Need guidance on statspack report
Hello Friends, How are you. I hope you all will be fine.I need guidance on statspack report. I do not know how can i resolve wait events. Please help me and give me some time for considering statspack report. If any one willing to do my help its really honour for me. In reply just show me email address and i contact you for you kind consideration.
Thanks in advance
Either post the report here, or send it to me at [email protected], and I'll try to give my 2 cents on it.
Daniel
Similar Messages
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Need suggestion on STATSPACK report
Problem:
Application running Very slow that too not consistent.
i am unable to find out where the problem persists.
I have given necessary details and attached Statspack report with this mail.
Need help very urgently...
Database Info.
Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
PL/SQL Release 9.2.0.1.0 - Production
CORE 9.2.0.1.0 Production
TNS for 32-bit Windows: Version 9.2.0.1.0 - Production
NLSRTL Version 9.2.0.1.0 - Production
System Information:
Item Value
OS Name Microsoft Windows 2000 Advanced Server
Version 5.0.2195 Service Pack 3 Build 2195
OS Manufacturer Microsoft Corporation
System Name NHOUSE
System Manufacturer HP
System Model ProLiant DL380 G3
System Type X86-based PC
Processor x86 Family 15 Model 2 Stepping 7 GenuineIntel ~2384 Mhz
Processor x86 Family 15 Model 2 Stepping 7 GenuineIntel ~2384 Mhz
Windows Directory C:\WINNT
System Directory C:\WINNT\System32
Total Physical Memory 1,572,372 KB
Available Physical Memory 865,600 KB
Total Virtual Memory 5,086,520 KB
Available Virtual Memory 3,755,652 KB
Page File Space 3,514,148 KB
Page File C:\pagefile.sys
Other Info:
Shared Server Mode
No. of Instance Running : 1(ST011)
No. of Application running for this instance : 1 (Softtrack)
Database Type : OLTP (Order Entry System with report generations)
No of users : 2(Object Schema and AccessSchema)
File Placement :
All FIles placed in single disk since lack of disks.
StatsPack report:
STATSPACK report for
DB Name DB Id Instance Inst Num Release Cluster Host
ST011 1063661848 st011 1 9.2.0.1.0 NO NHOUSE
Snap Id Snap Time Sessions Curs/Sess Comment
Begin Snap: 41 07-Aug-03 09:37:30 15 4.3
End Snap: 62 08-Aug-03 04:00:04 15 3.8
Elapsed: 1,102.57 (mins)
Cache Sizes (end)
~~~~~~~~~~~~~~~~~
Buffer Cache: 136M Std Block Size: 8K
Shared Pool Size: 168M Log Buffer: 512K
Load Profile
~~~~~~~~~~~~ Per Second Per Transaction
Redo size: 445.51 1,374.71
Logical reads: 870.05 2,684.69
Block changes: 2.11 6.51
Physical reads: 15.05 46.44
Physical writes: 4.02 12.42
User calls: 16.13 49.78
Parses: 5.49 16.93
Hard parses: 0.89 2.76
Sorts: 1.36 4.21
Logons: 0.00 0.01
Executes: 5.84 18.02
Transactions: 0.32
% Blocks changed per Read: 0.24 Recursive Call %: 57.93
Rollback per transaction %: 50.19 Rows per Sort: 148.29
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 100.00 Redo NoWait %: 100.00
Buffer Hit %: 99.01 In-memory Sort %: 99.59
Library Hit %: 93.31 Soft Parse %: 83.72
Execute to Parse %: 6.04 Latch Hit %: 99.99
Parse CPU to Parse Elapsd %: 97.75 % Non-Parse CPU: 86.83
Shared Pool Statistics Begin End
Memory Usage %: 18.19 92.77
% SQL with executions>1: 47.57 41.10
% Memory for SQL w/exec>1: 44.60 42.30
Top 5 Timed Events
~~~~~~~~~~~~~~~~~~ % Total
Event Waits Time (s) Ela Time
CPU time 1,025 46.80
control file parallel write 21,433 558 25.48
SQL*Net more data to client 495,625 181 8.27
log file parallel write 12,335 102 4.64
log file sync 10,697 89 4.06
Wait Events for DB: ST011 Instance: st011 Snaps: 41 -62
-> 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
control file parallel write 21,433 0 558 26 1.0
SQL*Net more data to client 495,625 0 181 0 23.1
log file parallel write 12,335 12,030 102 8 0.6
log file sync 10,697 1 89 8 0.5
db file scattered read 75,969 0 81 1 3.5
direct path read 210,093 0 66 0 9.8
db file parallel write 2,480 1,240 51 21 0.1
db file sequential read 19,775 0 21 1 0.9
control file sequential read 17,629 0 6 0 0.8
direct path write 774 0 5 7 0.0
enqueue 9 0 2 231 0.0
SQL*Net break/reset to clien 2,552 0 1 1 0.1
log file sequential read 30 0 1 21 0.0
db file single write 32 0 0 11 0.0
switch logfile command 2 0 0 144 0.0
control file single write 5 0 0 29 0.0
log file single write 2 0 0 12 0.0
LGWR wait for redo copy 78 1 0 0 0.0
latch free 7 0 0 0 0.0
async disk IO 13 0 0 0 0.0
buffer busy waits 9 0 0 0 0.0
reliable message 3 0 0 0 0.0
undo segment extension 9 9 0 0 0.0
SQL*Net message from client 1,067,763 0 116,054 109 49.8
virtual circuit status 1,005,679 1,028 68,949 69 46.9
jobq slave wait 786 753 2,403 3057 0.0
SQL*Net more data from clien 5,972 0 4 1 0.3
SQL*Net message to client 1,067,776 0 3 0 49.8
Background Wait Events for DB: ST011 Instance: st011 Snaps: 41 -62
-> ordered by wait time desc, waits desc (idle events last)
Avg
Total Wait wait Waits
Event Waits Timeouts Time (s) (ms) /txn
control file parallel write 21,376 0 556 26 1.0
log file parallel write 12,335 12,030 102 8 0.6
db file parallel write 2,480 1,240 51 21 0.1
control file sequential read 13,975 0 3 0 0.7
db file scattered read 220 0 1 3 0.0
log file sequential read 30 0 1 21 0.0
db file sequential read 231 0 1 2 0.0
direct path write 8 0 0 7 0.0
log file single write 2 0 0 12 0.0
direct path read 8 0 0 3 0.0
LGWR wait for redo copy 78 1 0 0 0.0
log file sync 1 0 0 11 0.0
rdbms ipc reply 42 0 0 0 0.0
async disk IO 13 0 0 0 0.0
buffer busy waits 4 0 0 0 0.0
rdbms ipc message 89,265 77,930 400,950 4492 4.2
smon timer 225 210 67,257 ###### 0.0
SQL ordered by Gets for DB: ST011 Instance: st011 Snaps: 41 -62
-> End Buffer Gets Threshold: 10000
-> Note that resources reported for PL/SQL includes the resources used by
all SQL statements called within the PL/SQL code. As individual SQL
statements are also reported, it is possible and valid for the summed
total % to exceed 100
CPU Elapsd
Buffer Gets Executions Gets per Exec %Total Time (s) Time (s) Hash Value
3,329,463 78 42,685.4 5.8 33.84 40.89 2765271770
select distinct s1.prospectna, s1.praddr1, s1.praddr2, s1.praddr
3, s1.prcity, s1.prstate from (select distinct a.oanno as uoanno
, decode(a.oanno,NUll,b.oandt,a.oandt) as uoandt, ltrim(rtrim(up
per(prospectna))) prospectna, decode(praddr1,null,' ',ltrim(rtri
m(upper(praddr1)))) as praddr1, decode(praddr2,null,' ',ltrim(rt
2,150,915 78 27,575.8 3.7 34.70 231.25 1951422680
select s1.* from (select distinct a.oanno as uoanno, decode(a.oa
nno,Null,b.roanno,a.roanno) as uroanno, decode(a.oanno,NUll,b.oa
ndt,a.oandt) as uoandt, decode(a.oanno,NUll,b.pono,a.pono) as up
ono, decode(a.oanno,Null,b.podt,a.podt) as upodt, decode(a.oanno
,Null,upper(b.npsloffice),upper(a.npsloffice)) as npsl, decode(a
967,504 387 2,500.0 1.7 3.25 3.32 1647834759
select * from (select null table_catalog, ac.owner table_schema,
ac.table_name table_name, acc.column_name column_name, null col
umn_guid, null column_propid, acc.position ordinal, ac.constrain
t_name pk_name from all_constraints ac, all_cons_columns acc whe
re ac.owner=acc.owner and ac.constraint_type='P' and ac.constrai
869,555 24 36,231.5 1.5 11.56 54.15 569094110
select workorderno, workorddt, a.oanno as uoanno, decode(b.oanno
,Null,a.oandt, b.oandt) as uoandt, decode(b.oanno,Null,a.roanno,
b.roanno) as uroanno, decode(b.oanno,Null,a.pono,b.pono) as up
ono,decode(b.oanno,null,a.podt,b.podt) as upodt, decode(b.oanno
,Null,upper(a.npsloffice),upper(b.npsloffice)) as npsl,decode(b.
821,376 24 34,224.0 1.4 8.73 11.09 1011529824
select distinct ltrim(rtrim(upper(prospectna))) prospectna, deco
de(praddr1,null,' ',ltrim(rtrim(upper(praddr1)))) pr1, decode(pr
addr2,null,' ',ltrim(rtrim(upper(praddr2)))) pr2, decode(pradd
r3,null,' ',ltrim(rtrim(upper(praddr3)))) pr3, decode(prcity,nul
l ,' ', ltrim(rtrim(upper(prcity)))) prcity, decode(prstate,nul
774,701 30 25,823.4 1.3 10.50 26.76 2315633148
select a.oanno as uoanno,a.roanno as uroanno,a.oandt as uoandt,
a.pono as upono,a.podt as upodt,upper(a.npsloffice) as npsl,dec
ode(d.delicity,null,'NOT AVAILABLE',UPPER(d.delicity)) as dely,
ltrim(rtrim(upper(prospectna))) prospectna, decode(praddr1,null
,' ',ltrim(rtrim(upper(praddr1)))) as pr1, decode(praddr2,null,'
761,959 30 25,398.6 1.3 7.63 8.27 1655857706
select distinct ltrim(rtrim(upper(prospectna))) prospectna,ltrim
(rtrim(upper(praddr1))) praddr1,ltrim(rtrim(upper(praddr2))) pra
ddr2,ltrim(rtrim(upper(praddr3))) praddr3,ltrim(rtrim(upper(prci
ty))) prcity,ltrim(rtrim(upper(prstate))) prstate from softdb.
oandetails a, softdb.oanudetails b, softdb.enquiryform, softdb.
650,627 21 30,982.2 1.1 6.92 7.12 4059808258
SQL ordered by Gets for DB: ST011 Instance: st011 Snaps: 41 -62
-> End Buffer Gets Threshold: 10000
-> Note that resources reported for PL/SQL includes the resources used by
all SQL statements called within the PL/SQL code. As individual SQL
statements are also reported, it is possible and valid for the summed
total % to exceed 100
CPU Elapsd
Buffer Gets Executions Gets per Exec %Total Time (s) Time (s) Hash Value
Module: SQL*Plus
INSERT into stats$sqltext ( hash_value
, text_subset , piece
, sql_text , address , comman
d_type , last_snap_id )
select st1.hash_value , ss.text_subset
397,508 159 2,500.1 0.7 1.64 1.57 1524142529
select * from (select null table_catalog, ac.owner table_schema,
ac.table_name table_name, acc.column_name column_name, null col
umn_guid, null column_propid, acc.position ordinal, ac.constrain
t_name pk_name from all_constraints ac, all_cons_columns acc whe
re ac.owner=acc.owner and ac.constraint_type='P' and ac.constrai
289,960 144,980 2.0 0.5 10.75 9.52 2091761008
select condition from cdef$ where rowid=:1
287,552 9 31,950.2 0.5 0.00 13.58 2301846564
DECLARE job BINARY_INTEGER := :job; next_date DATE := :mydate;
broken BOOLEAN := FALSE; BEGIN statspack.snap; :mydate := next_d
ate; IF broken THEN :b := 1; ELSE :b := 0; END IF; END;
115,275 169 682.1 0.2 0.81 0.89 1682770808
select * from (select null table_catalog, idx.table_owner table_
schema, idx.table_name table_name, null index_catalog, idx.owner
index_schema, idx.index_name index_name, null primary_key, deco
de(idx.uniqueness, 'UNIQUE', 65535, 0) unique_, decode(idx.index
type, 'CLUSTER', 65535, 0) clustered, null type, null fillfact
95,008 38 2,500.2 0.2 0.39 0.36 3969207777
select * from (select null table_catalog, ac.owner table_schema,
ac.table_name table_name, acc.column_name column_name, null col
umn_guid, null column_propid, acc.position ordinal, ac.constrain
t_name pk_name from all_constraints ac, all_cons_columns acc whe
re ac.owner=acc.owner and ac.constraint_type='P' and ac.constrai
85,527 1 85,527.0 0.1 3.14 4.49 2005338978
BEGIN :RET_VAL := DBMS_METADATA.FETCH_CLOB(:HANDLE);
END;
85,314 1 85,314.0 0.1 3.13 4.30 3633453749
SELECT VALUE(KU$) XMLSCHEMA_T FROM SYS.KU$_XMLSCHEMA_VIEW KU$ WH
ERE KU$.OWNER_NAME='SOFTDB'
55,861 1 55,861.0 0.1 0.66 1.51 2026512687
select s1.* from (select a.oanno as uoanno, decode(a.oanno,NUll,
SQL ordered by Reads for DB: ST011 Instance: st011 Snaps: 41 -62
-> End Disk Reads Threshold: 1000
CPU Elapsd
Physical Reads Executions Reads per Exec %Total Time (s) Time (s) Hash Value
37,620 78 482.3 3.8 34.70 231.25 1951422680
select s1.* from (select distinct a.oanno as uoanno, decode(a.oa
nno,Null,b.roanno,a.roanno) as uroanno, decode(a.oanno,NUll,b.oa
ndt,a.oandt) as uoandt, decode(a.oanno,NUll,b.pono,a.pono) as up
ono, decode(a.oanno,Null,b.podt,a.podt) as upodt, decode(a.oanno
,Null,upper(b.npsloffice),upper(a.npsloffice)) as npsl, decode(a
10,262 21 488.7 1.0 7.86 20.17 1017492279
Module: SQL*Plus
INSERT into stats$sql_summary ( snap_id
, dbid , instance_number , text_subset
, sharable_mem , sorts , modu
le , loaded_versions , fetches
, executions , loads , invalidations
10,249 22 465.9 1.0 7.70 20.12 2734029811
Module: SQL*Plus
INSERT into stats$sql_statistics ( snap_id
, dbid , instance_number , total_
sql , total_sql_mem , single_use_sql
, single_use_sql_mem ) select :
b3 , :b2 , :b1 , count(1)
6,164 24 256.8 0.6 11.56 54.15 569094110
select workorderno, workorddt, a.oanno as uoanno, decode(b.oanno
,Null,a.oandt, b.oandt) as uoandt, decode(b.oanno,Null,a.roanno,
b.roanno) as uroanno, decode(b.oanno,Null,a.pono,b.pono) as up
ono,decode(b.oanno,null,a.podt,b.podt) as upodt, decode(b.oanno
,Null,upper(a.npsloffice),upper(b.npsloffice)) as npsl,decode(b.
