Latch wait
Hi ,
I have Oracle (10.1.0.5) on hp-ux i have upgrade to 10.2.0.5 after the upgrade i have face a performance issue.
The CPU utilization is full and the database is very slow . After generate the AWR report i have notice that the top wait is (latch free) .
The latch name causing the issue is (KFMD SGA) .
Any clue guys ?
See below is part of the AWR
WORKLOAD REPOSITORY report for
=====================================================================================
DB Name DB Id Instance Inst Num Release RAC Host
ECC 829673667 ecc 1 10.2.0.5.0 NO ECCDB
Snap Id Snap Time Sessions Curs/Sess
Begin Snap: 47916 02-May-11 09:00:52 163 17.6
End Snap: 47917 02-May-11 10:00:37 186 21.5
Elapsed: 59.74 (mins)
DB Time: 839.42 (mins)
Cache Sizes
~~~~~~~~~~~ Begin End
Buffer Cache: 2,176M 2,176M Std Block Size: 8K
Shared Pool Size: 1,472M 1,472M Log Buffer: 14,344K
Load Profile
~~~~~~~~~~~~ Per Second Per Transaction
Redo size: 84,463.98 5,920.97
Logical reads: 4,921.93 345.03
Block changes: 280.19 19.64
Physical reads: 71.02 4.98
Physical writes: 15.42 1.08
User calls: 184.49 12.93
Parses: 95.99 6.73
Hard parses: 0.45 0.03
Sorts: 19.96 1.40
Logons: 1.04 0.07
Executes: 1,711.52 119.98
Transactions: 14.27
% Blocks changed per Read: 5.69 Recursive Call %: 96.49
Rollback per transaction %: 6.55 Rows per Sort: 32.88
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 99.91 Redo NoWait %: 99.89
Buffer Hit %: 98.64 In-memory Sort %: 100.00
Library Hit %: 99.89 Soft Parse %: 99.53
Execute to Parse %: 94.39 Latch Hit %: 100.00
Parse CPU to Parse Elapsd %: 15.75 % Non-Parse CPU: 98.66
Shared Pool Statistics Begin End
Memory Usage %: 85.99 93.65
% SQL with executions>1: 93.92 92.64
% Memory for SQL w/exec>1: 92.06 89.99 25675
Top 5 Timed Events Avg %Total
~~~~~~~~~~~~~~~~~~ wait Call
Event Waits Time (s) (ms) Time Wait Class
latch free 2,540 25,679 10110 51.0 Other
db file sequential read 19,834 12,956 653 25.7 User I/O
log file sync 76,489 9,199 120 18.3 Commit
CPU time 3,267 6.5
CSS operation: query 2,778 2,900 1044 5.8 Other
Hi ,
I read the note and i will implement it its very close to the case i have.
But i have one question regarding this note.
I have to run this command as root (ASM_ORACLE_HOME/bin/localconfig delete ) as mentioned in the note .
The other command ($ASM_ORACLE_HOME/bin/localconfig add) but the note didnot specify if this command should be run as root or oracle user?
Regards
Fadi Lafi
Similar Messages
-
How oracle deal with latch wait posting
I want to know when a long latch release,according to latch wait posting ,oracle post one process in latch wait list according fifo or post all processes in latch wait list
Edited by: jinyu on Nov 28, 2008 12:02 AMHi,
I think steve dose not agree with metalink's viewFYI, you can ask Steve, he is a nice fellow. He hangs out on Oracle-l:
http://www.freelists.org/archive/oracle-l/recent -
Latch wait list latch에 대해 알고 싶습니다.
슬립상태에 빠진 프로세스가 깨어나는 방법에는 2가지가 있다고 알고 있습니다.
타임아웃이 발생해서 깨어나는 방법과 latch wait list 에 등록해놓고 깨어나는 방법이 있는데 9i 까지는 latch wait list를 보호하기 위한 별도의 latch인 latch wait list latch가 있다고 알고 있습니다.
이래치에 대한 정보와 10g부터는 이래치가 사라졌는데 latch wait list를 어떤 방법으로 보호하는지 알고 싶습니다.
열심히 찾아봐도 관련 자료 찾기가 쉽지 않습니다.
능력은 안되지만 오라클에 대한 열정만큼은 크고 열심히 하려고 노력중입니다.
이틀전에 OCM 시험에 도전했는데 실수와 준비가 부족해서 합격은 힘들것 같네요.
