation 1,369 0.00 196 143 0.03
latch: shared pool 1,801 0.00 177 98 0.03
SQL*Net message to client 25,709,776 0.00 130 0 471.22
latch: row cache objects 2,772 0.00 113 41 0.05
log file parallel write 33,654 0.00 105 3 0.62
SQL*Net more data from client 99,783 0.00 77 1 1.83
buffer busy waits 198 24.24 64 325 0.00
latch: cache buffers lru chain 204 0.00 35 173 0.00
cursor: pin S wait on X 3,284 99.97 32 10 0.06
LGWR wait for redo copy 3,493 91.24 32 9 0.06
latch: object queue header operation 91 0.00 8 91 0.00
latch: In memory undo latch 43 0.00 8 191 0.00
db file parallel read 530 0.00 7 14 0.01
enq: SQ - contention 8 0.00 5 670 0.00
log file sequential read 400 0.00 5 13 0.01
SQL*Net break/reset to client 6,942 0.00 5 1 0.13
Streams AQ: qmn coordinator waiting for slave to start 1 100.00 5 4889 0.00
control file parallel write 1,844 0.00 5 2 0.03
latch: enqueue hash chains 55 0.00 4 76 0.00
Log archive I/O 344 0.00 3 9 0.01
wait list latch free 104 0.00 2 20 0.00
latch: undo global data 9 0.00 2 191 0.00
log file switch (checkpoint incomplete) 11 0.00 2 150 0.00
log file switch completion 28 0.00 1 53 0.00
os thread startup 11 0.00 1 132 0.00
control file sequential read 5,093 0.00 0 0 0.09
latch: redo allocation 4 0.00 0 68 0.00
enq: RO - fast object reuse 4 0.00 0 59 0.00
local write wait 50 0.00 0 2 0.00
latch: library cache pin 1 0.00 0 95 0.00
latch: cache buffer handles 1 0.00 0 80 0.00
enq: CF - contention 2 0.00 0 19 0.00
direct path read temp 18,314 0.00 0 0 0.34
log file single write 32 0.00 0 1 0.00
enq: TX - index contention 3 0.00 0 5 0.00
direct path write temp 25 0.00 0 0 0.00
reliable message 4 0.00 0 0 0.00
direct path read 350 0.00 0 0 0.01
Background Wait Events
ordered by wait time desc, waits desc (idle events last)
Event Waits %Time -outs Total Wait Time (s) Avg wait (ms) Waits /txn
events in waitclass Other 2,441 130.93 140 57 0.04
log file parallel write 33,654 0.00 105 3 0.62
log file sequential read 400 0.00 5 13 0.01
control file parallel write 1,844 0.00 5 2 0.03
buffer busy waits 4 75.00 3 832 0.00
Log archive I/O 344 0.00 3 9 0.01
os thread startup 11 0.00 1 132 0.00
latch: library cache 3 0.00 1 220 0.00
control file sequential read 4,390 0.00 0 0 0.08
latch: shared pool 1 0.00 0 309 0.00
db file sequential read 82 0.00 0 4 0.00
db file scattered read 56 0.00 0 4 0.00
log file single write 32 0.00 0 1 0.00
latch: library cache lock 1 0.00 0 26 0.00
direct path read 344 0.00 0 0 0.01
direct path write 343 0.00 0 0 0.01
latch: In memory undo latch 1 0.00 0 0 0.00
Back to Wait Events Statistics
Back to Top
Operating System Statistics
Statistic Total
AVG_BUSY_TIME 355,404
AVG_IDLE_TIME 5,624
AVG_IOWAIT_TIME 1,350
AVG_SYS_TIME 24,626
AVG_USER_TIME 330,677
BUSY_TIME 2,844,143
IDLE_TIME 45,639
IOWAIT_TIME 11,363
SYS_TIME 197,893
USER_TIME 2,646,250
LOAD 8
OS_CPU_WAIT_TIME ###############
RSRC_MGR_CPU_WAIT_TIME 0
VM_IN_BYTES 0
VM_OUT_BYTES 0
PHYSICAL_MEMORY_BYTES 51,504,857,088
NUM_CPUS 8
NUM_CPU_SOCKETS 8
Back to Wait Events Statistics
Back to Top
Service Statistics
ordered by DB Time
Service Name DB Time (s) DB CPU (s) Physical Reads Logical Reads
orcl 108,264.60 24,956.90 12,796,071 1,110,466,840
SYS$USERS 6,748.20 1,707.20 2,350,206 59,196,825
SYS$BACKGROUND 0.00 0.00 1,188 41,361
Back to Wait Events Statistics
Back to Top
Service Wait Class Stats
Wait Class info for services in the Service Statistics section.
Total Waits and Time Waited displayed for the following wait classes: User I/O, Concurrency, Administrative, Network
Time Waited (Wt Time) in centisecond (100th of a second)
Service Name User I/O Total Wts User I/O Wt Time Concurcy Total Wts Concurcy Wt Time Admin Total Wts Admin Wt Time Network Total Wts Network Wt Time
orcl 1354220 373545 40097 757402 0 0 26777629 50042
SYS$USERS 186115 64780 1563 27129 0 0 1456144 1238
SYS$BACKGROUND 1221 183 23 584 0 0 0 0
Back to Wait Events Statistics
Back to Top
SQL ordered by Elapsed Time
Resources reported for PL/SQL code includes the resources used by all SQL statements called by the code.
% Total DB Time is the Elapsed Time of the SQL statement divided into the Total Database Time multiplied by 100
Elapsed Time (s) CPU Time (s) Executions Elap per Exec (s) % Total DB Time SQL Id SQL Module SQL Text
17,352 1,151 282,032 0.06 15.09 58nqcgq93qdpp w3wp.exe SELECT sysdate FROM dual
13,412 3,344 3,516 3.81 11.66 gpz6zsfjvvgx7 obilling.exe select sum ( costs ) , sum ( ...