3,625 30 120.8 0.4 10.50 26.76 2315633148
select a.oanno as uoanno,a.roanno as uroanno,a.oandt as uoandt,
a.pono as upono,a.podt as upodt,upper(a.npsloffice) as npsl,dec
ode(d.delicity,null,'NOT AVAILABLE',UPPER(d.delicity)) as dely,
ltrim(rtrim(upper(prospectna))) prospectna, decode(praddr1,null
,' ',ltrim(rtrim(upper(praddr1)))) as pr1, decode(praddr2,null,'
3,582 7 511.7 0.4 0.17 1.10 2255532526
delete from softdb.oanaddr where oanno not in (select oanno from
softdb.oanitem where regndt='07-Aug-2003' and regnno='00CHEN00
23120' and qtndt='07-Aug-2003' and qtnno='00CHEN0023120') and r
egndt='07-Aug-2003' and regnno='00CHEN0023120' and qtndt='07-Au
g-2003' and qtnno='00CHEN0023120'
3,110 8 388.8 0.3 1.39 17.41 2559037884
select a.itemdesc, a.mcslno, a.oanno, a.oandt, a.itemsrlno from
softdb.keytab a, softdb.oanups b where a.oanno = b.oanno(+) and
a.oandt = b.oandt(+) and a.itemsrlno = b.itemsrlno(+) and b.oann
o is null union select a.itemdesc, a.mcslno, a.oanno, a.oandt, a
.itemsrlno from softdb.keytab a, softdb.oanups b where a.oanno
2,359 7 337.0 0.2 0.14 0.44 2169388924
delete from softdb.commdeliaddr where regndt='07-Aug-2003' and r
egnno='00CHEN0023120' and qtndt='07-Aug-2003' and qtnno='00CHEN0
SQL ordered by Reads for DB: ST011 Instance: st011 Snaps: 41 -62
-> End Disk Reads Threshold: 1000
CPU Elapsd
Physical Reads Executions Reads per Exec %Total Time (s) Time (s) Hash Value
023120' and commid not in (select commid from softdb.commdeliite
ms where regndt='07-Aug-2003' and regnno='00CHEN0023120' and qtn
dt='07-Aug-2003' and qtnno='00CHEN0023120')
1,963 7 280.4 0.2 0.27 2.61 3352066490
delete from softdb.oanlevy where oanno not in (select oanno fro
m softdb.oanitem where regndt='07-Aug-2003' and regnno='00CHEN0
023120' and qtndt='07-Aug-2003' and qtnno='00CHEN0023120') and
regndt='07-Aug-2003' and regnno='00CHEN0023120' and qtndt='07-A
ug-2003' and qtnno='00CHEN0023120'
1,547 2 773.5 0.2 0.08 0.31 2526194774
delete from softdb.oanlevy where oanno not in (select oanno fro
m softdb.oanitem where regndt='07-Aug-2003' and regnno='00MUMB0
023121' and qtndt='07-Aug-2003' and qtnno='00MUMB0023121') and
regndt='07-Aug-2003' and regnno='00MUMB0023121' and qtndt='07-A
ug-2003' and qtnno='00MUMB0023121'
1,404 2 702.0 0.1 0.11 0.23 3517028935
select softdb.oanaddr.*, softdb.oanaddr.ROWID from softdb.oanadd
r where delflg='N' and commid is null
1,298 2 649.0 0.1 0.09 0.27 2203325864
delete from softdb.oanaddr where oanno not in (select oanno from
softdb.oanitem where regndt='07-Aug-2003' and regnno='00MUMB00
23121' and qtndt='07-Aug-2003' and qtnno='00MUMB0023121') and r
egndt='07-Aug-2003' and regnno='00MUMB0023121' and qtndt='07-Au
g-2003' and qtnno='00MUMB0023121'
1,261 6 210.2 0.1 0.05 0.15 576637004
delete from softdb.ordterms where commid is not null and regndt=
'07-Aug-2003' and regnno='00CHEN0023120' and qtndt='07-Aug-2003'
and qtnno='00CHEN0023120' and commid not in (select commid from
softdb.commdeliitems where regndt='07-Aug-2003' and regnno='00C
HEN0023120' and qtndt='07-Aug-2003' and qtnno='00CHEN0023120')
1,244 6 207.3 0.1 0.06 0.15 563121091
select softdb.ordterms.*, softdb.ordterms.ROWID from softdb.or
dterms where delflg='N' and regndt ='07-Aug-2003' and regnno='
SQL ordered by Executions for DB: ST011 Instance: st011 Snaps: 41 -62
-> End Executions Threshold: 100
CPU per Elap per
Executions Rows Processed Rows per Exec Exec (s) Exec (s) Hash Value
144,980 144,980 1.0 0.00 0.00 2091761008
select condition from cdef$ where rowid=:1
23,545 0 0.0 0.00 0.00 1981921526
update object_usage set flags=flags+1 where obj#=:1 and bitand(f
lags, 1)=0
16,526 16,519 1.0 0.00 0.00 3016965513
update sys.col_usage$ set equality_preds = equality_preds
+ decode(bitand(:flag,1),0,0,1), equijoin_preds = equijoi
n_preds + decode(bitand(:flag,2),0,0,1), nonequijoin_preds
= nonequijoin_preds + decode(bitand(:flag,4),0,0,1), range_pre
ds = range_preds + decode(bitand(:flag,8),0,0,1),
10,812 0 0.0 0.00 0.00 4031175624
alter session set isolation_level = read committed
8,449 13 0.0 0.00 0.00 2963598673
select job, nvl2(last_date, 1, 0) from sys.job$ where (((:1 <= n
ext_date) and (next_date < :2)) or ((last_date is null) and
(next_date < :3))) and (field1 = :4 or (field1 = 0 and 'Y' = :5)
) and (this_date is null) order by next_date, job
8,437 8,437 1.0 0.00 0.00 2964743345
select count(*) from sys.job$ where (next_date > sysdate) and (n
ext_date < (sysdate+5/86400))
4,152 4,152 1.0 0.00 0.00 3879177167
select :V00001 from dual
2,703 45,951 17.0 0.00 0.00 1947239399
Module: VPXDBA
/* OracleOEM */ select value from v$parameter where name in ('d
b_block_buffers','buffer_pool_keep','db_block_lru_latches','buff
er_pool_recycle', 'log_buffer','cursor_space_for_time','open_cur
sors','shared_pool_size', 'shared_pool_reserved_size','session_c
ached_cursors','parallel_min_servers', 'parallel_max_servers','s
2,533 628,184 248.0 0.00 0.00 71821313
Module: VPXDBA
/* OracleOEM */ select value from v$sysstat order by statistic#
2,532 2,532 1.0 0.00 0.00 3077298272
Module: VPXDBA
/* OracleOEM */ select sum(decode(name,'free memory',bytes)), su
m(bytes) from v$sgastat where pool='shared pool'
2,504 2,504 1.0 0.00 0.00 1818901441
Module: VPXDBA
/* OracleOEM */ select sum(decode(status,'ACTIVE',1,0)),sum(deco
de(status,'INACTIVE',1,0))from v$session
2,492 62,998 25.3 0.01 0.01 2080871317
Module: VPXDBA
SQL ordered by Executions for DB: ST011 Instance: st011 Snaps: 41 -62
-> End Executions Threshold: 100
CPU per Elap per
Executions Rows Processed Rows per Exec Exec (s) Exec (s) Hash Value
/* OracleOEM */ select event,time_waited,total_waits, total_tim
eouts from v$system_event where event not in ('PX Idle Wait','p
mon timer','smon timer','rdbms ipc message', 'parallel dequeue w
ait', 'parallel query dequeue','virtual circuit', 'SQL*Net
message from client','SQL*Net message to client', 'SQL*Ne
2,389 37 0.0 0.00 0.00 4266807470
Module: VPXDBA
/* OracleOEM */ select event, count(*) from v$session_wait where
wait_time = 0 and event not in ('PX Idle Wait','pmon timer','s
mon timer','rdbms ipc message', 'parallel dequeue wait', 'parall
el query dequeue','virtual circuit', 'SQL*Net message from clien
t','SQL*Net message to client','SQL*Net more data to client', 'S
2,196 2,196 1.0 0.00 0.00 1903595484
Module: VPXDBA
/* OracleOEM */ select sum(pins), sum(pinhits), sum(reloads) fro
m v$librarycache
2,196 24,493 11.2 0.00 0.00 2352784315
Module: VPXDBA
/* OracleOEM */ SELECT s.sid, s.serial#, s.fixed_table_sequence,
s.status,NVL(s.username,bg.name), cpu.value tot_cpu, physio.va
lue phys_reads,parse.value hard_parse, mem.value pga,logio.v
alue log_reads FROM v$session s, v$bgprocess bg, (SELE
CT sid,value FROM v$sesstat WHERE statistic# = :1) cpu, (SEL
2,046 3,716 1.8 0.00 0.00 360204161
SELECT BUCKET, ENDPTHASH, ENDPTVAL, UTL_RAW.CAST_TO_
RAW(ENDPTVAL) ENDPTVAL_RAW FROM SYS.EXU8HSTU WHERE
POBJID = :1 AND INTCOL = :2 ORDER BY BUCKET
1,507 0 0.0 0.00 0.00 1930352736
select softdb.oanitem.*, softdb.oanitem.ROWID from softdb.oanite
m where delflg='N' and oandt='' and oanno=0 order by itemsrlno
1,507 0 0.0 0.00 0.00 3801509667
select softdb.oanudetails.*, softdb.oanudetails.ROWID from softd
b.oanudetails where delflg='N' and oandt='' and oanno=0
956 897 0.9 0.00 -0.00 2591785020
select obj#,type#,ctime,mtime,stime,status,dataobj#,flags,oid$,
spare1, spare2 from obj$ where owner#=:1 and name=:2 and namespa
ce=:3 and(remoteowner=:4 or remoteowner is null and :4 is null)a
nd(linkname=:5 or linkname is null and :5 is null)and(subname=:6
or subname is null and :6 is null)
939 1,479 1.6 0.00 0.00 1819073277
select owner#,name,namespace,remoteowner,linkname,p_timestamp,p_
obj#, d_owner#, nvl(property,0),subname from dependency$,obj$ wh
ere d_obj#=:1 and p_obj#=obj#(+) order by order#
939 1,055 1.1 0.00 0.00 4049165760
select order#,columns,types from access$ where d_obj#=:1
SQL ordered by Executions for DB: ST011 Instance: st011 Snaps: 41 -62
-> End Executions Threshold: 100
CPU per Elap per
Executions Rows Processed Rows per Exec Exec (s) Exec (s) Hash Value
807 45,999 57.0 0.00 0.00 2705315382
select length(invcode), softdb.blocnmanager.ROWID from softdb.bl
ocnmanager
550 204 0.4 0.00 0.00 2197684639
BEGIN SYS.DBMS_DESCRIBE.DESCRIBE_PROCEDURE(:object_name,:res1,:r
es2,:overload,:position,:level,:argument,:datatype,:default,:in_
out,:length,:precision,:scale,:radix,:spare); END;
SQL ordered by Parse Calls for DB: ST011 Instance: st011 Snaps: 41 -62
-> End Parse Calls Threshold: 1000
% Total
Parse Calls Executions Parses Hash Value
144,980 144,980 39.95 2091761008
select condition from cdef$ where rowid=:1
23,545 23,545 6.49 1981921526
update object_usage set flags=flags+1 where obj#=:1 and bitand(f
lags, 1)=0
10,812 10,812 2.98 4031175624
alter session set isolation_level = read committed
4,152 4,152 1.14 3879177167
select :V00001 from dual