오라클을 먼저 시작하신 선배님들의 도움 부탁드립니다.latch wait posing에 대한 oracle internal 책의 번역자료를 보시면 답변이 될 것
같습니다.
Latch Wait Posting
프로세스가 willing-to-wait mode로 요구한 latch 획득에 실패하며 sleep으로 빠지기 전에 자기 스스로 wake up할 수 있는 방법 중 두번째 메카니즘은 latch wait posting이다. 이 경우, 요구되어지는 latch를 free하는 프로세스가 sleeping하는 프로세스를 wake up하는 것이다. waiting 프로세스는 sleep하기 전에 latch wait posting를 반드시 요구해야 하며 이것은 포스트되어지기를 waiting 프로세스 리스트에 스스로 추가함으로써 가능해지며 이 리스트는 latch wait list라고 불리운다. 한 프로세스가 latch를 free시키고 나면 latch wait list에서 free한 latch를 기다리는 프로세스가 있는지 체크한 후 있다면 waiting 프로세스의 세마포를 포스트한다. 이 작업은 waiting한 프로세스가 실행할 수 있도록 OS가 스케줄링하는 신호를 나타낸다.
Latch wait posting의 장점은 latch free된 후 즉시 waiting 프로세스가 latch를 획득할 수 있다는 점이다. 물론 여기에는 조그마한 비용이 드는데 이것은 latch wait list 데이터 구조를 관리해야 하기 때문이다. 이 데이터 구조는 SGA(X$KSUPR.KSLLALAQ로 보여짐)에 있는 프로세스 테이블을 통한 linked list의 집합으로 구현되어 있다. 이 데이터 구조도 다른 데이터 구조와 마찬가지로 latch에 의해 보호되어 진다. Latch wait list는 상대적으로 길고 따라서 latch wait list latch 또한 오래동안 자주 held 되어진다. 심지어, latch wait posting이 enable되었을때 latch 경함이 심한 경우 latch wait list latch에 대한 부차적인 경합이 나타난다.
Latch wait posting은 디폴트로 library cache와 shared pool latch에 대해서만 enable되어진다. LATCHWAIT_POSTING 파라미터를 0(디폴트는 1)를 세팅하면 모두 disable되고 2로 세팅하면 모두 latch waitng posting이 enable되어진다. Library cache latch 경합이 심하면 latch waiting posting을 disable하는 것이 더 효과적일 것이며, 다른 latch 경합이 보통이라면 latch wait posting을 enable하는 것이 성능에 도움이 될 것이다. 모든 latch에 대하여 latch wait posting을 enable하더라도 cache buffers chaings latch에 대해서는 이 기능을 이용하지 않는다.
V$LATCH 뷰 군에 있는 WAITERS_WORKEN 컬럼은 latch wait posting 메카나즘을 이용하여 wake up한 수를 나타낸다.
OCM이 최근에는 합격선이 낮은 것 같으니 기대해보시지요. -
Hello gurus, i have a problem here with the latch, i already do some suggestion on google to set parameter cursor sharing to force and also make spin_count become 2000, but i still find this problem occurent so often, can u suggest me how to fix that problem?
Regards,
FreddieHere is the spec of my server :
• O/S: HP-UX B.11.11
• Server Type: HP RP8400
• Server Name: DWHETL
• IP : 10.128.1.24
• CPU : 4
• Memory: 16 GB
• Oracle: Oracle 10 r2 patch 4
• Oracle SID: tm1dev (existing)
• Storage: 2 TB External Storage
• Multipath:PVlink
• Volume Management: LVM
The parameter i set are :
- alter system set sga_max_size=8G scope=spfile;
- alter system set sga_target=8G scope=spfile;
- alter system set pga_aggregate_target=4G scope=spfile;-
- alter system set parallel_min_servers=4 scope=spfile;
- alter system set parallel_max_servers=8 scope=spfile;
- alter system set dbwr_io_slaves=8 scope=spfile;
- alter system set open_cursors=500 scope=spfile;
I see the latch problem from the spotlight, there is alarm that my latch wait is high. i have a printscreen about that, how to post a picture in here? -
Hi,
when i were take dinamic view v$latch the following statistics got
name get misses sleep
cache buffers chain 1,239,949,155 3153 12
Library Cache 396,007,245 28289 1
Library Cache Pin 894,591,405 66089 1
Library Cache Pin
Allocation 394,870,329 961 6
is it any contention problem in library cache, plz advice me
best regardsI hate reading numbers that do not line up but a quick eye-ball reading of your numbers do not show any problem. The misses all look to be a small percentage of the gets.