9,176 2,771 393 23.35 7.98 ajp712h079d57 dosage.exe select DIAG_DESC from outp_mr ...
8,351 2,411 3,163 2.64 7.26 9skkhx9qfmzjy outpdoct.exe SELECT "OUTP_TREAT_REC"."VIS...
6,278 2,042 2,598 2.42 5.46 f9nfgywd1dzbc outpdoct.exe SELECT :"SYS_B_0" del_indica...
3,406 1,070 729 4.67 2.96 3fgaurmna0hx9 obilling.exe SELECT "OUTP_PRESC_T"."VISIT...
3,228 867 9,221 0.35 2.81 3vy04kpknkqgk w3wp.exe select T1.REMIND_DATETIME, T1....
2,802 514 214 13.09 2.44 f4q13jvt6n8r8 mzcx.exe SELECT DISTINCT "OUTPBILL"."...
2,406 533 725 3.32 2.09 87mazvgqfas1z obilling.exe SELECT "OUTP_TREAT_REC_T"."V...
2,340 535 724 3.23 2.03 f4xrxypn2cpkm obilling.exe SELECT "OUTP_PRESC_T"."VISIT...
2,303 781 15,143 0.15 2.00 89yw129xmhchc w3wp.exe select a.PATIENT_ID, a.VISIT_I...
1,572 449 4,748 0.33 1.37 0nwg8cxxzcb0m w3wp.exe select T1.REMIND_DATETIME, T1....
1,258 135 44 28.58 1.09 cnuj5dstf2559 outpdoct.exe SELECT "DOCT_DRUG_PRESC_DE...
Back to SQL Statistics
Back to Top
SQL ordered by CPU Time
Resources reported for PL/SQL code includes the resources used by all SQL statements called by the code.
% Total DB Time is the Elapsed Time of the SQL statement divided into the Total Database Time multiplied by 100
CPU Time (s) Elapsed Time (s) Executions CPU per Exec (s) % Total DB Time SQL Id SQL Module SQL Text
3,344 13,412 3,516 0.95 11.66 gpz6zsfjvvgx7 obilling.exe select sum ( costs ) , sum ( ...
2,771 9,176 393 7.05 7.98 ajp712h079d57 dosage.exe select DIAG_DESC from outp_mr ...
2,411 8,351 3,163 0.76 7.26 9skkhx9qfmzjy outpdoct.exe SELECT "OUTP_TREAT_REC"."VIS...
2,042 6,278 2,598 0.79 5.46 f9nfgywd1dzbc outpdoct.exe SELECT :"SYS_B_0" del_indica...
1,151 17,352 282,032 0.00 15.09 58nqcgq93qdpp w3wp.exe SELECT sysdate FROM dual
1,070 3,406 729 1.47 2.96 3fgaurmna0hx9 obilling.exe SELECT "OUTP_PRESC_T"."VISIT...
867 3,228 9,221 0.09 2.81 3vy04kpknkqgk w3wp.exe select T1.REMIND_DATETIME, T1....
781 2,303 15,143 0.05 2.00 89yw129xmhchc w3wp.exe select a.PATIENT_ID, a.VISIT_I...
540 825 1,790 0.30 0.72 cw74b4gm99xd5 ORACLE.EXE SELECT "A4"."PATIENT_ID", TO_C...
535 2,340 724 0.74 2.03 f4xrxypn2cpkm obilling.exe SELECT "OUTP_PRESC_T"."VISIT...
533 2,406 725 0.73 2.09 87mazvgqfas1z obilling.exe SELECT "OUTP_TREAT_REC_T"."V...
514 2,802 214 2.40 2.44 f4q13jvt6n8r8 mzcx.exe SELECT DISTINCT "OUTPBILL"."...
449 1,572 4,748 0.09 1.37 0nwg8cxxzcb0m w3wp.exe select T1.REMIND_DATETIME, T1....
135 1,258 44 3.06 1.09 cnuj5dstf2559 outpdoct.exe SELECT "DOCT_DRUG_PRESC_DE...
Back to SQL Statistics
Back to Top
SQL ordered by Gets
Resources reported for PL/SQL code includes the resources used by all SQL statements called by the code.
Total Buffer Gets: 1,169,640,302
Captured SQL account for 71.4% of Total
Buffer Gets Executions Gets per Exec %Total CPU Time (s) Elapsed Time (s) SQL Id SQL Module SQL Text
158,325,351 3,516 45,029.96 13.54 3344.37 13412.17 gpz6zsfjvvgx7 obilling.exe select sum ( costs ) , sum ( ...
142,486,001 3,163 45,047.74 12.18 2410.79 8351.24 9skkhx9qfmzjy outpdoct.exe SELECT "OUTP_TREAT_REC"."VIS...
107,954,245 2,598 41,552.83 9.23 2041.61 6278.17 f9nfgywd1dzbc outpdoct.exe SELECT :"SYS_B_0" del_indica...
54,640,906 729 74,953.23 4.67 1069.81 3405.85 3fgaurmna0hx9 obilling.exe SELECT "OUTP_PRESC_T"."VISIT...
54,464,191 15,143 3,596.66 4.66 781.43 2302.60 89yw129xmhchc w3wp.exe select a.PATIENT_ID, a.VISIT_I...
52,300,799 9,221 5,671.92 4.47 866.73 3228.09 3vy04kpknkqgk w3wp.exe select T1.REMIND_DATETIME, T1....
36,350,381 1,790 20,307.48 3.11 539.85 825.10 cw74b4gm99xd5 ORACLE.EXE SELECT "A4"."PATIENT_ID", TO_C...
28,097,571 1,132 24,821.18 2.40 105.62 304.33 44cpsg5hgwtv3 outpdoct.exe SELECT "CLINIC_MASTER"."NAME...
27,329,179 724 37,747.48 2.34 534.54 2339.79 f4xrxypn2cpkm obilling.exe SELECT "OUTP_PRESC_T"."VISIT...