2,379 4 0.66 1635934014
insert into sys.col_usage$ values ( :objn, :coln, decode(bit
and(:flag,1),0,0,1), decode(bitand(:flag,2),0,0,1), decode(b
itand(:flag,4),0,0,1), decode(bitand(:flag,8),0,0,1), decode
(bitand(:flag,16),0,0,1), decode(bitand(:flag,32),0,0,1), :t
ime)
2,336 16,526 0.64 3016965513
update sys.col_usage$ set equality_preds = equality_preds
+ decode(bitand(:flag,1),0,0,1), equijoin_preds = equijoi
n_preds + decode(bitand(:flag,2),0,0,1), nonequijoin_preds
= nonequijoin_preds + decode(bitand(:flag,4),0,0,1), range_pre
ds = range_preds + decode(bitand(:flag,8),0,0,1),
1,655 0 0.46 3877138136
SELECT softdb.logpslipitem.*, softdb.logpslipitem.ROWID FROM sof
tdb.logpslipitem
1,507 1,507 0.42 1930352736
select softdb.oanitem.*, softdb.oanitem.ROWID from softdb.oanite
m where delflg='N' and oandt='' and oanno=0 order by itemsrlno
1,507 1,507 0.42 3801509667
select softdb.oanudetails.*, softdb.oanudetails.ROWID from softd
b.oanudetails where delflg='N' and oandt='' and oanno=0
1,357 0 0.37 2921321908
SELECT softdb.keytab.*, softdb.keytab.ROWID FROM softdb.keytab
1,175 0 0.32 126022112
SELECT softdb.logpslip.*, softdb.logpslip.ROWID FROM softdb.logp
slip
1,175 0 0.32 3554166107
select * from softdb.logpslipitem
1,175 0 0.32 3928397926
select * from softdb.logpslip
939 939 0.26 1819073277
select owner#,name,namespace,remoteowner,linkname,p_timestamp,p_
SQL ordered by Parse Calls for DB: ST011 Instance: st011 Snaps: 41 -62
-> End Parse Calls Threshold: 1000
% Total
Parse Calls Executions Parses Hash Value
obj#, d_owner#, nvl(property,0),subname from dependency$,obj$ wh
ere d_obj#=:1 and p_obj#=obj#(+) order by order#
939 939 0.26 4049165760
select order#,columns,types from access$ where d_obj#=:1
807 807 0.22 2705315382
select length(invcode), softdb.blocnmanager.ROWID from softdb.bl
ocnmanager
718 359 0.20 3882939652
INSERT INTO "SOFTDB"."MULTIUSER" ("REGNNO","PROCESSNAME","USRNAM
E","INSTLOCATION","MCNAME","IPADDR","REGNDT") VALUES (:V00001,:V
00002,:V00003,:V00004,:V00005,:V00006,:V00007)
650 325 0.18 3046100812
UPDATE "SOFTDB"."GENCOMMID" SET "GNO"=:V00001,"GDT"=:V00002 WHER
E "GNO"=:V00003 AND "GDT"=:V00004 AND "ROWID"=:V00005
550 550 0.15 2197684639
BEGIN SYS.DBMS_DESCRIBE.DESCRIBE_PROCEDURE(:object_name,:res1,:r
es2,:overload,:position,:level,:argument,:datatype,:default,:in_
out,:length,:precision,:scale,:radix,:spare); END;
510 510 0.14 3187596784
select rownum as srlno,softdb.keytab.itemdesc as item,1 as sets,
qty from (select itemsrlno,itemdesc,1 as qty,oanno,oandt from s
oftdb.oanups where delflg='N' and oandt='' and oanno=0 union se
lect itemsrlno,itemdesc,deliqty/delisets as qty, oanno,oandt fr
om softdb.oanbat where delflg='N' and oandt='' and oanno=0 and i
443 443 0.12 1781254858
DELETE multiuser where floor((((((sysdate-recentrytime)*24*60*60
)/3600)*3600)/60)*60) >='180'
443 443 0.12 3292238282
Select softdb.multiuser.*, softdb.multiuser.ROWID from softdb.mu
ltiuser
422 422 0.12 1919856422
select invcode, softdb.blocnmanager.ROWID from softdb.blocnmanag
er
390 195 0.11 2471695061
UPDATE "SOFTDB"."CUST_MAST" SET "CUST_LST_NO"=:V00001,"CUST_CST_
NO"=:V00002 WHERE "CUST_LST_NO" IS NULL AND "CUST_CST_NO" IS NUL
L AND "ROWID"=:V00003
387 387 0.11 620898497
select * from (select null table_catalog, idx.table_owner table_
schema, idx.table_name table_name, null index_catalog, idx.owner
index_schema, idx.index_name index_name, null primary_key, deco
de(idx.uniqueness, 'UNIQUE', 65535, 0) unique_, decode(idx.index
type, 'CLUSTER', 65535, 0) clustered, null type, null fillfact
SQL ordered by Parse Calls for DB: ST011 Instance: st011 Snaps: 41 -62
-> End Parse Calls Threshold: 1000
% Total
Parse Calls Executions Parses Hash Value
387 387 0.11 1647834759
select * from (select null table_catalog, ac.owner table_schema,
ac.table_name table_name, acc.column_name column_name, null col
umn_guid, null column_propid, acc.position ordinal, ac.constrain
t_name pk_name from all_constraints ac, all_cons_columns acc whe
re ac.owner=acc.owner and ac.constraint_type='P' and ac.constrai
Instance Activity Stats for DB: ST011 Instance: st011 Snaps: 41 -62
Statistic Total per Second per Trans
CPU used by this session 102,453 1.6 4.8
CPU used when call started 102,366 1.6 4.8
CR blocks created 30 0.0 0.0
DBWR buffers scanned 1,184 0.0 0.1
DBWR checkpoint buffers written 7,748 0.1 0.4
DBWR checkpoints 9 0.0 0.0
DBWR free buffers found 1,184 0.0 0.1
DBWR lru scans 1 0.0 0.0
DBWR make free requests 1 0.0 0.0
DBWR summed scan depth 1,184 0.0 0.1
DBWR transaction table writes 295 0.0 0.0
DBWR undo block writes 1,681 0.0 0.1
SQL*Net roundtrips to/from client 1,979,199 29.9 92.3
active txn count during cleanout 682 0.0 0.0
background checkpoints completed 1 0.0 0.0
background checkpoints started 1 0.0 0.0
background timeouts 74,152 1.1 3.5
buffer is not pinned count 45,599,192 689.3 2,126.9
buffer is pinned count 55,241,935 835.1 2,576.7
bytes received via SQL*Net from c 140,543,392 2,124.5 6,555.5
bytes sent via SQL*Net to client 16,971,012,142 256,538.0 791,595.3
calls to get snapshot scn: kcmgss 706,463 10.7 33.0
calls to kcmgas 20,519 0.3 1.0
calls to kcmgcs 591 0.0 0.0
change write time 175 0.0 0.0
cleanout - number of ktugct calls 866 0.0 0.0
cleanouts and rollbacks - consist 16 0.0 0.0
cleanouts only - consistent read 123 0.0 0.0
cluster key scan block gets 266,789 4.0 12.4
cluster key scans 104,922 1.6 4.9
commit cleanout failures: callbac 5 0.0 0.0
commit cleanouts 28,117 0.4 1.3
commit cleanouts successfully com 28,112 0.4 1.3
commit txn count during cleanout 458 0.0 0.0
consistent changes 295 0.0 0.0
consistent gets 57,426,682 868.1 2,678.6
consistent gets - examination 2,489,520 37.6 116.1
cursor authentications 27,054 0.4 1.3
data blocks consistent reads - un 283 0.0 0.0
db block changes 139,574 2.1 6.5
db block gets 130,344 2.0 6.1
deferred (CURRENT) block cleanout 17,394 0.3 0.8
dirty buffers inspected 3 0.0 0.0
enqueue conversions 583 0.0 0.0
enqueue releases 112,816 1.7 5.3
enqueue requests 112,817 1.7 5.3
enqueue waits 9 0.0 0.0
execute count 386,246 5.8 18.0
free buffer inspected 3 0.0 0.0
free buffer requested 578,165 8.7 27.0
hot buffers moved to head of LRU 3,435 0.1 0.2
immediate (CR) block cleanout app 139 0.0 0.0
immediate (CURRENT) block cleanou 3,076 0.1 0.1
index fast full scans (full) 602 0.0 0.0
index fetch by key 1,311,085 19.8 61.2
index scans kdiixs1 26,311,841 397.7 1,227.3
Instance Activity Stats for DB: ST011 Instance: st011 Snaps: 41 -62
Statistic Total per Second per Trans
leaf node 90-10 splits 28 0.0 0.0
leaf node splits 272 0.0 0.0
logons cumulative 181 0.0 0.0
messages received 12,637 0.2 0.6
messages sent 12,637 0.2 0.6
no buffer to keep pinned count 0 0.0 0.0
no work - consistent read gets 28,721,411 434.2 1,339.7
opened cursors cumulative 327,186 5.0 15.3
parse count (failures) 6,872 0.1 0.3
parse count (hard) 59,067 0.9 2.8
parse count (total) 362,907 5.5 16.9
parse time cpu 13,489 0.2 0.6
parse time elapsed 13,800 0.2 0.6
physical reads 995,675 15.1 46.4
physical reads direct 426,595 6.5 19.9
physical writes 266,178 4.0 12.4
physical writes direct 258,427 3.9 12.1
physical writes non checkpoint 261,972 4.0 12.2
prefetched blocks 473,387 7.2 22.1
process last non-idle time 124,048,980,297 1,875,154.6 5,786,136.5
recovery blocks read 0 0.0 0.0
recursive calls 1,469,320 22.2 68.5
recursive cpu usage 5,757 0.1 0.3
redo blocks written 66,895 1.0 3.1
redo entries 73,459 1.1 3.4
redo size 29,472,392 445.5 1,374.7
redo synch time 8,922 0.1 0.4
redo synch writes 10,687 0.2 0.5
redo wastage 3,617,376 54.7 168.7
redo write time 9,727 0.2 0.5
redo writer latching time 3 0.0 0.0
redo writes 12,337 0.2 0.6
rollback changes - undo records a 22 0.0 0.0
rollbacks only - consistent read 19 0.0 0.0
rows fetched via callback 1,127,456 17.0 52.6
session connect time 124,048,980,297 1,875,154.6 5,786,136.5
session logical reads 57,557,026 870.1 2,684.7
session pga memory 428,308 6.5 20.0
session pga memory max 63,116 1.0 2.9
session uga memory 4,296,889,276 64,952.8 200,424.0
session uga memory max 123,298,368 1,863.8 5,751.1
shared hash latch upgrades - no w 26,310,630 397.7 1,227.2
sorts (disk) 367 0.0 0.0
sorts (memory) 89,870 1.4 4.2
sorts (rows) 13,381,553 202.3 624.2
summed dirty queue length 3 0.0 0.0
switch current to new buffer 6,910 0.1 0.3
table fetch by rowid 32,481,075 491.0 1,515.1
table fetch continued row 13,074 0.2 0.6
table scan blocks gotten 8,213,616 124.2 383.1
table scan rows gotten 303,670,060 4,590.4 14,164.4
table scans (long tables) 2,799 0.0 0.1
table scans (short tables) 76,890 1.2 3.6
transaction rollbacks 11 0.0 0.0
user calls 1,067,154 16.1 49.8
user commits 10,678 0.2 0.5
Instance Activity Stats for DB: ST011 Instance: st011 Snaps: 41 -62
Statistic Total per Second per Trans
user rollbacks 10,761 0.2 0.5
workarea executions - onepass 803 0.0 0.0