Why do you think you have a latching problem? Have you noticed v$process entries marked as latch waited, or v$session_wait entries that are waiting on latch operations?
HTH -- Mark D Powell -- -
Hi Guys
Please suggest me from which V$ View i can get the max cpu utilized, CPU Wait time, CPU Wait, cause for CPU wait, latch wait in library cache, latch free.
Kindly help me Guys...
Thanks
RamIn V$SYSSTAT and V$SESSTAT you can find the CPU related information ('CPU used when call started','CPU used by this session')
With V$OSSTAT and DBA_CPU_USAGE_STATISTICS you can find the OS level how all the CPU's being used.
In Oracle, the majority of wait time is spent waiting in I/O or performing computations. As we have stressed, CPU enqueues can be observed when the CPU run queue exceeds the number of CPUs on the database server, and this can be seen by looking at the “r” column in the vmstat UNIX/Linux utility or within the Windows performance manager.
If the system is already optimized, having CPU time as a top wait event is a positive because the addition of faster CPUs or more CPUs will relieve the bottleneck.
However, high CPU usage is also indicative of excessive logical I/O (consistent gets ) against the data buffers which might indicate the need for SQL tuning or shared pool and library cache tuning. High CPU usage will be reported as a top 5 timed even in any AWR report as shown below:
Top 5 Timed Events
% Total
Event Waits Time (s) Ela Time
CPU time 4,851 4,042 55.76
db file sequential read 1,968 1,997 27.55
log file sync 299,097 369 5.08
db file scattered read 53,031 330 4.55
log file parallel write 302,680 190 2.62 -
How to interprete Statspack report
Hello all,
I'm new in using statspack and i've tried to run it and gather the report but i can't interprete the result, i mean what can i do, the decisions after reading the report how to inteprete, what part of the result are the essential.
Here is an extract of my statspack report. If someone can help me or any documentations online for this.
STATSPACK report for
DB Name DB Id Instance Inst Num Release OPS Host
QLM3 1443332160 orcl 1 8.1.7.0.0 NO SRVUSINE
Snap Id Snap Time Sessions
Begin Snap: 1 03-Jan-07 15:48:53 57
End Snap: 2 03-Jan-07 15:56:30 57
Elapsed: 7.62 (mins)
Cache Sizes
~~~~~~~~~~~
db_block_buffers: 19200 log_buffer: 163840
db_block_size: 8192 shared_pool_size: 128000000
Load Profile
~~~~~~~~~~~~ Per Second Per Transaction
Redo size: 8,232.78 22,941.34
Logical reads: 11,853.51 33,030.82
Block changes: 41.60 115.91
Physical reads: 145.94 406.67
Physical writes: 36.83 102.62
User calls: 139.75 389.42
Parses: 6.30 17.55
Hard parses: 0.09 0.25
Sorts: 2.23 6.23
Logons: 0.82 2.29
Executes: 87.97 245.13
Transactions: 0.36