27,276,384 725 37,622.60 2.33 532.84 2405.61 87mazvgqfas1z obilling.exe SELECT "OUTP_TREAT_REC_T"."V...
26,913,555 4,748 5,668.40 2.30 449.02 1571.69 0nwg8cxxzcb0m w3wp.exe select T1.REMIND_DATETIME, T1....
25,335,084 214 118,388.24 2.17 514.25 2802.12 f4q13jvt6n8r8 mzcx.exe SELECT DISTINCT "OUTPBILL"."...
12,756,154 4 3,189,038.50 1.09 73.99 592.57 4v3jxnrj4duq0 ºǫ́ÅäÒ©ÐÂ2012.07.31.exe SELECT "DRUG_PRESC_MASTER"....
Back to SQL Statistics
Back to Top
SQL ordered by Reads
Total Disk Reads: 15,136,657
Captured SQL account for 81.4% of Total
Physical Reads Executions Reads per Exec %Total CPU Time (s) Elapsed Time (s) SQL Id SQL Module SQL Text
6,716,909 214 31,387.43 44.38 514.25 2802.12 f4q13jvt6n8r8 mzcx.exe SELECT DISTINCT "OUTPBILL"."...
3,642,877 44 82,792.66 24.07 134.64 1257.56 cnuj5dstf2559 outpdoct.exe SELECT "DOCT_DRUG_PRESC_DE...
1,707,395 12 142,282.92 11.28 56.42 470.82 bkkm26gd9ydjp prescent.exe SELECT "DRUG_PRESC_MASTER"....
208,221 4 52,055.25 1.38 73.99 592.57 4v3jxnrj4duq0 ºǫ́ÅäÒ©ÐÂ2012.07.31.exe SELECT "DRUG_PRESC_MASTER"....
137,856 0 0.91 383.09 1041.12 b1y7hxw5s572b ORACLE.EXE SELECT /*+ OPAQUE_TRANSFORM */...
45,210 1 45,210.00 0.30 136.24 617.92 9k2mtm738ffbk ORACLE.EXE SELECT "A1"."PATIENT_ID", "A1"...
21,692 0 0.14 44.82 288.67 5w6u29xnk192r ORACLE.EXE SELECT "A1"."TEST_NO", "A1"."I...
2,078 17,010 0.12 0.01 6.78 13.35 3ts97u1my91n4 testprn.exe SELECT "LAB"."LAB_TEST_ITEM...
539 1,732 0.31 0.00 124.85 289.44 0a96nnbzvb78j sjcj.exe select diag_desc , doctor fro...
224 14,499 0.02 0.00 1.75 2.81 adr24vcznhjhz C:\Documents and Settings\yj.ÐÄÄÚʵÑéÊÒ1.000\×À? SELECT COSTS , BILLING_INDICA...
Back to SQL Statistics
Back to Top
SQL ordered by Executions
Total Executions: 4,407,615
Captured SQL account for 43.0% of Total
Executions Rows Processed Rows per Exec CPU per Exec (s) Elap per Exec (s) SQL Id SQL Module SQL Text
324,063 324,042 1.00 0.00 0.00 1jzhjx524wyfm presdisp.exe select TRADE_PRICE , retail_p...
282,032 281,745 1.00 0.00 0.06 58nqcgq93qdpp w3wp.exe SELECT sysdate FROM dual
197,067 197,006 1.00 0.00 0.00 f0wzs9nc663bn obilling.exe select sysdate from dual
162,033 112,966 0.70 0.00 0.00 ak8wcxnbv0mq7 presdisp.exe select location from drug_stoc...
162,032 162,023 1.00 0.00 0.00 g982zswg09n71 presdisp.exe SELECT sum ( DRUG_STOCK.QUANTI...
152,651 1,296 0.01 0.00 0.00 ctc7t080mcrpr PACSVR.exe Select exam_master.*, exam_ma...
89,187 89,186 1.00 0.00 0.00 054n8y7sfgsjc anesmgr.exe select 1 from dual
53,088 24,076 0.45 0.00 0.00 fhzdwv4sgvurz ORACLE.EXE SELECT "A1"."END_DATE_TIME", S...
43,074 991 0.02 0.00 0.00 8kj11spfu1w5k ORACLE.EXE SELECT DISTINCT "A1"."LOG_DATE...
40,962 4,803 0.12 0.00 0.00 664crkjw8n47y doctws.exe select dept_code , ward_code ...
Back to SQL Statistics
Back to Top
SQL ordered by Parse Calls
Total Parse Calls: 5,416,394
Captured SQL account for 41.3% of Total
Parse Calls Executions % Total Parses SQL Id SQL Module SQL Text
457,941 152,651 8.45 ctc7t080mcrpr PACSVR.exe Select exam_master.*, exam_ma...
324,064 324,063 5.98 1jzhjx524wyfm presdisp.exe select TRADE_PRICE , retail_p...
281,992 282,032 5.21 58nqcgq93qdpp w3wp.exe SELECT sysdate FROM dual
197,067 197,067 3.64 f0wzs9nc663bn obilling.exe select sysdate from dual
162,033 162,033 2.99 ak8wcxnbv0mq7 presdisp.exe select location from drug_stoc...
162,032 162,032 2.99 g982zswg09n71 presdisp.exe SELECT sum ( DRUG_STOCK.QUANTI...
113,451 0 2.09 gbztx1wqkp1zw ORACLE.EXE SELECT * FROM "OPERATION_MASTE...
109,344 0 2.02 1gk864rffswjx ORACLE.EXE SELECT * FROM "PAT_VISIT"
104,957 0 1.94 dw9ggd0h86cw4 ORACLE.EXE SELECT * FROM "ADT_LOG"
89,187 89,187 1.65 054n8y7sfgsjc anesmgr.exe select 1 from dual
Back to SQL Statistics
Back to Top
SQL ordered by Sharable Memory
Only Statements with Sharable Memory greater than 1048576 are displayed
Sharable Mem (b) Executions % Total SQL Id SQL Module SQL Text
14,285,976 0.22 998p6b7d1q9bz ** SQL Text Not Available **
14,265,528 0.22 dsxd21s5bw5h3 ** SQL Text Not Available **
4,621,517 45 0.07 18h8s79av5v45 w3wp.exe select T1.REMIND_DATETIME, T1....