workarea executions - optimal 126,987 1.9 5.9
write clones created in foregroun 2 0.0 0.0
Tablespace IO Stats for DB: ST011 Instance: st011 Snaps: 41 -62
->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)
TEMP
397,017 6 0.8 1.1 199,016 3 0 0.0
SOFTDB
91,699 1 1.0 6.1 1,823 0 0 0.0
USERS
450 0 5.3 1.0 2,524 0 0 0.0
SYSTEM
2,438 0 2.9 1.3 239 0 0 0.0
INDX
1,095 0 4.4 1.5 1,153 0 0 0.0
UNDOTBS1
3 0 13.3 1.0 2,017 0 8 0.0
XDB
74 0 4.9 1.1 1 0 0 0.0
DRSYS
3 0 6.7 1.0 1 0 0 0.0
TOOLS
3 0 6.7 1.0 1 0 0 0.0
File IO Stats for DB: ST011 Instance: st011 Snaps: 41 -62
->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)
DRSYS E:\ORACLE\ORADATA\ST011\DRSYS01.DBF
3 0 6.7 1.0 1 0 0
INDX E:\ORACLE\ORADATA\ST011\INDX01.DBF
1,095 0 4.4 1.5 1,153 0 0
SOFTDB E:\ORACLE\ORADATA\ST011\SOFTDB01.DBF
91,699 1 1.0 6.1 1,823 0 0
SYSTEM E:\ORACLE\ORADATA\ST011\SYSTEM01.DBF
2,438 0 2.9 1.3 239 0 0
TEMP E:\ORACLE\ORADATA\ST011\TEMP01.DBF
397,017 6 0.8 1.1 199,016 3 0
TOOLS E:\ORACLE\ORADATA\ST011\TOOLS01.DBF
3 0 6.7 1.0 1 0 0
UNDOTBS1 E:\ORACLE\ORADATA\ST011\UNDOTBS01.DBF
3 0 13.3 1.0 2,017 0 8 0.0
USERS E:\ORACLE\ORADATA\ST011\USERS01.DBF
450 0 5.3 1.0 2,524 0 0
XDB E:\ORACLE\ORADATA\ST011\XDB01.DBF
74 0 4.9 1.1 1 0 0
Buffer Pool Statistics for DB: ST011 Instance: st011 Snaps: 41 -62
-> Standard block size Pools D: default, K: keep, R: recycle
-> Default Pools for other block sizes: 2k, 4k, 8k, 16k, 32k
Free Write Buffer
Number of Cache Buffer Physical Physical Buffer Complete Busy
P Buffers Hit % Gets Reads Writes Waits Waits Waits
D 17,017 99.5 110,003,087 569,129 7,751 0 0 8
Instance Recovery Stats for DB: ST011 Instance: st011 Snaps: 41 -62
-> 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 34 14 193 771 341 184320 341
E 34 14 141 727 20 184320 20
Buffer Pool Advisory for DB: ST011 Instance: st011 End Snap: 62
-> 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 16 .1 2,002 152.10 87,449,432
D 32 .2 4,004 87.09 50,071,540
D 48 .4 6,006 55.08 31,668,480
D 64 .5 8,008 36.93 21,232,658
D 80 .6 10,010 16.08 9,246,410
D 96 .7 12,012 6.32 3,635,060
D 112 .8 14,014 2.48 1,423,893
D 128 .9 16,016 1.09 627,130
D 136 1.0 17,017 1.00 574,935
D 144 1.1 18,018 0.96 552,001
D 160 1.2 20,020 0.91 525,903
D 176 1.3 22,022 0.90 518,390
D 192 1.4 24,024 0.90 518,390
D 208 1.5 26,026 0.90 518,390
D 224 1.6 28,028 0.90 518,390
D 240 1.8 30,030 0.90 518,390
D 256 1.9 32,032 0.90 518,390
D 272 2.0 34,034 0.90 518,390
D 288 2.1 36,036 0.90 518,390
D 304 2.2 38,038 0.90 518,390
D 320 2.4 40,040 0.90 518,390
Buffer wait Statistics for DB: ST011 Instance: st011 Snaps: 41 -62
-> ordered by wait time desc, waits desc
Tot Wait Avg
Class Waits Time (s) Time (ms)
undo header 9 0 0
PGA Aggr Target Stats for DB: ST011 Instance: st011 Snaps: 41 -62
-> B: Begin snap E: End snap (rows dentified with B or E contain data
which is absolute i.e. not diffed over the interval)
-> PGA cache hit % - percentage of W/A (WorkArea) data processed only in-memory
-> 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 Cache Hit % W/A MB Processed Extra W/A MB Read/Written
72.5 6,444 2,443
%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 104 80 17.8 0.0 .0 .0 .0 5,324
E 104 81 18.5 0.0 .0 .0 .0 5,324
PGA Aggr Target Histogram for DB: ST011 Instance: st011 Snaps: 41 -62
-> Optimal Executions are purely in-memory operations
Low High
Optimal Optimal Total Execs Optimal Execs 1-Pass Execs M-Pass Execs
8K 16K 119,925 119,925 0 0
16K 32K 1,796 1,796 0 0
32K 64K 147 147 0 0
64K 128K 1,167 1,167 0 0
128K 256K 562 562 0 0
256K 512K 647 615 32 0
512K 1024K 2,770 2,412 358 0
1M 2M 588 256 332 0
2M 4M 70 10 60 0
4M 8M 36 20 16 0
16M 32M 4 0 4 0
1G 2G 1 0 1 0
PGA Memory Advisory for DB: ST011 Instance: st011 End Snap: 62
-> 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
13 0.1 1,552.2 362.1 81.0 27
26 0.3 1,552.2 85.5 95.0 0
52 0.5 1,552.2 74.5 95.0 0
78 0.8 1,552.2 74.5 95.0 0
104 1.0 1,552.2 55.1 97.0 0
125 1.2 1,552.2 0.0 100.0 0
146 1.4 1,552.2 0.0 100.0 0
166 1.6 1,552.2 0.0 100.0 0
187 1.8 1,552.2 0.0 100.0 0
208 2.0 1,552.2 0.0 100.0 0
312 3.0 1,552.2 0.0 100.0 0
416 4.0 1,552.2 0.0 100.0 0
624 6.0 1,552.2 0.0 100.0 0
832 8.0 1,552.2 0.0 100.0 0
Enqueue activity for DB: ST011 Instance: st011 Snaps: 41 -62
-> Enqueue stats gathered prior to 9i should not be compared with 9i data
-> ordered by Wait Time desc, Waits desc
Avg Wt Wait
Eq Requests Succ Gets Failed Gets Waits Time (ms) Time (s)
TC 40 40 0 8 254.13 2
PE 184 184 0 1 47.00 0
Rollback Segment Stats for DB: ST011 Instance: st011 Snaps: 41 -62
->A high value for "Pct Waits" suggests more rollback segments may be required
->RBS stats may not be accurate between begin and end snaps when using Auto Undo
managment, as RBS may be dynamically created and dropped as needed
Trans Table Pct Undo Bytes
RBS No Gets Waits Written Wraps Shrinks Extends
0 246.0 0.00 0 0 0 0
1 2,947.0 0.00 1,268,846 4 1 1
2 3,520.0 0.00 1,003,166 18 3 6
3 3,511.0 0.00 973,498 18 1 3
4 2,662.0 0.00 1,010,600 4 0 1
5 3,941.0 0.03 1,042,464 20 3 8
6 3,474.0 0.00 1,106,576 21 1 6
7 2,546.0 0.00 756,036 15 3 4
8 3,943.0 0.00 1,112,166 22 3 11
9 3,368.0 0.00 832,596 14 2 4
10 3,039.0 0.20 971,780 20 3 14
Rollback Segment Storage for DB: ST011 Instance: st011 Snaps: 41 -62
->Optimal Size should be larger than Avg Active
RBS No Segment Size Avg Active Optimal Size Maximum Size
0 385,024 0 385,024
1 1,171,456 191,840 2,220,032
2 385,024 78,348 516,096
3 450,560 112,391 450,560
4 2,220,032 101,425 2,220,032
5 778,240 134,380 843,776
6 647,168 78,286 647,168
7 319,488 86,191 581,632
8 516,096 90,060 778,240
9 516,096 49,626 516,096
10 450,560 132,513 647,168
Undo Segment Summary for DB: ST011 Instance: st011 Snaps: 41 -62
-> 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 Snapshot Out of uS/uR/uU/
TS# Blocks Trans Len (s) Concurcy Too Old Space eS/eR/eU
1 1,555 551,825 1,575 2 0 0 0/0/15/0/0/0
Undo Segment Stats for DB: ST011 Instance: st011 Snaps: 41 -62
-> ordered by Time desc
Undo Num Max Qry Max Tx Snap Out of uS/uR/uU/
End Time Blocks Trans Len (s) Concy Too Old Space eS/eR/eU
08-Aug 03:53 0 0 0 0 0 0 0/0/0/0/0/0
08-Aug 03:03 31 13,744 0 1 0 0 0/0/0/0/0/0
08-Aug 02:53 0 0 0 0 0 0 0/0/0/0/0/0
08-Aug 02:03 31 13,717 0 1 0 0 0/0/0/0/0/0
08-Aug 01:53 0 0 0 0 0 0 0/0/0/0/0/0
08-Aug 01:03 29 13,690 1 1 0 0 0/0/0/0/0/0
08-Aug 00:53 0 0 0 0 0 0 0/0/0/0/0/0
08-Aug 00:03 41 13,665 1 1 0 0 0/0/0/0/0/0
07-Aug 23:53 0 0 0 0 0 0 0/0/0/0/0/0
07-Aug 23:03 25 13,634 1 2 0 0 0/0/0/0/0/0
07-Aug 22:53 0 0 0 0 0 0 0/0/0/0/0/0
07-Aug 22:03 29 13,611 0 2 0 0 0/0/0/0/0/0
07-Aug 21:53 0 0 0 0 0 0 0/0/0/0/0/0
07-Aug 21:43 1 13,595 0 1 0 0 0/0/8/0/0/0
07-Aug 21:33 1 13,591 0 1 0 0 0/0/0/0/0/0
07-Aug 21:23 7 13,544 9 1 0 0 0/0/0/0/0/0
07-Aug 21:13 1 13,448 12 1 0 0 0/0/0/0/0/0
07-Aug 21:03 35 13,348 1 1 0 0 0/0/0/0/0/0
07-Aug 20:53 7 13,212 9 1 0 0 0/0/0/0/0/0
07-Aug 20:43 9 12,967 13 1 0 0 0/0/0/0/0/0
07-Aug 20:33 4 12,785 3 1 0 0 0/0/0/0/0/0
07-Aug 20:23 4 12,717 3 1 0 0 0/0/0/0/0/0
07-Aug 20:13 7 12,607 9 1 0 0 0/0/0/0/0/0
07-Aug 20:03 49 12,472 8 2 0 0 0/0/0/0/0/0
07-Aug 19:53 0 0 0 0 0 0 0/0/0/0/0/0
07-Aug 19:43 10 12,425 2 1 0 0 0/0/0/0/0/0
07-Aug 19:33 14 12,263 30 1 0 0 0/0/0/0/0/0
07-Aug 19:23 25 12,046 4 1 0 0 0/0/0/0/0/0
07-Aug 19:13 52 11,686 2 1 0 0 0/0/0/0/0/0
07-Aug 19:03 71 11,077 7 1 0 0 0/0/0/0/0/0
07-Aug 18:53 41 10,558 4 1 0 0 0/0/0/0/0/0
07-Aug 18:43 17 9,996 12 1 0 0 0/0/0/0/0/0
07-Aug 18:33 6 9,744 30 1 0 0 0/0/0/0/0/0
07-Aug 18:23 9 9,548 2 1 0 0 0/0/0/0/0/0
Latch Activity for DB: ST011 Instance: st011 Snaps: 41 -62
->"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 Requests Miss /Miss (s) Requests Miss
Consistent RBA 12,338 0.0 0 0
FAL request queue 2 0.0 0 0
FAL subheap alocation 0 0 2 0.0
FIB s.o chain latch 72 0.0 0 0
FOB s.o list latch 388 0.0 0 0
JOX SGA heap latch 3,415 0.0 0 3,013 0.0
NLS data objects 3 0.0 0 0
QMT 1 0.0 0 0
SQL memory manager latch 21 0.0 0 21,360 0.0
SQL memory manager worka 1,455,705 0.0 0 0
Token Manager 0 0 2 0.0
active checkpoint queue 22,780 0.0 0 2 0.0
alert log latch 4 0.0 0 2 0.0
archive control 2,189 0.0 0 0
archive process latch 1,299 0.2 0.0 0 0
begin backup scn array 8 0.0 0 0
cache buffer handles 339,925 0.0 0 0
cache buffers chains 113,609,670 0.0 0.0 0 1,095,458 0.0
cache buffers lru chain 2,057,063 0.0 0 13,776 0.0
channel handle pool latc 194 0.0 0 0
channel operations paren 43,420 0.0 0 0
checkpoint queue latch 1,094,874 0.0 0.0 0 7,196 0.0
child cursor hash table 543,267 0.0 0 0
dml lock allocation 99,677 0.0 0 0
dummy allocation 362 2.8 0.0 0 0
enqueue hash chains 226,227 0.0 0 0
enqueues 235,237 0.0 0.0 0 0
event group latch 95 0.0 0 0
file number translation 699,304 0.0 0.0 0 0
hash table column usage 2,980 0.0 0 779,274 0.0
hash table modification 5 0.0 0 2 0.0
job workq parent latch 0 0 26 7.7
job_queue_processes para 745 0.0 0 2 0.0
kmcptab latch 1,788 0.0 0 0