% Blocks changed per Read: 0.35 Recursive Call %: 32.96
Rollback per transaction %: 6.71 Rows per Sort: 104.37
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 100.00 Redo NoWait %: 99.90
Buffer Hit %: 98.77 In-memory Sort %: 99.22
Library Hit %: 99.83 Soft Parse %: 98.58
Execute to Parse %: 92.84 Latch Hit %: 100.00
Parse CPU to Parse Elapsd %: 57.07 % Non-Parse CPU: 100.00
Shared Pool Statistics Begin End
Memory Usage %: 88.80 88.08
% SQL with executions>1: 35.12 35.45
% Memory for SQL w/exec>1: 56.60 58.45
Top 5 Wait Events
~~~~~~~~~~~~~~~~~ Wait % Total
Event Waits Time (cs) Wt Time
direct path write 13,024 13,301 38.64
db file sequential read 17,592 8,103 23.54
direct path read 13,514 7,199 20.91
db file scattered read 3,231 2,085 6.06
PX Deq: Txn Recovery Start 8 699 2.03
Wait Events for DB: QLM3 Instance: orcl Snaps: 1 -2
-> cs - centisecond - 100th of a second
-> ms - millisecond - 1000th of a second
-> ordered by wait time desc, waits desc (idle events last)
Avg
Total Wait wait Waits
Event Waits Timeouts Time (cs) (ms) /txn
direct path write 13,024 0 13,301 10 79.4
db file sequential read 17,592 0 8,103 5 107.3
direct path read 13,514 0 7,199 5 82.4
db file scattered read 3,231 0 2,085 6 19.7
PX Deq: Txn Recovery Start 8 3 699 874 0.0
db file parallel write 82 0 656 80 0.5
log file parallel write 348 0 471 14 2.1
control file parallel write 214 0 447 21 1.3
log file sync 256 0 309 12 1.6
control file sequential read 229 0 209 9 1.4
log file switch completion 10 0 205 205 0.1
Wait for stopper event to be 19 17 200 105 0.1
SQL*Net break/reset to clien 74 0 191 26 0.5
file open 1,587 0 122 1 9.7
log buffer space 16 0 115 72 0.1
buffer busy waits 11 0 36 33 0.1
SQL*Net more data to client 3,459 0 35 0 21.1
latch free 68 52 18 3 0.4
file identify 8 0 8 10 0.0
refresh controlfile command 10 0 6 6 0.1
log file sequential read 4 0 4 10 0.0
log file single write 8 0 3 4 0.0
LGWR wait for redo copy 1 0 2 20 0.0
PX Deq: Signal ACK 3 0 1 3 0.0
PX Deq: Join ACK 5 0 0 0 0.0
enqueue 5 0 0 0 0.0
SQL*Net message from client 62,888 0 1,462,717 233 383.5
PX Idle Wait 602 600 124,058 2061 3.7
virtual circuit status 15 15 46,101 30734 0.1
SQL*Net message to client 62,885 0 10 0 383.4
SQL*Net more data from clien 12 0 1 1 0.1
Background Wait Events for DB: QLM3 Instance: orcl Snaps: 1 -2
-> ordered by wait time desc, waits desc (idle events last)
Avg
Total Wait wait Waits
Event Waits Timeouts Time (cs) (ms) /txn
db file parallel write 82 0 656 80 0.5
direct path read 542 0 546 10 3.3
log file parallel write 348 0 471 14 2.1
control file parallel write 214 0 447 21 1.3
Wait for stopper event to be 19 17 200 105 0.1
control file sequential read 176 0 194 11 1.1
file open 1,485 0 50 0 9.1
buffer busy waits 1 0 33 330 0.0