3,949,845 20 0.06 bn69cjprha24w w3wp.exe select T1.REMIND_DATETIME, T1....
3,407,101 41 0.05 5syt1sugfkg7c w3wp.exe select T1.REMIND_DATETIME, T1....
2,623,013 65 0.04 gh6391dujc994 w3wp.exe select T1.REMIND_DATETIME, T1....
2,314,741 30 0.04 49husy8txxw6h w3wp.exe select T1.REMIND_DATETIME, T1....
2,184,421 87 0.03 5a77mhab8fmq4 w3wp.exe select T1.REMIND_DATETIME, T1....
2,029,197 24 0.03 57wp7yk0ajprt w3wp.exe select T1.REMIND_DATETIME, T1....
2,028,837 5 0.03 csd4pjvrfpxry w3wp.exe select T1.REMIND_DATETIME, T1....
2,024,581 44 0.03 890zsd9cju097 w3wp.exe select T1.REMIND_DATETIME, T1....
1,925,949 39 0.03 cw4y41z3vnz8y w3wp.exe select T1.REMIND_DATETIME, T1....
1,793,389 71 0.03 gwx893aphkzw8 w3wp.exe select T1.REMIND_DATETIME, T1....
1,747,565 19 0.03 4p0vbj8qba0sj w3wp.exe select T1.REMIND_DATETIME, T1....
1,747,253 75 0.03 6hhka0kpch5bq w3wp.exe select T1.REMIND_DATETIME, T1....
1,746,061 60 0.03 cqbyt6m5m9f6g w3wp.exe select T1.REMIND_DATETIME, T1....
1,745,909 47 0.03 aatwks74mtqkx w3wp.exe select T1.REMIND_DATETIME, T1....
1,718,005 20 0.03 cmws54r2xv332 w3wp.exe select T1.REMIND_DATETIME, T1....
1,709,493 24 0.03 71zxrhv747290 w3wp.exe select T1.REMIND_DATETIME, T1....
1,265,905 1,585 0.02 a7c5z25vb0kvz obilling.exe SELECT COLUMN_NAME, DATA_TYPE...
1,132,605 30 0.02 9s6btksh172dz w3wp.exe select T1.REMIND_DATETIME, T1....
1,115,157 30 0.02 9s6btksh172dz w3wp.exe select T1.REMIND_DATETIME, T1....
1,055,029 105 0.02 da0pcbq6qxxqx w3wp.exe select T1.REMIND_DATETIME, T1....
Back to SQL Statistics
Back to Top
SQL ordered by Version Count
Only Statements with Version Count greater than 20 are displayed
Version Count Executions SQL Id SQL Module SQL Text
698 998p6b7d1q9bz ** SQL Text Not Available **
697 dsxd21s5bw5h3 ** SQL Text Not Available **
57 192 9mrhw217pc809 DOCTWS.EXE select MR_CODE , mr_attr , m...
43 1,307 53mkjqn5tdptj examapt.exe SELECT to_char ( last_updt_dat...
32 125 399071urkdx7n admit.exe SELECT to_char ( last_updt_dat...
26 564 14fz7s749tx24 prescent.exe Select drug_spec , batch_no , ...
Back to SQL Statistics
Back to Top
Complete List of SQL Text
SQL Id SQL Text
054n8y7sfgsjc select 1 from dual
0a96nnbzvb78j select diag_desc , doctor from outp_mr where patient_id =:1 and visit_date like visit_date and visit_no =:2
0nwg8cxxzcb0m select T1.REMIND_DATETIME, T1.START_DATETIME, T1.VISIT_DATE, T1.REMIND_TYPE, T1.REMIND_ID, T1.DELETE_FLAG, T1.REPEAT_INTERVAL, T1.VISIT_ID, T1.VISIT_NO, T1.DELETE_USER_ID, T1.DELETE_USER_NAME, T1.PATIENT_ID, T1.REMIND_DEPICT, T1.REMIND_INDEX, T2.REMIND_TYPE_NAME, T1.REMIND_USER_ID, T1.REMIND_USER_NAME from REMIND T1, REMIND_TYPE_DICT T2 where T1.REMIND_TYPE=T2.REMIND_TYPE_CODE(+) and T1.Remind_Type in (:"SYS_B_0") and T1.Delete_Flag=:"SYS_B_1" and T1.Remind_User_Name=:"SYS_B_2" order by T1.Remind_Id
14fz7s749tx24 Select drug_spec , batch_no , quantity , supply_indicator from drug_stock where drug_code =:1 and firm_id =:2 and package_spec =:3 and package_units =:4 and storage =:5 order by batch_no DESC
18h8s79av5v45
sql--省略
Back to SQL Statistics
Back to Top
SGA breakdown difference
ordered by Pool, Name
N/A value for Begin MB or End MB indicates the size of that Pool/Name was insignificant, or zero in that snapshot
Pool Name Begin MB End MB % Diff
java free memory 26.47 26.47 0.00
java joxlod exec hp 5.34 5.34 0.00
large free memory 32.00 32.00 0.00
shared CCursor 870.37 871.80 0.16
shared Cursor Stats 65.30 65.30 0.00
shared PCursor 506.48 505.60 -0.17
shared db_block_hash_buckets 90.00 90.00 0.00
shared free memory 484.07 480.10 -0.82
shared kglsim object batch 90.30 90.30 0.00
shared library cache 352.64 351.46 -0.33
shared sql area 3,290.12 3,291.57 0.04
streams free memory 16.00 16.00 0.00
buffer_cache 9,216.00 9,216.00 0.00
fixed_sga 1.99 1.99 0.00
log_buffer 14.01 14.01 0.00
Back to Memory Statistics
Back to Top
Resource Limit Stats
only rows with Current or Maximum Utilization > 80% of Limit are shown
ordered by resource name
Resource Name Current Utilization Maximum Utilization Initial Allocation Limit
processes 1,631 1,824 2000 2000
sessions 1,639 1,884 2205 2205
Back to Top
init.ora Parameters
Parameter Name Begin value End value (if different)
audit_file_dest /oracle/product/10.2.0/admin/orcl/adump
background_dump_dest /oracle/product/10.2.0/admin/orcl/bdump
compatible 10.2.0.1.0
control_files /oradata/orcl/control01.ctl, /oradata/orcl/control02.ctl, /oradata/orcl/control03.ctl, /oralog/orcl/control04.ctl