kmcpvec latch 0 0 1,788 0.0
ksfv messages 0 0 4 0.0
ktm global data 260 0.0 0 0
lgwr LWN SCN 29,530 0.0 0 0
library cache 7,579,771 0.0 0.0 0 112,898 0.1
library cache load lock 5,302 0.0 0 0
library cache pin 3,098,174 0.0 0.0 0 0
library cache pin alloca 2,124,257 0.0 0.0 0 0
list of block allocation 321 0.0 0 0
loader state object free 1,186 0.0 0 0
longop free list parent 9 0.0 0 9 0.0
message pool operations 9 0.0 0 0
messages 209,721 0.2 0.0 0 0
mostly latch-free SCN 29,532 0.0 0.0 0 0
multiblock read objects 181,050 0.0 0 2 0.0
name-service namespace o 0 0 2 0.0
Latch Activity for DB: ST011 Instance: st011 Snaps: 41 -62
->"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 Requests Miss /Miss (s) Requests Miss
ncodef allocation latch 1,065 0.0 0 0
object stats modificatio 357 0.0 0 2 0.0
post/wait queue 24,713 0.0 0 10,698 0.0
process allocation 95 0.0 0 95 0.0
process group creation 189 0.0 0 0
qm_init_sga 1 0.0 0 0
redo allocation 115,339 0.0 0.0 0 0
redo copy 0 0 73,511 0.1
redo writing 92,285 0.0 0 0
resumable state object 351 0.0 0 0
row cache enqueue latch 3,995,948 0.0 0.0 0 0
row cache objects 4,004,202 0.0 0 696 0.0
sequence cache 430 0.0 0 0
session allocation 292,885 0.0 0.0 0 0
session idle bit 2,269,446 0.0 0.0 0 0
session switching 1,065 0.0 0 0
session timer 22,218 0.0 0 0
shared java pool 860 0.0 0 0
shared pool 4,913,350 0.0 0.0 0 0
sim partition latch 0 0 110 0.0
simulator hash latch 4,433,428 0.0 0 0
simulator lru latch 43,829 0.0 0 33,464 0.0
sort extent pool 6,608 0.0 0 0
temp lob duration state 2 0.0 0 0
trace latch 13 0.0 0 0
transaction allocation 931,196 0.0 0 0
transaction branch alloc 1,065 0.0 0 0
undo global data 57,750 0.0 0.0 0 0
user lock 551 0.0 0 0
vecio buf des 0 0 2 0.0
virtual circuit buffers 10,648,289 0.2 0.0 0 0
virtual circuit queues 5,140,393 0.0 0.0 0 0
virtual circuits 1,824,349 0.0 0.0 0 0
Latch Sleep breakdown for DB: ST011 Instance: st011 Snaps: 41 -62
-> ordered by misses desc
Get Spin &
Latch Name Requests Misses Sleeps Sleeps 1->4
virtual circuit buffers 10,648,289 19,024 3 19021/3/0/0/
0
shared pool 4,913,350 181 3 178/3/0/0/0
cache buffers chains 113,609,670 63 1 0/0/0/0/0
Latch Miss Sources for DB: ST011 Instance: st011 Snaps: 41 -62
-> only latches with sleeps are shown
-> ordered by name, sleeps desc
NoWait Waiter
Latch Name Where Misses Sleeps Sleeps
cache buffers chains kcbgtcr: kslbegin excl 0 1 0
shared pool kghalo 0 3 3
virtual circuits kmcfms 0 1 1
virtual circuits kmcgms: if not shared serv 0 1 0
virtual circuits kmcmbf 0 1 1
Dictionary Cache Stats for DB: ST011 Instance: st011 Snaps: 41 -62
->"Pct Misses" should be very low (< 2% in most cases)
->"Cache Usage" is the number of cache entries being used
->"Pct SGA" is the ratio of usage to allocated size for that cache
Get Pct Scan Pct Mod Final
Cache Requests Miss Reqs Miss Reqs Usage
dc_files 3,248 0.2 0 0 8
dc_global_oids 12,826 1.0 0 0 135
dc_histogram_defs 1,214,659 0.1 0 0 2,451
dc_object_ids 325,383 0.2 0 0 793
dc_objects 72,357 1.9 0 2 1,504
dc_profiles 125 0.0 0 0 1
dc_qmc_cache_entries 1 100.0 0 0 1
dc_rollback_segments 4,967 0.0 0 0 12
dc_segments 168,507 0.4 0 0 760
dc_sequences 8 37.5 0 8 2
dc_tablespace_quotas 5 40.0 0 5 2
dc_tablespaces 56,795 0.0 0 0 9
dc_user_grants 1,393 1.1 0 0 22
dc_usernames 70,029 0.0 0 0 15
dc_users 71,699 0.0 0 0 25
Library Cache Activity for DB: ST011 Instance: st011 Snaps: 41 -62
->"Pct Misses" should be very low
Get Pct Pin Pct Invali-
Namespace Requests Miss Requests Miss Reloads dations
BODY 225 16.4 226 18.6 3 0
CLUSTER 1,272 0.3 1,008 0.8 0 0
JAVA DATA 2 100.0 9 44.4 0 0
SQL AREA 368,746 14.6 1,388,192 8.3 5,561 1
TABLE/PROCEDURE 114,852 1.3 375,552 0.9 494 0
TRIGGER 1,082 1.0 1,082 1.4 4 0
Shared Pool Advisory for DB: ST011 Instance: st011 End Snap: 62
-> 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
Estd
Shared Pool SP Estd Estd Estd Lib LC Time
Size for Size Lib Cache Lib Cache Cache Time Saved Estd Lib Cache
Estim (M) Factr Size (M) Mem Obj Saved (s) Factr Mem Obj Hits
96 .6 96 20,704 1,595 1.0 896,845
120 .7 119 25,821 1,596 1.0 898,184
144 .9 142 30,844 1,596 1.0 899,133
168 1.0 165 35,862 1,597 1.0 900,259
192 1.1 188 41,079 1,598 1.0 901,912
216 1.3 215 47,275 1,598 1.0 902,360
240 1.4 238 52,517 1,598 1.0 903,089
264 1.6 261 58,043 1,598 1.0 903,310
288 1.7 284 63,632 1,598 1.0 903,711
312 1.9 307 69,230 1,598 1.0 904,029
336 2.0 338 76,368 1,598 1.0 904,158
SGA Memory Summary for DB: ST011 Instance: st011 Snaps: 41 -62
SGA regions Size in Bytes
Database Buffers 142,606,336
Fixed Size 454,356
Redo Buffers 667,648
Variable Size 486,539,264
sum 630,267,604
SGA breakdown difference for DB: ST011 Instance: st011 Snaps: 41 -62
Pool Name Begin value End value % Diff
java free memory 33,554,432 30,031,872 -10.50
large free memory 24,861,188 24,957,400 0.39
large session heap 304,636 208,424 -31.58
shared 1M buffer 2,098,176 2,098,176 0.00
shared FileOpenBlock 695,504 695,504 0.00
shared KGK heap 3,756 3,756 0.00
shared KGLS heap 1,652,428 2,590,108 56.75
shared KQR M PO 861,220 2,452,776 184.80
shared KQR S PO 77,148 239,708 210.71
shared KQR S SO 1,792 5,632 214.29
shared KSXR pending messages que 841,036 841,036 0.00
shared KSXR receive buffers 1,033,000 1,033,000 0.00
shared MTTR advisory 25,400 29,636 16.68
shared PL/SQL DIANA 625,620 951,760 52.13
shared PL/SQL MPCODE 358,152 902,912 152.10
shared PLS non-lib hp 2,068 2,068 0.00
shared dictionary cache 1,610,880 1,610,880 0.00
shared errors 25,144 46,460 84.78
shared event statistics per sess 1,718,360 1,718,360 0.00
shared fixed allocation callback 220 220 0.00
shared free memory 157,840,156 13,956,720 -91.16
shared joxs heap init 4,220 4,220 0.00
shared kgl simulator 694,520 9,560,380 #######
shared library cache 4,829,312 39,226,604 712.26
shared message pool freequeue 834,752 834,752 0.00
shared miscellaneous 5,094,676 7,076,492 38.90
shared parameters 5,220 32,976 531.72
shared sessions 410,720 410,720 0.00
shared sim memory hea 93,176 93,176 0.00
shared sql area 9,864,252 100,764,460 921.51
shared table definiti 2,040 5,920 190.20
shared trigger defini 1,888 2,208 16.95
shared trigger inform 1,108 1,324 19.49
shared trigger source 160 1,168 630.00
buffer_cache 142,606,336 142,606,336 0.00
fixed_sga 454,356 454,356 0.00
log_buffer 656,384 656,384 0.00
init.ora Parameters for DB: ST011 Instance: st011 Snaps: 41 -62
End value
Parameter Name Begin value (if different)
background_dump_dest E:\oracle\admin\ST011\bdump
compatible 9.2.0.1.0
control_files E:\oracle\oradata\ST011\control01
core_dump_dest E:\oracle\admin\ST011\cdump
db_block_size 8192
db_cache_size 142606336
db_domain
db_file_multiblock_read_count 16 8
db_name ST011
dispatchers (PROTOCOL=TCP)
fast_start_mttr_target 300
hash_join_enabled TRUE
instance_name ST011
java_pool_size 33554432
job_queue_processes 0 5
large_pool_size 25165824
log_archive_dest_1 LOCATION=E:\oracle\oradata\ST011\
log_archive_format %t_%s.dbf
log_archive_start TRUE
open_cursors 300
pga_aggregate_target 109051904
processes 150
query_rewrite_enabled FALSE
remote_login_passwordfile EXCLUSIVE
sga_max_size 630267604
shared_pool_size 176160768
sort_area_size 524288
star_transformation_enabled FALSE
timed_statistics TRUE
undo_management AUTO
undo_retention 10800
undo_tablespace UNDOTBS1
user_dump_dest E:\oracle\admin\ST011\udump
End of ReportFrederic's right... you're summing up too many statspacks ..
Can't see anything specific apart from the fact that Statspack itself is showing up in the top statements.
First : define 'Slow' . What is your goal for 'Ok' ?
Start thinking about sql_trace, tkprof and 10046 traces -
Hi,
i need to take Statspack reports every day 8 times am i run spcreate every time for creating report or i can run by connecting perfstat/perfstat user and run @spreport.sql is enough.plz advise on this .
thanks®ards
baleeswarBy default, Oracle ships with a good document (spdoc.txt) on STATSPACK, which will definitely guide you clearly the basic understanding and information of STATSPACK.
Default location for this file spdoc.txt is under
Unix/Linux:
$ORACLE_HOME/rdbms/admin
Windows:
%ORACLE_HOME%\rdbms\admin
Regards,
Sabdar Syed. -
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 -
Peformance of one process is slow ( statspack report is attached)
Hi,
My version is 9.2.0.7 (HP-UX Itanium)
we have recently migrated the DB from windows 2003 to Unix (HP-UX Itanium 11.23).
we have one process which usually takes 15 mins before migration, now it is taking 25 mins to complete. I did not change anything at db level. same init.ora parameters. tables and indexes statistiscs are upto to date.
Please guide me, what might be the wrong at instance level. Here I am skipping the sql query portion of statspack report due to security reasons.
this statspack report is taken before running the process and after completion of process.