db file scattered read 7 0 16 23 0.0
direct path write 297 0 8 0 1.8
file identify 8 0 8 10 0.0
log file sequential read 4 0 4 10 0.0
log file single write 8 0 3 4 0.0
LGWR wait for redo copy 1 0 2 20 0.0
PX Deq: Signal ACK 3 0 1 3 0.0
db file sequential read 1 0 1 10 0.0
PX Deq: Join ACK 5 0 0 0 0.0
enqueue 1 0 0 0 0.0
rdbms ipc message 1,221 427 134,286 1100 7.4
pmon timer 149 148 45,558 3058 0.9
smon timer 2 1 43,807 ###### 0.0
SQL ordered by Gets for DB: QLM3 Instance: orcl Snaps: 1 -2
-> 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
Buffer Gets Executions Gets per Exec % Total Hash Value
887,405 3,544 250.4 16.4 8985785
SELECT SUM(MVT_QUANTITE) FROM APS_MVT_MOUVEMENTS WHERE PERIOD
E > :b1 AND ARTICLE_ID = :b2 AND STATUT_CODE = :b3 AND REGIME
= :b4 AND MVT_TYPE = 'T' AND MVT_QUANTITE > 0 AND GISEMENT_T
YPE IN ( 'L','F' ) AND MVT_SITE_CODE = :b5
887,405 3,544 250.4 16.4 739720993
SELECT SUM(MVT_QUANTITE) FROM APS_MVT_MOUVEMENTS WHERE PERIOD
E > :b1 AND ARTICLE_ID = :b2 AND STATUT_CODE = :b3 AND REGIME
= :b4 AND MVT_TYPE != 'T' AND MVT_SITE_CODE = :b5
885,540 3,531 250.8 16.3 203835771
SELECT SUM(MVT_QUANTITE) FROM APS_MVT_MOUVEMENTS WHERE PERIOD
E > :b1 AND ARTICLE_ID = :b2 AND STATUT_CODE = :b3 AND REGIME
= :b4 AND MVT_TYPE = 'T' AND MVT_QUANTITE < 0 AND GISEMENT_T
YPE IN ( 'L','F' ) AND MVT_SITE_CODE = :b5
885,540 3,531 250.8 16.3 3827568942
SELECT SUM(MVT_QUANTITE) FROM APS_MVT_MOUVEMENTS WHERE PERIOD
E > :b1 AND ARTICLE_ID = :b2 AND STATUT_CODE = :b3 AND REGIME
= :b4 AND MVT_TYPE = 'T' AND MVT_QUANTITE > 0 AND GISEMENT_T
YPE IN ( 'T' ) AND GISEMENT_SITE_CODE = :b5
885,410 3,544 249.8 16.3 667813037
SELECT SUM(MVT_QUANTITE) FROM APS_MVT_MOUVEMENTS WHERE PERIOD
E > :b1 AND ARTICLE_ID = :b2 AND STATUT_CODE = :b3 AND REGIME
= :b4 AND MVT_TYPE = 'T' AND MVT_QUANTITE < 0 AND GISEMENT_T
YPE IN ( 'T' ) AND GISEMENT_SITE_CODE = :b5
472,580 1 472,580.0 8.7 1418790643
SELECT COUNT(*) FROM VAPS_APS_SORTIES WHERE MVT_DATE LIKE '%' AN
D INVEST_NUMERO IS NULL and (CLE=:1)
180,137 1 180,137.0 3.3 1562147089
SELECT COUNT(*) FROM VPRF_PRF_ETAT_STOCKS
110,321 443 249.0 2.0 2233067473
SELECT SUM(MVT_QUANTITE) FROM APS_MVT_MOUVEMENTS WHERE PERIOD
E > :b1 AND ARTICLE_ID = :b2 AND STATUT_CODE = :b3 AND REGIME
= :b4
72,956 2 36,478.0 1.3 3376831664
BEGIN statspack.snap; END;
67,904 1 67,904.0 1.3 625421128
INSERT INTO STATS$SQLTEXT ( HASH_VALUE,TEXT_SUBSET,PIECE,SQL_TEX
T,ADDRESS,COMMAND_TYPE,LAST_SNAP_ID ) SELECT ST1.HASH_VALUE,SS.
TEXT_SUBSET,ST1.PIECE,ST1.SQL_TEXT,ST1.ADDRESS,ST1.COMMAND_TYPE,
SS.SNAP_ID FROM V$SQLTEXT ST1,STATS$SQL_SUMMARY SS WHERE SS.S
NAP_ID = :b1 AND SS.DBID = :b2 AND SS.INSTANCE_NUMBER = :b3 A
SQL ordered by Gets for DB: QLM3 Instance: orcl Snaps: 1 -2