core_dump_dest /oracle/product/10.2.0/admin/orcl/cdump
cursor_sharing FORCE
db_block_size 8192
db_cache_size 9663676416
db_domain
db_file_multiblock_read_count 32
db_name orcl
db_recovery_file_dest /oracle/product/10.2.0/flash_recovery_area
db_recovery_file_dest_size 2147483648
java_pool_size 33554432
job_queue_processes 10
large_pool_size 33554432
log_archive_dest_1 LOCATION=/oralog/arch
nls_language SIMPLIFIED CHINESE
nls_length_semantics CHAR
nls_territory CHINA
open_cursors 300
pga_aggregate_target 2147483648
processes 2000
remote_login_passwordfile EXCLUSIVE
sessions 2205
shared_pool_size 6442450944
streams_pool_size 16777216
undo_management AUTO
undo_tablespace UNDOTBS1
user_dump_dest /oracle/product/10.2.0/admin/orcl/udump
Back to Top
End of Report焦点在于解析：
Parses: 1,499.45 99.27
Hard parses: 8.39 0.56
Execute to Parse %: -22.89每秒软解析1500次 ，Execute to Parse 解析是负值 ， 这说明 执行解析比非常差。
以下SQL parse次数频繁：
SQL ordered by Parse Calls
Total Parse Calls: 5,416,394
Captured SQL account for 41.3% of Total
Parse Calls Executions % Total Parses SQL Id SQL Module SQL Text
457,941 152,651 8.45 ctc7t080mcrpr PACSVR.exe Select exam_master.*, exam_ma...
324,064 324,063 5.98 1jzhjx524wyfm presdisp.exe select TRADE_PRICE , retail_p...SQL ID ctc7t080mcrpr 1jzhjx524wyfm
ctc7t080mcrpr 实际执行只有 152,651 ，解析倒有457,941次
建议分析以上语句为何产生了大量软解析
Advice:
1. 分析SQL语句，减少软解析的数量
2. 利用open cursor、session cached cursors等技术减少软解析
3. 考虑设置_kks_use_mutex_pin=FALSE 禁用10g中的MUTEX PIN CURSOR特性
*<font color="red" size="2" face="courier">如果觉得本回复有意义，请点击本条回复右手边的Correct按钮，谢谢！</font>*
Maclean Liu
Oracle Database Administrator
Oracle Certified 10g/11g Master
www.askmaclean.com
Edited by: Liu Maclean on 2012-8-23 下午11:48 -
Hi All,
I've severe latching problem in my database, when I look in AWR but confused what is causing it.
Can someone guide me on this?
NoWait Waiter
Latch Name Where Misses Sleeps Sleeps
In memory undo latch ktiFlush: child 0 5 0
In memory undo latch kturbk 0 2 2
cache buffers chains kcbchg: kslbegin: bufs not 0 573 69
cache buffers chains kcbgtcr: fast path 0 380 554
cache buffers chains kcbgtcr: kslbegin excl 0 298 547
cache buffers chains kcbrls: kslbegin 0 183 153
cache buffers chains kcbzgb: scan from tail. no 0 83 0
cache buffers chains kcbibr 0 31 40
cache buffers chains kcbchg: kslbegin: call CR 0 10 70
cache buffers chains kcbgcur: kslbegin 0 4 13
cache buffers chains kcbget: pin buffer 0 3 72
cache buffers chains kcbnew: new latch again 0 3 18
cache buffers chains kcbzwb 0 2 3
cache buffers chains kcbbxsv 0 1 3
cache buffers chains kcbcge 0 1 5
cache buffers lru chain kcbzgws 0 45 0
cache buffers lru chain kcbibr 0 43 97
cache buffers lru chain kcbo_link_q 0 20 5
cache buffers lru chain kcbw_quiesce_granule 0 5 0
cache buffers lru chain kcbgtcr:CR Scan:KCBRSKIP 0 1 0
enqueues ksqdel 0 1 0
kks stats kks stats alloc/free 0 1 1
library cache kglobpn: child: 0 2,978 4,471
library cache kgldti: 2child 0 2,417 12
library cache kglLockCursor 0 1,604 3,398
library cache kglpin 0 1,426 538
library cache kglpndl: child: after proc 0 1,185 7
library cache kglhdgn: child: 0 766 1,485
library cache kglpnp: child 0 618 8,902
library cache kglhdgc: child: 0 331 0
library cache kgldte: child 0 0 95 809
library cache kglpndl: child: before pro 0 92 1,800
library cache kglic 0 50 0
library cache kglnti 0 30 0
library cache kglati 0 28 0
library cache kglobld 0 15 21
library cache kglScanDependency 0 7 2
library cache kglukp: child 0 6 5
library cache kglhdbrnl: child 0 1 0
library cache lock kgllkdl: child: no lock ha 0 10,017 217
library cache lock kgllkdl: child: cleanup 0 87 119
library cache lock kgllkal: child: multiinsta 0 80 48
library cache lock alloc kgllkget 0 1 1
library cache pin kglpndl 0 34 6
library cache pin kglpnp: child 0 17 23
library cache pin kglpnal: child: alloc spac 0 13 35
object queue header oper kcbo_switch_cq 0 12 5
object queue header oper kcbw_link_q 0 9 11
object queue header oper kcbo_link_q:reget 0 5 0
object queue header oper kcbw_unlink_q 0 2 10
redo allocation kcrfw_redo_gen: redo alloc 0 13 0
row cache objects kqreqd: reget 0 7 0
row cache objects kqreqd 0 1 0
session allocation ksuprc 0 44 7
session allocation ksudlc 0 24 25
session allocation ksuxds: not user session 0 16 1
session allocation ksucri 0 9 62
session allocation kspallmod 0 2 0
shared pool kghalo 0 2,269 126
shared pool kghupr1 0 690 3,122
Thanks for the help.