STATSPACK report for
DB Name DB Id Instance Inst Num Release Cluster Host
UAT 496948094 UAT 1 9.2.0.7.0 NO dbt
Snap Id Snap Time Sessions Curs/Sess Comment
Begin Snap: 2 15-Jul-09 10:59:05 11 2.7
End Snap: 3 15-Jul-09 12:42:18 17 4.4
Elapsed: 103.22 (mins)
Cache Sizes (end)
~~~~~~~~~~~~~~~~~
Buffer Cache: 400M Std Block Size: 8K
Shared Pool Size: 160M Log Buffer: 512K
Load Profile
~~~~~~~~~~~~ Per Second Per Transaction
Redo size: 44,830.27 435,162.76
Logical reads: 15,223.37 147,771.73
Block changes: 198.12 1,923.15
Physical reads: 47.02 456.37
Physical writes: 7.05 68.45
User calls: 50.01 485.42
Parses: 25.99 252.26
Hard parses: 0.24 2.38
Sorts: 3.40 33.00
Logons: 0.02 0.16
Executes: 34.64 336.27
Transactions: 0.10
% Blocks changed per Read: 1.30 Recursive Call %: 27.05
Rollback per transaction %: 33.70 Rows per Sort: 1532.57
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 100.00 Redo NoWait %: 100.00
Buffer Hit %: 99.69 In-memory Sort %: 100.00
Library Hit %: 99.38 Soft Parse %: 99.06
Execute to Parse %: 24.98 Latch Hit %: 100.00
Parse CPU to Parse Elapsd %: 48.39 % Non-Parse CPU: 99.53
Shared Pool Statistics Begin End
Memory Usage %: 94.56 94.19
% SQL with executions>1: 74.01 62.51
% Memory for SQL w/exec>1: 52.89 54.29
Top 5 Timed Events
~~~~~~~~~~~~~~~~~~ % Total
Event Waits Time (s) Ela Time
CPU time 895 48.10
db file sequential read 195,597 443 23.83
log file parallel write 1,706 260 13.97
log buffer space 415 122 6.54
control file parallel write 2,074 66 3.53
Wait Events for DB: UAT Instance: UAT Snaps: 2 -3
-> 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 sequential read 195,597 0 443 2 306.6
log file parallel write 1,706 0 260 152 2.7
log buffer space 415 0 122 293 0.7
control file parallel write 2,074 0 66 32 3.3
log file sync 678 4 51 75 1.1
db file scattered read 6,608 0 21 3 10.4
log file switch completion 9 0 2 208 0.0
SQL*Net more data to client 24,072 0 1 0 37.7
log file single write 18 0 0 19 0.0
db file parallel read 9 0 0 13 0.0
control file sequential read 928 0 0 0 1.5
SQL*Net break/reset to clien 292 0 0 0 0.5
latch free 25 2 0 3 0.0
log file sequential read 18 0 0 2 0.0
LGWR wait for redo copy 37 0 0 0 0.1
direct path read 45 0 0 0 0.1
direct path write 45 0 0 0 0.1
SQL*Net message from client 308,861 0 30,960 100 484.1
SQL*Net more data from clien 26,217 0 3 0 41.1
SQL*Net message to client 308,867 0 0 0 484.1
Background Wait Events for DB: UAT Instance: UAT Snaps: 2 -3
-> 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 1,706 0 260 152 2.7
control file parallel write 2,074 0 66 32 3.3
log buffer space 10 0 1 149 0.0
db file scattered read 90 0 1 7 0.1
db file sequential read 104 0 1 5 0.2
log file single write 18 0 0 19 0.0
control file sequential read 876 0 0 0 1.4
log file sequential read 18 0 0 2 0.0
latch free 4 2 0 9 0.0
LGWR wait for redo copy 37 0 0 0 0.1
direct path read 45 0 0 0 0.1
direct path write 45 0 0 0 0.1
rdbms ipc message 7,222 5,888 21,416 2965 11.3
pmon timer 2,079 2,079 6,044 2907 3.3
smon timer 21 21 6,002 ###### 0.0
Instance Activity Stats for DB: UAT Instance: UAT Snaps: 2 -3
Statistic Total per Second per Trans
CPU used by this session 89,478 14.5 140.3
CPU used when call started 89,478 14.5 140.3
CR blocks created 148 0.0 0.2
DBWR buffers scanned 158,122 25.5 247.8
DBWR checkpoint buffers written 11,909 1.9 18.7
DBWR checkpoints 3 0.0 0.0
DBWR free buffers found 136,228 22.0 213.5
DBWR lru scans 53 0.0 0.1
DBWR make free requests 53 0.0 0.1
DBWR summed scan depth 158,122 25.5 247.8
DBWR transaction table writes 43 0.0 0.1
DBWR undo block writes 19,283 3.1 30.2
SQL*Net roundtrips to/from client 308,602 49.8 483.7
active txn count during cleanout 6,812 1.1 10.7
background checkpoints completed 3 0.0 0.0
background checkpoints started 3 0.0 0.0
background timeouts 7,204 1.2 11.3
branch node splits 4 0.0 0.0
buffer is not pinned count 35,587,689 5,746.4 55,780.1
buffer is pinned count 202,539,737 32,704.6 317,460.4
bytes received via SQL*Net from c 106,536,068 17,202.7 166,984.4
bytes sent via SQL*Net to client 98,286,059 15,870.5 154,053.4
calls to get snapshot scn: kcmgss 346,517 56.0 543.1
calls to kcmgas 42,563 6.9 66.7
calls to kcmgcs 7,735 1.3 12.1
change write time 12,666 2.1 19.9
cleanout - number of ktugct calls 9,698 1.6 15.2
cleanouts and rollbacks - consist 0 0.0 0.0
cleanouts only - consistent read 1,161 0.2 1.8
cluster key scan block gets 15,789 2.6 24.8
cluster key scans 6,534 1.1 10.2
commit cleanout failures: block l 199 0.0 0.3
commit cleanout failures: buffer 69 0.0 0.1
commit cleanout failures: callbac 0 0.0 0.0
commit cleanouts 40,688 6.6 63.8
commit cleanouts successfully com 40,420 6.5 63.4
commit txn count during cleanout 4,652 0.8 7.3
consistent changes 150 0.0 0.2
consistent gets 93,071,913 15,028.6 145,880.7
consistent gets - examination 1,487,526 240.2 2,331.6
cursor authentications 322 0.1 0.5
data blocks consistent reads - un 51 0.0 0.1
db block changes 1,226,967 198.1 1,923.2
db block gets 1,206,448 194.8 1,891.0
deferred (CURRENT) block cleanout 13,478 2.2 21.1
dirty buffers inspected 9,876 1.6 15.5
enqueue conversions 41 0.0 0.1
enqueue releases 12,783 2.1 20.0
enqueue requests 12,785 2.1 20.0
enqueue waits 0 0.0 0.0
execute count 214,538 34.6 336.3
free buffer inspected 9,879 1.6 15.5
free buffer requested 349,615 56.5 548.0
hot buffers moved to head of LRU 141,298 22.8 221.5
immediate (CR) block cleanout app 1,161 0.2 1.8
immediate (CURRENT) block cleanou 23,894 3.9 37.5
Instance Activity Stats for DB: UAT Instance: UAT Snaps: 2 -3
Statistic Total per Second per Trans
index fast full scans (full) 19 0.0 0.0
index fetch by key 671,512 108.4 1,052.5
index scans kdiixs1 56,328,309 9,095.5 88,288.9
leaf node 90-10 splits 16 0.0 0.0
leaf node splits 2,187 0.4 3.4
logons cumulative 105 0.0 0.2
messages received 1,653 0.3 2.6
messages sent 1,653 0.3 2.6
no buffer to keep pinned count 0 0.0 0.0
no work - consistent read gets 35,118,594 5,670.7 55,044.8
opened cursors cumulative 4,036 0.7 6.3
parse count (failures) 43 0.0 0.1
parse count (hard) 1,516 0.2 2.4
parse count (total) 160,939 26.0 252.3
parse time cpu 421 0.1 0.7
parse time elapsed 870 0.1 1.4
physical reads 291,165 47.0 456.4
physical reads direct 45 0.0 0.1
physical writes 43,672 7.1 68.5
physical writes direct 45 0.0 0.1
physical writes non checkpoint 41,379 6.7 64.9
pinned buffers inspected 3 0.0 0.0
prefetched blocks 88,896 14.4 139.3
prefetched blocks aged out before 22 0.0 0.0
process last non-idle time 75,777 12.2 118.8
recursive calls 114,829 18.5 180.0
recursive cpu usage 11,704 1.9 18.3
redo blocks written 275,521 44.5 431.9
redo buffer allocation retries 419 0.1 0.7
redo entries 623,735 100.7 977.6
redo log space requests 10 0.0 0.0
redo log space wait time 192 0.0 0.3
redo ordering marks 3 0.0 0.0
redo size 277,633,840 44,830.3 435,162.8
redo synch time 5,185 0.8 8.1
redo synch writes 675 0.1 1.1
redo wastage 818,952 132.2 1,283.6
redo write time 26,562 4.3 41.6
redo writes 1,705 0.3 2.7
rollback changes - undo records a 395 0.1 0.6
rollbacks only - consistent read 49 0.0 0.1
rows fetched via callback 553,910 89.4 868.2
session connect time 74,797 12.1 117.2
session logical reads 94,278,361 15,223.4 147,771.7
session pga memory 2,243,808 362.3 3,516.9
session pga memory max 1,790,880 289.2 2,807.0
session uga memory 2,096,104 338.5 3,285.4
session uga memory max 32,637,856 5,270.1 51,156.5
shared hash latch upgrades - no w 56,430,882 9,112.0 88,449.7
sorts (memory) 21,055 3.4 33.0
sorts (rows) 32,268,330 5,210.5 50,577.3
summed dirty queue length 53,238 8.6 83.5
switch current to new buffer 37,071 6.0 58.1
table fetch by rowid 90,385,043 14,594.7 141,669.4
table fetch continued row 104,336 16.9 163.5
table scan blocks gotten 376,181 60.7 589.6
Instance Activity Stats for DB: UAT Instance: UAT Snaps: 2 -3
Statistic Total per Second per Trans
table scan rows gotten 5,103,693 824.1 7,999.5
table scans (long tables) 97 0.0 0.2
table scans (short tables) 53,485 8.6 83.8
transaction rollbacks 247 0.0 0.4
user calls 309,698 50.0 485.4
user commits 423 0.1 0.7
user rollbacks 215 0.0 0.3
workarea executions - opt 37,753 6.1 59.2
write clones created in foregroun 718 0.1 1.1
Tablespace IO Stats for DB: UAT Instance: UAT Snaps: 2 -3
->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)
USERS
200,144 32 2.3 1.4 22,576 4 0 0.0
UNDOTBS1
38 0 9.5 1.0 19,348 3 0 0.0
SYSTEM
2,016 0 4.7 1.5 505 0 0 0.0
TOOLS
14 0 9.3 1.3 1,237 0 0 0.0
IMAGES
3 0 6.7 1.0 3 0 0 0.0
INDX
3 0 6.7 1.0 3 0 0 0.0
Buffer Pool Statistics for DB: UAT Instance: UAT Snaps: 2 -3
-> Standard block size Pools D: default, K: keep, R: recycle
-> Default Pools for other block sizes: 2k, 4k, 8k, 16k, 32k
Free Write Buffer
Number of Cache Buffer Physical Physical Buffer Complete Busy
P Buffers Hit % Gets Reads Writes Waits Waits Waits
D 49,625 99.7 94,278,286 291,074 43,627 0 0 0
Instance Recovery Stats for DB: UAT Instance: UAT Snaps: 2 -3
-> 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 38 9 2311 13283 13021 92160 13021
E 38 7 899 4041 3767 92160 3767
Buffer Pool Advisory for DB: UAT Instance: UAT End Snap: 3
-> Only rows with estimated physical reads >0 are displayed
-> ordered by Block Size, Buffers For Estimate (default block size first)
Size for Size Buffers for Est Physical Estimated
P Estimate (M) Factr Estimate Read Factor Physical Reads
D 32 .1 3,970 2.94 2,922,389
D 64 .2 7,940 2.54 2,524,222
D 96 .2 11,910 2.38 2,365,570
D 128 .3 15,880 2.27 2,262,338
D 160 .4 19,850 2.19 2,183,287
D 192 .5 23,820 1.97 1,962,758
D 224 .6 27,790 1.30 1,293,415
D 256 .6 31,760 1.21 1,203,737
D 288 .7 35,730 1.10 1,096,115
D 320 .8 39,700 1.06 1,056,077
D 352 .9 43,670 1.04 1,036,708
D 384 1.0 47,640 1.02 1,012,912
D 400 1.0 49,625 1.00 995,426
D 416 1.0 51,610 0.99 982,641
D 448 1.1 55,580 0.97 966,874
D 480 1.2 59,550 0.89 890,749
D 512 1.3 63,520 0.88 879,062
D 544 1.4 67,490 0.87 864,539
D 576 1.4 71,460 0.80 800,284
D 608 1.5 75,430 0.76 756,222
D 640 1.6 79,400 0.75 749,473
PGA Aggr Target Stats for DB: UAT Instance: UAT Snaps: 2 -3
-> B: Begin snap E: End snap (rows dentified with B or E contain data
which is absolute i.e. not diffed over the interval)
-> PGA cache hit % - percentage of W/A (WorkArea) data processed only in-memory
-> 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 Cache Hit % W/A MB Processed Extra W/A MB Read/Written
100.0 851 0
%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 320 282 12.6 0.0 .0 .0 .0 16,384
E 320 281 15.3 0.0 .0 .0 .0 16,384
PGA Aggr Target Histogram for DB: UAT Instance: UAT Snaps: 2 -3
-> Opt Executions are purely in-memory operations
Low High
Opt Opt Total Execs Opt Execs 1-Pass Execs M-Pass Execs
8K 16K 37,010 37,010 0 0
16K 32K 70 70 0 0
32K 64K 11 11 0 0
64K 128K 34 34 0 0
128K 256K 9 9 0 0
256K 512K 54 54 0 0
512K 1024K 536 536 0 0
1M 2M 7 7 0 0
2M 4M 24 24 0 0
PGA Memory Advisory for DB: UAT Instance: UAT End Snap: 3
-> When using Auto Memory Mgmt, minly 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
40 0.1 3,269.7 98.2 97.0 0
80 0.3 3,269.7 9.6 100.0 0
160 0.5 3,269.7 9.6 100.0 0
240 0.8 3,269.7 0.0 100.0 0
320 1.0 3,269.7 0.0 100.0 0
384 1.2 3,269.7 0.0 100.0 0
448 1.4 3,269.7 0.0 100.0 0
512 1.6 3,269.7 0.0 100.0 0
576 1.8 3,269.7 0.0 100.0 0
640 2.0 3,269.7 0.0 100.0 0
960 3.0 3,269.7 0.0 100.0 0
1,280 4.0 3,269.7 0.0 100.0 0
1,920 6.0 3,269.7 0.0 100.0 0
2,560 8.0 3,269.7 0.0 100.0 0
-------------------------------------------------------------Rollback Segment Stats for DB: UAT Instance: UAT Snaps: 2 -3
->A high value for "Pct Waits" suggests more rollback segments may be required
->RBS stats may not be accurate between begin and end snaps when using Auto Undo
managment, as RBS may be dynamically created and dropped as needed
Trans Table Pct Undo Bytes
RBS No Gets Waits Written Wraps Shrinks Extends
0 22.0 0.00 0 0 0 0
1 650.0 0.00 1,868,300 0 0 0
2 1,987.0 0.00 4,613,768 9 0 7
3 6,070.0 0.00 24,237,494 37 0 36
4 223.0 0.00 418,942 3 0 1
5 621.0 0.00 1,749,086 11 0 11
6 8,313.0 0.00 48,389,590 54 0 52
7 7,248.0 0.00 14,477,004 19 0 17
8 1,883.0 0.00 12,332,646 14 0 12
9 2,729.0 0.00 17,820,450 19 0 19
10 1,009.0 0.00 2,857,150 5 0 3
Rollback Segment Storage for DB: UAT Instance: UAT Snaps: 2 -3
->Opt Size should be larger than Avg Active
RBS No Segment Size Avg Active Opt Size Maximum Size
0 450,560 0 450,560
1 8,511,488 6,553 8,511,488
2 8,511,488 4,592,363 18,997,248
3 29,351,936 14,755,792 29,483,008
4 2,220,032 105,188 2,220,032
5 3,137,536 3,416,104 54,648,832
6 55,697,408 21,595,184 55,697,408
7 26,337,280 9,221,107 26,337,280
8 13,754,368 5,142,374 13,754,368
9 22,011,904 10,220,526 22,011,904
10 4,317,184 3,810,892 13,754,368
Undo Segment Summary for DB: UAT Instance: UAT Snaps: 2 -3
-> 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 Snapshot Out of uS/uR/uU/
TS# Blocks Trans Len (s) Concurcy Too Old Space eS/eR/eU
1 19,305 109,683 648 3 0 0 0/0/0/0/0/0
Undo Segment Stats for DB: UAT Instance: UAT Snaps: 2 -3
-> ordered by Time desc
Undo Num Max Qry Max Tx Snap Out of uS/uR/uU/