-> 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
Buffer Gets Executions Gets per Exec % Total Hash Value
49,930 9,986 5.0 0.9 2352601327
SELECT INSTR(:b1,'/') FROM DUAL
26,262 1 26,262.0 0.5 2467990648
SELECT PRF_CB_QUALITES.QUALITE_LIB, PRF_FICHEARTICLES.FSA_
ARTICLE_CODE, PRF_CB_EMBALLAGES.EMB_LIBELLE, PRF_CB_CALIBR
ES.CALIBRE_LIBELLE, PRF_CB_VARIETES.VARIETE_LIB, PRF_CF_ST
OCKS.CF_CODE, PRF_CF_CHAMBREFROIDES.CF_LIBELLE, to_char(PR
F_CF_STOCKS.MC_DATE_CONGELATION,'ddd') ||PRF_CF_STOCKS.MC_EQUIPE
25,024 1 25,024.0 0.5 2687416176
SELECT num_lot_cqi num_lot, date_congelation date_peche, equipe_
congelation equipe_conditionnement, equipe_emballage FROM VCQI_P
RF_CB_LOTS WHERE site_code = fcqi_parametre ('SITE_CODE', 0) AND
quart_code like nvl(:1,'%') order by date_congelation desc
24,952 1 24,952.0 0.5 2144314401
SELECT DATE_CONGELATION,EQUIPE_CONGELATION,EQUIPE_EMBALLAGE FR
OM VCQI_PRF_CB_LOTS WHERE NUM_LOT_CQI = :b1 AND QUART_CODE LIK
E NVL(:b2,'%')
21,644 3,542 6.1 0.4 3246828773
SELECT SUM(NVL(ARTSTATGIS_QTE,0)) FROM APS_MVT_ARTICLE_GISEMEN
T WHERE ARTICLE_ID = :b1 AND STATUT_CODE = :b2 AND REGIME = :
b3 AND SITE_CODE = :b4
6,714 3 2,238.0 0.1 1676564828
SELECT ROWID,CLE,PBS_DATE,PBS_HEURE,IMPUTATION_CODE,SERVICE_CODE
,STATUT_CODE,REGIME,PBS_BONTRAVAIL,INVEST_NUMERO,UTIL_NUMERO_EME
TTEUR,DDESORTIE_NUM_DDE,PBS_VALEUR,REFACTURER,REFACTURER_CODE,UT
IL_NUMERO_DESTINATAIRE,OBSERVATION,IMPRIME_UNEFOIS,PBS_VALIDE,DA
TE_VALIDATION,PBS_ENVOYE_MAGASIN,DATE_ENVOIMAG,PBS_GISEMENT_VALI
6,714 3 2,238.0 0.1 2431929513
SELECT COUNT(*) FROM APS_SORTIES_HDR WHERE (PBS_VALIDE='O') AND
(PBS_ENVOYE_MAGASIN='O' )AND (PBS_GISEMENT_VALIDE='N')
6,022 60 100.4 0.1 1010618514
SELECT COUNT(*) FROM QRH_PNT_MOUVEMENTS WHERE STE_CODE = :1 AND
(ANOMALIE!='0') AND (ANOMALIE!='1') AND (ANOMALIE!='2') AND (ANO
MALIE!='3') AND (ANOMALIE!='21') AND (VALIDEE='N') AND (JOURNEE=
TO_CHAR(:2,'dd/mm/yyyy')) AND (MATRICULE=:3) AND (SERVICE_CODE=:
4) and (MATRICULE=:5) and (STE_CODE=:6)
6,022 60 100.4 0.1 4067308175
SELECT ROWID,VALIDEE,MATRICULE,ENTREE,SORTIE,REGUL,ORIGINE_POINT
AGE,JUSTIFICATION_CODE,JUSTIFIEE,ANOMALIE,JOURNEE,SERVICE_CODE,S
TE_CODE,UTIL_NUMERO_JUSTIFIER,UTIL_NUMERO_VALIDER,OK_PAIE,DATE_O
K_PAIE FROM QRH_PNT_MOUVEMENTS WHERE STE_CODE = :1 AND (ANOMALIE
!='0') AND (ANOMALIE!='1') AND (ANOMALIE!='2') AND (ANOMALIE!='3
SQL ordered by Gets for DB: QLM3 Instance: orcl Snaps: 1 -2
-> 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
Buffer Gets Executions Gets per Exec % Total Hash Value
SQL ordered by Reads for DB: QLM3 Instance: orcl Snaps: 1 -2
-> End Disk Reads Threshold: 1000
Physical Reads Executions Reads per Exec % Total Hash Value
16,941 1 16,941.0 25.4 1418790643
SELECT COUNT(*) FROM VAPS_APS_SORTIES WHERE MVT_DATE LIKE '%' AN