Thanks,
Rana.DB Name DB Id Instance Inst Num Release RAC Host
orvprd 3135597156 orvprd 1 10.2.0.3.0 NO ix205
Snap Id Snap Time Sessions Curs/Sess
Begin Snap: 8273 22-Jun-09 03:00:39 132 22.4
End Snap: 8275 22-Jun-09 05:00:42 135 19.3
Elapsed: 120.05 (mins)
DB Time: 565.08 (mins)
Cache Sizes
~~~~~~~~~~~ Begin End
Buffer Cache: 7,392M 7,264M Std Block Size: 8K
Shared Pool Size: 2,768M 2,896M Log Buffer: 14,340K
Load Profile
~~~~~~~~~~~~ Per Second Per Transaction
Redo size: 33,684.43 7,421.03
Logical reads: 133,813.99 29,480.60
Block changes: 4,946.72 1,089.81
Physical reads: 2.37 0.52
Physical writes: 12.92 2.85
User calls: 154.34 34.00
Parses: 438.57 96.62
Hard parses: 1.26 0.28
Sorts: 5,130.10 1,130.21
Logons: 0.07 0.02
Executes: 5,604.35 1,234.70
Transactions: 4.54
% Blocks changed per Read: 3.70 Recursive Call %: 98.52
Rollback per transaction %: 0.18 Rows per Sort: 2.85
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 100.00 Redo NoWait %: 100.00
Buffer Hit %: 100.00 In-memory Sort %: 100.00
Library Hit %: 100.01 Soft Parse %: 99.71
Execute to Parse %: 92.17 Latch Hit %: 99.32
Parse CPU to Parse Elapsd %: 8.09 % Non-Parse CPU: 99.46
Shared Pool Statistics Begin End
Memory Usage %: 84.14 84.89
% SQL with executions>1: 97.57 97.11
% Memory for SQL w/exec>1: 95.66 95.31
Top 5 Timed Events Avg %Total
~~~~~~~~~~~~~~~~~~ wait Call
Event Waits Time (s) (ms) Time Wait Class
CPU time 14,995 44.2
TCP Socket (KGAS) 611,193 6,230 10 18.4 Network
latch: library cache 21,661 4,756 220 14.0 Concurrenc
latch: shared pool 3,333 320 96 0.9 Concurrenc
db file sequential read 17,316 193 11 0.6 User I/O
------------------------------------------------------------- -
Insert Into Vs Insert through a Procedure
Hi All,
I want to make a comparison between insertion into a table through normal insert into staement and through a procedure.
I create a table call test_table with 6 columns and a procedure to insert in that table.
I opened a session that make normal insert for 32 times and another session that uses the procedure to insert for 39 times. My experience says that insertion through a procedure is faster than normal insert into statement. but when i make trace for both sessions here is the results:
Session1(Normal Insert)
INSERT INTO TEST_TABLE
VALUES(:"SYS_B_0", :"SYS_B_1", :"SYS_B_2", :"SYS_B_3", :"SYS_B_4", :"SYS_B_5")
call count cpu elapsed disk query current rows
Parse 32 0.00 0.00 0 0 0 0
Execute 32 0.01 0.02 0 32 129 32
Fetch 0 0.00 0.00 0 0 0 0
total 64 0.01 0.03 0 32 129 32
Misses in library cache during parse: 1
Optimizer mode: CHOOSE
Parsing user id: 125 (CALLCNTR44)
Rows Execution Plan
0 INSERT STATEMENT MODE: CHOOSE
OVERALL TOTALS FOR ALL NON-RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
Parse 32 0.00 0.00 0 0 0 0
Execute 32 0.01 0.02 0 32 129 32
Fetch 0 0.00 0.00 0 0 0 0
total 64 0.01 0.03 0 32 129 32
Misses in library cache during parse: 1
OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
Parse 0 0.00 0.00 0 0 0 0
Execute 0 0.00 0.00 0 0 0 0
Fetch 0 0.00 0.00 0 0 0 0
total 0 0.00 0.00 0 0 0 0
Misses in library cache during parse: 0
32 user SQL statements in session.
0 internal SQL statements in session.
32 SQL statements in session.
1 statement EXPLAINed in this session.
Trace for Session2(Procedure Insert)
BEGIN sec1.INSERT_INTO_TEXT_TABLE (); END;
call count cpu elapsed disk query current rows
Parse 39 0.04 0.00 0 0 0 0
Execute 39 0.00 0.00 0 0 0 39
Fetch 0 0.00 0.00 0 0 0 0
total 78 0.04 0.01 0 0 0 39
Misses in library cache during parse: 1
Optimizer mode: CHOOSE
Parsing user id: 125 (CALLCNTR44)
INSERT INTO TEST_TABLE
VALUES('TEST COL1', 'TEST COL2', 'TEST COL3', 'TEST COL4', 'TEST COL5', 'TEST COL6')
call count cpu elapsed disk query current rows
Parse 0 0.00 0.00 0 0 0 0
Execute 39 0.03 0.00 0 0 80 39
Fetch 0 0.00 0.00 0 0 0 0
total 39 0.03 0.00 0 0 80 39
Misses in library cache during parse: 0
Optimizer mode: CHOOSE
Parsing user id: 474 (SEC1) (recursive depth: 1)
Rows Execution Plan
0 INSERT STATEMENT MODE: CHOOSE
OVERALL TOTALS FOR ALL NON-RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
Parse 117 0.04 0.02 0 0 0 0
Execute 117 0.03 0.03 0 0 0 78
Fetch 39 0.03 0.00 0 312 0 0
total 273 0.10 0.06 0 312 0 78
Misses in library cache during parse: 3
OVERALL TOTALS FOR ALL RECURSIVE STATEMENTS
call count cpu elapsed disk query current rows
Parse 2 0.00 0.00 0 0 0 0
Execute 41 0.04 0.01 0 0 80 39
Fetch 2 0.00 0.00 1 5 0 2
total 45 0.04 0.02 1 5 80 41
Misses in library cache during parse: 2
118 user SQL statements in session.