End Time Blocks Trans Len (s) Concy Too Old Space eS/eR/eU
15-Jul 12:32 10 13,451 3 2 0 0 0/0/0/0/0/0
15-Jul 12:22 87 13,384 6 1 0 0 0/0/0/0/0/0
15-Jul 12:12 3,746 13,229 91 1 0 0 0/0/0/0/0/0
15-Jul 12:02 8,949 13,127 648 1 0 0 0/0/0/0/0/0
15-Jul 11:52 1,496 10,476 24 1 0 0 0/0/0/0/0/0
15-Jul 11:42 3,895 10,441 6 1 0 0 0/0/0/0/0/0
15-Jul 11:32 531 9,155 1 3 0 0 0/0/0/0/0/0
15-Jul 11:22 0 8,837 3 0 0 0 0/0/0/0/0/0
15-Jul 11:12 4 8,817 3 1 0 0 0/0/0/0/0/0
15-Jul 11:02 587 8,766 2 2 0 0 0/0/0/0/0/0
Latch Activity for DB: UAT Instance: UAT Snaps: 2 -3
->"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 Requests Miss /Miss (s) Requests Miss
Consistent RBA 1,708 0.0 0 0
FIB s.o chain latch 40 0.0 0 0
FOB s.o list latch 467 0.0 0 0
SQL memory manager latch 1 0.0 0 2,038 0.0
SQL memory manager worka 174,015 0.0 0 0
active checkpoint queue 2,081 0.0 0 0
archive control 1 0.0 0 0
cache buffer handles 162,618 0.0 0 0
cache buffers chains 190,111,507 0.0 0.2 0 426,778 0.0
cache buffers lru chain 425,142 0.0 0.2 0 65,895 0.0
channel handle pool latc 202 0.0 0 0
channel operations paren 4,405 0.0 0 0
checkpoint queue latch 228,932 0.0 0.0 0 41,321 0.0
child cursor hash table 18,320 0.0 0 0
commit callback allocati 4 0.0 0 0
dml lock allocation 2,482 0.0 0 0
dummy allocation 204 0.0 0 0
enqueue hash chains 25,615 0.0 0 0
enqueues 15,416 0.0 0 0
event group latch 104 0.0 0 0
hash table column usage 410 0.0 0 191,319 0.0
internal temp table obje 1,048 0.0 0 0
job_queue_processes para 103 0.0 0 0
ktm global data 21 0.0 0 0
lgwr LWN SCN 3,215 0.0 0.0 0 0
library cache 1,657,451 0.0 0.0 0 1,479 0.1
library cache load lock 1,126 0.0 0 0
library cache pin 1,112,420 0.0 0.0 0 0
library cache pin alloca 670,952 0.0 0.0 0 0
list of block allocation 2,748 0.0 0 0
loader state object free 36 0.0 0 0
longop free list parent 1 0.0 0 1 0.0
messages 19,427 0.0 0 0
mostly latch-free SCN 3,229 0.3 0.0 0 0
multiblock read objects 15,022 0.0 0 0
ncodef allocation latch 99 0.0 0 0
object stats modificatio 28 0.0 0 0
post/wait queue 1,810 0.0 0 1,102 0.0
process allocation 202 0.0 0 104 0.0
process group creation 202 0.0 0 0
redo allocation 629,175 0.0 0.0 0 0
redo copy 0 0 623,865 0.0
redo writing 11,487 0.0 0 0
row cache enqueue latch 197,626 0.0 0 0
row cache objects 201,089 0.0 0 642 0.0
sequence cache 348 0.0 0 0
session allocation 3,634 0.1 0.0 0 0
session idle bit 621,031 0.0 0 0
session switching 99 0.0 0 0
session timer 2,079 0.0 0 0
Latch Activity for DB: UAT Instance: UAT Snaps: 2 -3
->"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 Requests Miss /Miss (s) Requests Miss
shared pool 786,331 0.0 0.1 0 0
sim partition latch 0 0 193 0.0
simulator hash latch 5,885,552 0.0 0 0
simulator lru latch 12,981 0.0 0 66,129 0.0
sort extent pool 120 0.0 0 0
transaction allocation 249 0.0 0 0
transaction branch alloc 99 0.0 0 0
undo global data 27,867 0.0 0 0
user lock 396 0.0 0 0
Latch Sleep breakdown for DB: UAT Instance: UAT Snaps: 2 -3
-> ordered by misses desc
Get Spin &
Latch Name Requests Misses Sleeps Sleeps 1->4
cache buffers lru chain 425,142 82 15 67/15/0/0/0
library cache 1,657,451 76 3 73/3/0/0/0
shared pool 786,331 37 2 35/2/0/0/0
redo allocation 629,175 31 1 30/1/0/0/0
cache buffers chains 190,111,507 21 4 19/0/2/0/0
Latch Miss Sources for DB: UAT Instance: UAT Snaps: 2 -3
-> only latches with sleeps are shown
-> ordered by name, sleeps desc
NoWait Waiter
Latch Name Where Misses Sleeps Sleeps
cache buffers chains kcbget: pin buffer 0 2 0
cache buffers chains kcbgtcr: fast path 0 2 0
cache buffers lru chain kcbbiop: lru scan 2 12 0
cache buffers lru chain kcbbwlru 0 2 0
cache buffers lru chain kcbbxsv: move to being wri 0 1 0
library cache kgllkdl: child: cleanup 0 1 0
library cache kglpin: child: heap proces 0 1 0
library cache kglpndl: child: before pro 0 1 0
redo allocation kcrfwi: more space 0 1 0
shared pool kghalo 0 2 0
------------------------------------------------------------- -
Create statspack report using sql*developer
Hello,
While connecting with PERFSTAT user I can not create statspack report using SQL*Developer:
@?/rdbms/admin/awrrpt
Error starting at line 1 in command:
@?/rdbms/admin/awrrpt
Error report:
Unable to open file: "?/rdbms/admin/awrrpt.sql"
Actually, my problem or question is that how can PERFSTAT user can generate statspack reports from a Client side. What is the other way a non-dba can see the snapshots histroy and generate report (by using perfstat user ) while joing tables or using views?
Thanks a lot.
Best RegardsHi,
for awr reports @?/rdbms/admin/awrrpt (you need EE+Diagnostic Pack) there is a solution.
Grant execute dbms_workload_repository to <user>;
Grant select_catalog_role to <user>;
get all SNAP_IDs
SELECT TO_CHAR(s.startup_time,'YYYY.MM.DD HH24:MI:SS') INSTART_FMT,
di.instance_name INST_NAME,
di.db_name DB_NAME,
s.snap_id SNAP_ID,
TO_CHAR(s.end_interval_time,'YYYY.MM.DD HH24:MI:SS') SNAPDAT,
s.snap_level LVL
FROM dba_hist_snapshot s,
dba_hist_database_instance di
WHERE di.dbid = s.dbid
AND di.instance_number = s.instance_number
AND Di.Startup_Time = S.Startup_Time
ORDER BY snap_id desc;
Select * From Table(Sys.Dbms_Workload_Repository.Awr_Report_Html(DBID, 1, BEGIN_SNAP_ID, END_SNAP_ID));
For statspack i don't know a solutuion. I think the best idea is, create a job to make the statspack report on the server side and access it via external tables or mail them forward to you.
Best regards
Thomas -
Running statspack report remotely from a client?
Hi!
To get a statspack report I run @spreport.sql from an SQL*Plus session on the database server.
Having to go to the DB server for that sometimes is a chore and I would prefer to get a report from any client, or even from within SQL Developer.
Is there an easy way to achive this or is there a tool for that?
Obviously, the spreport.sql might differ from Oracle DB version to version, so I would either need to have a series of these reports scripts on the client and the select the right one or I would need to have some mechanisum (stored proc?) that gets to rdbms/admin on the server, executed the spreport.sql script there, read the output and return that from to the client.
Is there an easier way or anyone knows of a package that will do that?
Thanks,
MarcusMarcus,
I don't think that I did get your question. Sorry but do you mean to say that you want a report from the client terminal , running locally over teh client only? That's what I got from this line,
Having to go to the DB server for that sometimes is a chore and I would prefer to get a report from any client, or even from within SQL Developer. Or do you want the report to be available from the server side to the client's local machine?
If you want the report to be given to you on the client side only, I am not sure that there is any way possibly there. What's the issue in fetching the report from the server though ? If one can connect to db as a valid db and o/s user, he can fetch the data as well. But its just a thought. I don't use any of the tools much so I guess, I shall just join you and see what others have to say about it.
Aman.... -
Hi Guru's
My DB Version:10.2.0.1.0
OS Version: Windows
I want all your experienced advice over my statspack report,regarding the values of Load profile - Hard Parses,executions,transactions
Instance Efficiency percentages: Soft Parse,Buffer Hit,Library Hit. Just want to understand till what value we need to take everything normal and below or above which value we seriously think about the performance tunning:
Load Profile Per Second Per Transaction
~~~~~~~~~~~~ --------------- ---------------
Redo size: 1,636.83 12,142.33
Logical reads: 61.80 458.47
Block changes: 4.26 31.58
Physical reads: 0.17 1.25
Physical writes: 1.23 9.11
User calls: 1.98 14.69
Parses: 5.75 42.62
Hard parses: 0.83 6.13
Sorts: 4.91 36.40
Logons: 0.04 0.31
Executes: 11.25 83.42
Transactions: 0.13
% Blocks changed per Read: 6.89 Recursive Call %: 98.52
Rollback per transaction %: 7.27 Rows per Sort: 6.08
Instance Efficiency Percentages
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 100.00 Redo NoWait %: 100.00
Buffer Hit %: 99.73 In-memory Sort %: 100.00
Library Hit %: 83.57 Soft Parse %: 85.62
Execute to Parse %: 48.91 Latch Hit %: 100.00
Parse CPU to Parse Elapsd %: 96.23 % Non-Parse CPU: 64.71Thanks for all your help in advanceHi,
1) you don't tune to improve "instance efficiencies" or other more or less meaningless numbers. You tune to make a specific performance problem go away. So what is the problem that you are trying to fix?
2) why are you omitting probably the single most useful piece of the statspack report - top timed events?
3) load profile section is most useful when there is some frame of reference, if you know what's normal for the database. We don't have that, so there's not much that can be said except that the database wasn't very busy at the time of the report.
4) please use the code tags
Best regards,
Nikolay -
Hi,
To tune the database i generated statspack report please share me the tips regarding tuning. part of the statspack is given below
STATSPACK report for
DB Name DB Id Instance Inst Num Release OPS Host
PINDB 3730403337 pindb 1 8.1.7.0.0 NO suportal01
Snap Id Snap Time Sessions
Begin Snap: 21 21-Jul-08 13:08:31 210
End Snap: 22 21-Jul-08 13:22:24 210
Elapsed: 13.88 (mins)
Cache Sizes
~~~~~~~~~~~
db_block_buffers: 409600 log_buffer: 163840
db_block_size: 4096 shared_pool_size: 1310720000
Load Profile
~~~~~~~~~~~~ Per Second Per Transaction
Redo size: 42,186.94 5,846.24
Logical reads: 38,625.42 5,352.68
Block changes: 174.36 24.16
Physical reads: 17,187.35 2,381.81
Physical writes: 173.19 24.00
User calls: 163.64 22.68
Parses: 26.36 3.65
Hard parses: 1.23 0.17
Sorts: 13.91 1.93
Logons: 0.27 0.04
Executes: 708.32 98.16
Transactions: 7.22
% Blocks changed per Read: 0.45 Recursive Call %: 80.91
Rollback per transaction %: 0.67 Rows per Sort: #######
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 98.10 Redo NoWait %: 99.97
Buffer Hit %: 55.50 In-memory Sort %: 99.69
Library Hit %: 99.62 Soft Parse %: 95.35
Execute to Parse %: 96.28 Latch Hit %: 99.73
Parse CPU to Parse Elapsd %: 30.23 % Non-Parse CPU: 99.99
Shared Pool Statistics Begin End
Memory Usage %: 83.58 83.11
% SQL with executions>1: 62.74 63.24
% Memory for SQL w/exec>1: 37.31 38.34
STATSPACK report for
DB Name DB Id Instance Inst Num Release OPS Host
PINDB 3730403337 pindb 1 8.1.7.0.0 NO suportal01
Snap Id Snap Time Sessions
Begin Snap: 21 21-Jul-08 13:08:31 210
End Snap: 22 21-Jul-08 13:22:24 210
Elapsed: 13.88 (mins)
Cache Sizes
~~~~~~~~~~~
db_block_buffers: 409600 log_buffer: 163840
db_block_size: 4096 shared_pool_size: 1310720000
Load Profile
~~~~~~~~~~~~ Per Second Per Transaction
Redo size: 42,186.94 5,846.24
Logical reads: 38,625.42 5,352.68
Block changes: 174.36 24.16
Physical reads: 17,187.35 2,381.81
Physical writes: 173.19 24.00
User calls: 163.64 22.68
Parses: 26.36 3.65
Hard parses: 1.23 0.17
Sorts: 13.91 1.93
Logons: 0.27 0.04
Executes: 708.32 98.16
Transactions: 7.22
% Blocks changed per Read: 0.45 Recursive Call %: 80.91
Rollback per transaction %: 0.67 Rows per Sort: #######
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 98.10 Redo NoWait %: 99.97
Buffer Hit %: 55.50 In-memory Sort %: 99.69
Library Hit %: 99.62 Soft Parse %: 95.35
Execute to Parse %: 96.28 Latch Hit %: 99.73
Parse CPU to Parse Elapsd %: 30.23 % Non-Parse CPU: 99.99
Shared Pool Statistics Begin End
Memory Usage %: 83.58 83.11
% SQL with executions>1: 62.74 63.24
% Memory for SQL w/exec>1: 37.31 38.34
Buffer Pool Statistics for DB: PINDB Instance: pindb Snaps: 21 -22
-> Pools D: default pool, K: keep pool, R: recycle pool
Free Write Buffer
Buffer Consistent Physical Physical Buffer Complete Busy
P Gets Gets Reads Writes Waits Waits Waits
D 14,233,242 0 14,216,020 39,539 0 0 612,534
Buffer wait Statistics for DB: PINDB Instance: pindb Snaps: 21 -22
-> ordered by wait time desc, waits desc
Tot Wait Avg
Class Waits Time (cs) Time (cs)
data block 611,175 0 0
undo header 2 0 0
Enqueue activity for DB: PINDB Instance: pindb Snaps: 21 -22
-> ordered by waits desc, gets desc
Enqueue Gets Waits
TX 7,173 4Thanks
Prakash
Message was edited by:
user612485Hi,
Your Buffer it ratio at that time is 55.50%, close to 85% should be good.>>>can i increase db_block_buffers for this
Parse CPU to Parse Elapsd %: 30.23, only 30% of your sql statements are shared, you need to change the cursor_sharing to ( force or similar) and the application code as well to potentatially use less literal variables>>>>since it is oracle 8.1.7.0.0. cursor_sharing=force is not available and i discuss with the developers regarding that.suppose if i make cursor_sharing=exact(default) to similar is it impact on execution plan of the queries.
shared pool Memory Usage %: 83.58 >>>>>>>>>>>>>>shall i increase shared_pool_size
Regards
Prakash
Message was edited by:
user612485 -
How to analyze statspack report
Is there any book I can read to understand how to deal with the sp report ?