2 internal SQL statements in session.
120 SQL statements in session.
1 statement EXPLAINed in this session.
So in session 2 parsing of the procedure it self is still done in each execution but for the statment inside it no and in session1 parsing for the insert is done for every execution. So does this proof my knowledge or it is wrong?
I see that instead of parsing the insert in session1 there is parsing for the procedure in session2 is that correct?
Thanks in advanceTomy3k_Bakr, you are doing the comparison wrong. Are you running these from sqlplus over and over again? Sqlplus parses every statement you send, this is not the correct way to compare.
Try this instead.
YAS@10G>create table t (a number,b number,c number);
Table created.
YAS@10G>r
1 create or replace procedure insert_t(pa number,pb number,pc number) as
2 begin
3 insert into t values(pa,pb,pc);
4* end;
Procedure created.Run this and see the results.
exec RUNSTATS_PKG.rs_start;
begin
for i in 1..10000 loop
insert /*+ sql */ into t values(i,i,i);
end loop;
end;
exec RUNSTATS_PKG.rs_middle;
begin
for i in 1..10000 loop
insert_t(i,i,i);
end loop;
end;
exec RUNSTATS_PKG.rs_stop;
Run1 ran in 124 hsecs
Run2 ran in 139 hsecs
run 1 ran in 89.21% of the time
Name Run1 Run2 Diff
LATCH.list of block allocation 1 0 -1
STAT...redo ordering marks 92 91 -1
STAT...table scans (short tabl 3 2 -1
LATCH.session idle bit 27 26 -1
LATCH.In memory undo latch 0 1 1
LATCH.file cache latch 3 2 -1
LATCH.redo allocation 8 7 -1
LATCH.archive process latch 1 0 -1
LATCH.Consistent RBA 2 3 1
LATCH.lgwr LWN SCN 3 2 -1
LATCH.mostly latch-free SCN 3 2 -1
LATCH.KMG MMAN ready and start 1 0 -1
LATCH.compile environment latc 3 2 -1
LATCH.session timer 0 1 1
LATCH.shared pool 2 3 1
STAT...change write time 11 12 1
STAT...table scan blocks gotte 6 4 -2
STAT...messages sent 2 4 2
STAT...data blocks consistent 3 1 -2
LATCH.channel operations paren 8 6 -2
STAT...rollbacks only - consis 3 1 -2
STAT...cleanout - number of kt 27 31 4
STAT...index fetch by key 6 2 -4
STAT...cluster key scans 6 2 -4
STAT...active txn count during 27 31 4
STAT...deferred (CURRENT) bloc 6 2 -4
STAT...consistent changes 20 24 4
STAT...consistent gets - exami 39 35 -4
STAT...session cursor cache hi 11 7 -4
STAT...CR blocks created 6 2 -4
STAT...commit cleanouts succes 6 2 -4
STAT...commit cleanouts 6 2 -4
STAT...workarea memory allocat 5 1 -4
STAT...calls to kcmgcs 27 31 4
STAT...execute count 10,014 10,009 -5
LATCH.active checkpoint queue 5 0 -5
STAT...opened cursors cumulati 14 8 -6
STAT...db block changes 20,324 20,318 -6
LATCH.redo writing 14 8 -6
STAT...parse count (total) 14 8 -6
STAT...CPU used when call star 131 138 7
STAT...calls to kcmgas 101 94 -7
LATCH.undo global data 50 43 -7
STAT...no work - consistent re 15 7 -8
LATCH.dml lock allocation 12 4 -8
STAT...DB time 132 140 8
STAT...cluster key scan block 12 4 -8
LATCH.library cache lock 16 8 -8
STAT...buffer is not pinned co 12 4 -8
LATCH.messages 27 17 -10
STAT...db block gets from cach 10,484 10,473 -11
STAT...db block gets 10,484 10,473 -11
STAT...enqueue releases 24 13 -11
STAT...enqueue requests 24 13 -11
STAT...recursive cpu usage 96 107 11
STAT...Elapsed Time 127 140 13
LATCH.enqueues 35 22 -13
STAT...redo entries 10,181 10,195 14
STAT...CPU used by this sessio 124 138 14
LATCH.library cache pin 20,072 20,056 -16
LATCH.cache buffers lru chain 135 153 18
STAT...table scan rows gotten 54 36 -18
STAT...calls to get snapshot s 37 19 -18
LATCH.library cache 20,094 20,073 -21
LATCH.enqueue hash chains 50 26 -24
STAT...bytes received via SQL* 1,210 1,185 -25
STAT...consistent gets 91 63 -28
STAT...consistent gets from ca 91 63 -28
STAT...free buffer requested 118 152 34
STAT...session logical reads 10,575 10,536 -39
LATCH.row cache objects 153 106 -47
LATCH.checkpoint queue latch 57 0 -57
LATCH.SQL memory manager worka 73 6 -67
LATCH.cache buffer handles 16 84 68
STAT...recursive calls 10,132 10,053 -79
LATCH.object queue header oper 334 437 103
LATCH.cache buffers chains 51,652 51,526 -126
LATCH.session allocation 258 104 -154
STAT...free buffer inspected 448 188 -260
LATCH.simulator lru latch 440 865 425
LATCH.simulator hash latch 458 892 434
STAT...hot buffers moved to he 1,222 276 -946
STAT...undo change vector size 684,064 682,932 -1,132
STAT...redo size 2,586,108 2,583,908 -2,200
Run1 latches total versus runs -- difference and pct
Run1 Run2 Diff Pct
94,017 94,489 472 99.50%For runstats see http://asktom.oracle.com/tkyte/runstats.html. -
Grid Control tuning Advisors for 9i
Hi all,
I'm trying to manage a 9.2.0.1 database with Grid Control 10.2.0.2
Everything is working fine except in the Performance tab, i can't find links for Memory Advisor and Undo Advisor.