I know how to read part of it ,
what I need is something that guide what I can do when I see that wait event X is too high.
for exmaple , if dc_constraints is too high , what do I have to change ?
not only that , I have to analyze the rest of the report , I see how can we improve performance .
Thanks .Hi,
how to analyze the reportWell, I have my notes here:
http://www.dba-oracle.com/t_reading_statspack_report.htm
Also, you can paste-in a STATSPACK report into http://www.statspackanalyzer.com and learn how to analyse a STATSPACK report.
There are several Oracle Press books on STATSPACK, you may find useful:
http://www.amazon.com/Oracle9i-High-Performance-Tuning-STATSPACK-Burleson/dp/007222360X
Hope this helps. . .
Donald K. Burleson
Oracle Press author
Author of "Oracle Tuning: The Definitive Reference":
http://www.dba-oracle.com/bp/s_oracle_tuning_book.htm -
Statspack report - Buffer Busy Waits on TEMP
I am trying to analyze a statspack report that covers an hour of production time when there was a lot of queries taking an unusally long time (2-3 min instead of < 1.5 seconds), this slow down was seen for about 30 minutes during that hour.
The unusall thing I am seeing is buffer busy waits on the TEMP tablespace and it looks like most of them are on the "file header block" for which I can't find any documentation on. There was only 13 disk sorts in this one hour so any ideas on why/how was the TEMP tablespace or just it's file header block so heavily used?
Here are some of the relevant secions of the statspack report. Thanks in advance for any help.
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 100.00 Redo NoWait %: 100.00
Buffer Hit %: 100.00 In-memory Sort %: 99.99
Library Hit %: 99.67 Soft Parse %: 99.54
Execute to Parse %: 1.13 Latch Hit %: 99.92
Parse CPU to Parse Elapsd %: 91.39 % Non-Parse CPU: 98.91
Top 5 Timed Events
~~~~~~~~~~~~~~~~~~ % Total
Event Waits Time (s) Ela Time
buffer busy waits--------------------------3,569------8,206--------35.76
CPU time-------------------------------------------------4,416------19.25
log file sync-----------------------------------34,024----3,779------16.47
direct path write------------------------------3,150------ 3,283--------14.31
log file parallel write--------------------------26,069-----1,100---------4.80
Tablespace
Av Av Av Av Buffer Av Buf
Reads Reads/s Rd(ms) Blks/Rd Writes Writes/s Waits Wt(ms)
OURAPP
---------81,928 ----23 ---1.3 ----1.4---------20,562---- 6-----------532---13.7
UNDOTBS1
---------13------------0 ---3.1------1.0---------15,801----4-----------219-----4.8
TEMP
--------2,979---------1----86.0----12.8--------3,240-----1-----------2,782-----######
SYSTEM
---------19------------ 0 ---5.3------1.0 --------2,372-----1-----------35-----1.1
Buffer wait Statistics for DB
-> ordered by wait time desc, waits desc
Tot Wait Avg
Class Waits Time (s) Time (ms)
file header block ----2,781---8,393-------3,018
data block----------- 538--------7----------- 14
undo header--------- 91--------1----------- 11
undo block ----------128--------0----------- 0
segment header ---- 26------- 0----------- 0We do have Diagnostic pack license but in this situation how can i generate AWR report for Standby(Active Dataguard) ? Hence we have scheduled Statspack in Cronjob on Primary which connects to Standby and take snapshots.
I have used ASH on Standby(Active Dataguard) since it resides in Standby memory. At the same time i cannot take ASH report for standby since it fetches it from AWR ASH(DBA_HIST_ACTIVE_SESS_HISTORY) of Primary.
SQL> select tablespace_name,file_name,bytes/1024/1024 MB from dba_data_files where tablespace_name like 'UNDOTBS%';
TABLESPACE_NAME FILE_NAME MB
UNDOTBS1 /s01/p15/p15_undotbs101.dbf 10240
UNDOTBS2 /s01/p15/p15_undotbs201.dbf 10240Please let me know if you need any more information. -
Understanding statspack report(CPU time in top time events)
Hi,
I am using oracle 9.2.0.8 RAC on SUN solaris platform.I am trying to understand my DB statistics using the below statspack report.Can you please coment on the below report
My quetions/thoughts are:
1) CPU time is in the top timed events,Is that eman some need to do with CPU increase.Was CPU bottleneck?
2) Parse CPU to Parse Elapsd %: 80.28 .Is this means I am hard parsing most of the time.How can identify which queries doing more hard parses.what is mean by% Non-Parse CPU: 98.76
3) Memory Usage %: 96.25 96.64.It seems to be there is too much memory usage.Can you elaborate this usage about what could be the reasons for this to happen
4) global cache cr request is coming in the top wait evetns and top timed events.Is there some issue with RAC?
5) can you please explain about 5 CR Blocks Served (RAC) and 5 CU Blocks Served (RAC) and Top 5 ITL Waits per
Your help is appreciated!!
Load Profile
~~~~~~~~~~~~ Per Second Per Transaction
Redo size: 2,101,521.49 18,932.15
Logical reads: 91,525.82 824.54
Block changes: 6,720.68 60.55
Physical reads: 5,644.92 50.85
Physical writes: 464.97 4.19
User calls: 922.79 8.31
Parses: 342.37 3.08
Hard parses: 1.52 0.01
Sorts: 324.18 2.92
Logons: 2.66 0.02
Executes: 2,131.75 19.20
Transactions: 111.00
% Blocks changed per Read: 7.34 Recursive Call %: 78.48
Rollback per transaction %: 22.43 Rows per Sort: 15.89
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 99.66 Redo NoWait %: 100.00
Buffer Hit %: 93.86 In-memory Sort %: 100.00
Library Hit %: 99.95 Soft Parse %: 99.56
Execute to Parse %: 83.94 Latch Hit %: 99.79
Parse CPU to Parse Elapsd %: 80.28 % Non-Parse CPU: 98.76
Shared Pool Statistics Begin End
Memory Usage %: 96.25 96.64
% SQL with executions>1: 34.19 32.67
% Memory for SQL w/exec>1: 39.87 40.47
Top 5 Timed Events
~~~~~~~~~~~~~~~~~~ % Total
Event Waits Time (s) Ela Time
CPU time 10,406 42.54
db file sequential read 1,707,372 4,282 17.51
global cache cr request 2,566,822 2,369 9.68
db file scattered read 1,109,892 1,719 7.03
SQL*Net break/reset to client 17,287 1,348 5.51
Wait Events for DB: Instance:
-> 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 sequential read 1,707,372 0 4,282 3 8.5
global cache cr request 2,566,822 3,356 2,369 1 12.8
db file scattered read 1,109,892 0 1,719 2 5.5
SQL*Net break/reset to clien 17,287 0 1,348 78 0.1
buffer busy waits 312,198 11 1,082 3 1.6
Message was edited by:
user509266This statspack taken for 30 minutes interval.We have 16 CPU's.We never got ORA-4031 errors.It means you have 16 * 30 * 60 = 28,800 seconds CPU available during the interval but you only used 10,406. So you don't have a CPU problem.
For Statspack documentation, you can have a look to <ORACLE_HOME>/rdbms/admin/spdoc.txt, Metalink note 228913.1, Jonathan Lewis Scratchpad, books commended by Rajesh Kumar Yogi and also to http://www.oracle.com/technology/deploy/performance/index.html -
dear all
i want a detail study of my statspack report
i am referring to these link right now but i need a detail study of my report with each and every section covering all
Statspack report analysis
http://www.evdbt.com/TGorman_SYM06_SP_DW.doc
CHeersIt wont be possible that someone would read and analyze your whole report here, a specific issue may be taken and analyzed.
Besides the link which Yingkuan mentioned, you may take the help of this too,
http://www.akadia.com/services/ora_statspack_survival_guide.html
HTH
Aman....
Edited by: Aman.... on Sep 24, 2008 11:11 AM
Sac: Sorry for duplicate link. I didnt see your post. -
Statspack Report Parse calls to Executions question ?
Hi , all:
In my statspack report , in the session of "SQL ordered by Parse Calls" , I have many sql statments which parse calls is equal to the Executions . Does this mean every execution will need the parse , so this will be influence the performance ? anybody can give me some ideas about this . Thanks !
% Total
Parse Calls Executions Parses Hash Value
76,598 76,597 81.49 1378068235
Module: JDBC Thin Client
BEGIN p_test.p_insert (:1,:2,:3,:4,:5,:6,:7,:8,:9,
:10,:11,:12,:13,:14,:15,:16,:17); END;Thanks !
the following is my statspack top 5 event :
Top 5 Timed Events
~~~~~~~~~~~~~~~~~~ % Total
Event Waits Time (s) Ela Time
CPU time 2,723 69.19
db file sequential read 798,708 669 16.99
PX Deq: Execute Reply 553 244 6.20
db file scattered read 291,862 148 3.75
PX Deq Credit: send blkd 157,205 51 1.30
But , i am very surprised why the excutions to parse calls is near 1:1 . For example :
% Total
Parse Calls Executions Parses Hash Value
14,322 14,322 56.84 707089597
Module: JDBC Thin Client
BEGIN p_eed.p_insert (:1,:2,:3,:4,:5,:6,:7,:8,:9,:10,
:11,:12,:13,:14,:15,:16,:17,:18,:19,:20,:21,:22,:23,:24,:25,:26,
:27,:28,:29,:30); END;
And from the above , we can see the statment have already used the bind parameter . Is something wrong ? -
StatsPack Report Top 5 Timed Events
Here is my StatsPack report , The 1st one is base line, Performance looks nice here , but in 2nd and 3rd its not good. Need suggestion , what this reprot mean. and what should i do next.
Cache Sizes (end)
~~~~~~~~~~~~~~~~~
Buffer Cache: 1,920M Std Block Size: 16K
Shared Pool Size: 304M Log Buffer: 20,480K
Performance is good here
Top 5 Timed Events
~~~~~~~~~~~~~~~~~~ % Total
Event Waits Time (s) Ela Time
enqueue 15,551 25,630 41.78
db file sequential read 1,281,988 10,205 16.64
CPU time 7,781 12.68
log file sync 325,921 6,482 10.57
buffer busy waits 199,959 2,591 4.22
Performance is not good here
Top 5 Timed Events
~~~~~~~~~~~~~~~~~~ % Total
Event Waits Time (s) Ela Time
db file sequential read 1,180,605 10,883 23.99
CPU time 8,012 17.66
log file sync 365,098 7,788 17.17
enqueue 8,906 6,413 14.13
db file scattered read 137,606 2,930 6.46
Top 5 Timed Events
~~~~~~~~~~~~~~~~~~ % Total
Event Waits Time (s) Ela Time
enqueue 14,413 18,029 27.04
db file sequential read 1,281,801 12,383 18.57
CPU time 10,002 15.00
log file sync 356,982 8,488 12.73
row cache lock 1,765 3,510 5.27>
Top 5 Timed Events
~~~~~~~~~~~~~~~~~~ % Total
Event Waits Time (s) Ela Time
> enqueue 14,413 18,029 27.04> db file sequential read 1,281,801 12,383 18.57
CPU time 10,002 15.00
log file sync 356,982 8,488 12.73
> row cache lock 1,765 3,510 5.27
buffer busy waits 199,959 2,591 4.22
Look into these events, enqueue, row cache lock, buffer busy wait
select * from V$ENQUEUE_STAT
to find out which enqueue the database has been waiting on.
The three events could be related.
Most likely you have one/some hot objects that a lot queries updating on at the same time.
also check
v$session_wait
when you have the performance issue to find out the hot objects.
Maybe you are looking for
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