This Link below provides a Database Management Matrix and Memory/Undo advisor are listed in 9i version
http://www.oracle.com/technology/products/oem/pdf/em_gc_8i-9i_4.pdf
Any help ?Hi MarGur
I try to help you. The OEM Grid Control in some times not discover the Oracle 9i databases and you must to add manually.
First, check in your target machine that the user owner of agent software have rights of read and write in the ORACLE_HOME directories of Oracle 9i databases.
Go to Grid Control Console
Select Targets ---> Databases
Press Add --> Select the host ebisdb2.oneshield.com and press continue
The automatic discover process begin. When finished is very normal that nor discover the Oracle 9i databases. You press the Add manually button
in the page that appear you must entry all the configuration information of database:
ORACLE_HOME directory
DBSNMP USER
DBSNMP PASSWORD
HOSTNAME
PORT
SID
Check that the dbsnmp user in your database is unlock and press the TEST button to verify the connection work fine.
After this many windows appear of configuration process, and you will put the sys password and host credentials.
If you have problems, tell me
Regards -
Enq: TX - row lock contention wait event
Hi,
I would like to find which DML query has not given COMMIT or ROLLBACK after the execution. Because one of the development database have more table locks and developer reported that their session was hanging. I referred AWR report also and more timed waits occurred in the enq: TX - row lock contention. I need to trace which DML query has not commit or rollback.
Please help me to solve the issue.
Database version: 11.2.0.1.0
Foreground Wait Events
Event
Waits
%Time -outs
Total Wait Time (s)
Avg wait (ms)
Waits /txn
% DB time
enq: TX - row lock contention
320
0
72,047
225147
0.20
99.53
log file sync
547
0
14
26
0.35
0.02
library cache lock
13
0
11
843
0.01
0.02
SQL*Net break/reset to client
1,080
0
2
1
0.69
0.00
SQL*Net message to client
659,006
0
1
0
421.63
0.00
direct path sync
3
0
1
299
0.00
0.00
SQL*Net more data from client
5,541
0
1
0
3.55
0.00
db file scattered read
554
0
0
1
0.35
0.00
SQL*Net more data to client
14,975
0
0
0
9.58
0.00
db file sequential read
2,817
0
0
0
1.80
0.00
ADR block file read
4
0
0
43
0.00
0.00
enq: CR - block range reuse ckpt
2
0
0
71
0.00
0.00
asynch descriptor resize
38,073
100
0
0
24.36
0.00
latch: shared pool
61
0
0
1
0.04
0.00
control file sequential read
6,900
0
0
0
4.41
0.00
Disk file operations I/O
550
0
0
0
0.35
0.00
cursor: pin S
1
0
0
8
0.00
0.00
direct path write temp
34
0
0
0
0.02
0.00
library cache: mutex X
5
0
0
1
0.00
0.00
latch: In memory undo latch
2
0
0
1
0.00
0.00
buffer busy waits
14
0
0
0
0.01
0.00
SQL*Net message from client
658,990
0
294,847
447
421.62
jobq slave wait
669
99
333
497
0.43
PL/SQL lock timer
1
100
1
998
0.00Oracle does not and cannot tell you from historical views (e.g. AWR) which DMLs have not COMMITed or ROLLBACKed. A Transaction ends with a COMMIT or ROLLBACK. The transaction could have a million (or more) DML statements with a million (or more) SELECT statements between the first DML and the COMMIT / ROLLBACK.
Even identifying such DMLs in real time is close to impossible. Because the session holding the lock may have issued a dozen or a million subsequent SQL statements while other sessions are waiting for the lock. You can only identify the session that is the lock holder (the BLOCKING_SESSION in V$SESSION).
If you have tracing enabled for all sessions, then you could review the trace file for the BLOCKING_SESSION to identify the DML(s) the session has executed.
Hemant K Chitale
Maybe you are looking for
-
Can only Reconnect Media one file at a time
I posted this problem almost two months ago, and was told at the time that it was a bug in FCP 6.0 and 6.0.1, but was fixed in 6.0.2. Well, I finally upgraded to 6.0.2, and the problem remains. What is strange, is that after I upgraded, the first two
-
Export Release Build - Problem with Server Settings
Hello, i have a big problem and i searched the whole day yesterday but didnt found an answer... I started a Flex Mobile and PHP Project. The Project has a Data/Services included wich loads some customer from a database (sql)... for the first a used Z
-
NTFS permission problem keep showing when I try to repair the disk permissions
Hi guys, After i install the Paragon NTFS 11.2.443, I found that the serial number I had failed to register it so I uninstall it. Now, I keep getting this when i repair my disk permissions. Repairing permissions for "Macintosh HD"Permissions differ o
-
Does JavaScript do Touch up Text?
Hi, I'm a newbie in JavaScript. I have a requirement to find a string and replace with another string in a pdf file. I can use Touch up Text tool to update the text. However, as I need to do this "find and replace" action number of times, I thought o
-
System.log filling up with enqueueData rtn message
I'm seeing the following log entry in system.log 7-9 times a second: Oct 22 11:00:00 pbair-paulywalnutz-com kernel[0]: ttyioss9000003: enqueueData rtn (e00002d8) I've tried googling and checked discussions here but can't find anything that seems to b