D INVEST_NUMERO IS NULL and (CLE=:1)
12,263 443 27.7 18.4 2233067473
SELECT SUM(MVT_QUANTITE) FROM APS_MVT_MOUVEMENTS WHERE PERIOD
E > :b1 AND ARTICLE_ID = :b2 AND STATUT_CODE = :b3 AND REGIME
= :b4
6,699 3 2,233.0 10.0 2431929513
SELECT COUNT(*) FROM APS_SORTIES_HDR WHERE (PBS_VALIDE='O') AND
(PBS_ENVOYE_MAGASIN='O' )AND (PBS_GISEMENT_VALIDE='N')
6,493 3 2,164.3 9.7 1676564828
SELECT ROWID,CLE,PBS_DATE,PBS_HEURE,IMPUTATION_CODE,SERVICE_CODE
,STATUT_CODE,REGIME,PBS_BONTRAVAIL,INVEST_NUMERO,UTIL_NUMERO_EME
TTEUR,DDESORTIE_NUM_DDE,PBS_VALEUR,REFACTURER,REFACTURER_CODE,UT
IL_NUMERO_DESTINATAIRE,OBSERVATION,IMPRIME_UNEFOIS,PBS_VALIDE,DA
TE_VALIDATION,PBS_ENVOYE_MAGASIN,DATE_ENVOIMAG,PBS_GISEMENT_VALI
4,783 2 2,391.5 7.2 3376831664
BEGIN statspack.snap; END;
4,075 1 4,075.0 6.1 1762397322
SELECT ROWID,MC_CODE,CB_QUALITE,CB_EMBALLAGE,CB_CALIBRE,CB_VARIE
TE,TYPECH_CODE,TYPECH_LIBELLE,CF_CODE,CF_LIBELLE,MC_EQUIPE_CONDI
TIONNEMENT,MC_DATE_CONGELATION,MC_EQUIPE_EMBALLAGE,MC_DATE_EMBAL
LAGE,INC_CODE,INC_LIBELLE,PALETTE_CODE,TP_CODE,CB_ORIGINE_CODE,U
SINE_CODE,LIEU_CODE,MC_ETAT,TP_LIBELLE,ORIGINE_LIBELLE,QUALITE_L
3,455 1 3,455.0 5.2 2467990648
SELECT PRF_CB_QUALITES.QUALITE_LIB, PRF_FICHEARTICLES.FSA_
ARTICLE_CODE, PRF_CB_EMBALLAGES.EMB_LIBELLE, PRF_CB_CALIBR
ES.CALIBRE_LIBELLE, PRF_CB_VARIETES.VARIETE_LIB, PRF_CF_ST
OCKS.CF_CODE, PRF_CF_CHAMBREFROIDES.CF_LIBELLE, to_char(PR
F_CF_STOCKS.MC_DATE_CONGELATION,'ddd') ||PRF_CF_STOCKS.MC_EQUIPE
2,308 1 2,308.0 3.5 3874720143
INSERT INTO STATS$SQL_SUMMARY ( SNAP_ID,DBID,INSTANCE_NUMBER,TEX
T_SUBSET,SHARABLE_MEM,SORTS,MODULE,LOADED_VERSIONS,EXECUTIONS,LO
ADS,INVALIDATIONS,PARSE_CALLS,DISK_READS,BUFFER_GETS,ROWS_PROCES
SED,ADDRESS,HASH_VALUE,VERSION_COUNT ) SELECT :b1,:b2,:b3,SUBST
R(SQL_TEXT,1,31),SHARABLE_MEM,SORTS,MODULE,LOADED_VERSIONS,EXECU
2,295 1 2,295.0 3.4 3337740287
INSERT INTO STATS$SQL_STATISTICS ( SNAP_ID,DBID,INSTANCE_NUMBER,
TOTAL_SQL,TOTAL_SQL_MEM,SINGLE_USE_SQL,SINGLE_USE_SQL_MEM ) SEL
ECT :b1,:b2,:b3,COUNT(1),SUM(SHARABLE_MEM),SUM(DECODE(EXECUTIONS
,1,1,0)),SUM(DECODE(EXECUTIONS,1,SHARABLE_MEM,0)) FROM V$SQLXS
2,232 14 159.4 3.3 2819681083
SELECT COUNT(*) FROM APS_SORTIES_HDR WHERE PBS_GISEMENT_VALIDE =
'N' and (SERVICE_CODE=:1) and (PBS_VALIDE=:2)
SQL ordered by Reads for DB: QLM3 Instance: orcl Snaps: 1 -2
-> End Disk Reads Threshold: 1000
Physical Reads Executions Reads per Exec % Total Hash Value
2,232 14 159.4 3.3 2856670560
SELECT ROWID,CLE,IMPUTATION_CODE,SERVICE_CODE,STATUT_CODE,REGIME
,INVEST_NUMERO,PBS_BONTRAVAIL,REFACTURER,REFACTURER_CODE,ENTREE_
NUMERO,PBS_DATE,PBS_HEURE,UTIL_NUMERO_EMETTEUR,UTIL_NUMERO_DESTI
NATAIRE,OBSERVATION,PBS_VALIDE,DATE_VALIDATION,PBS_ENVOYE_MAGASI
N,DATE_ENVOIMAG,DDESORTIE_NUM_DDE,PBS_VALEUR,IMPRIME_UNEFOIS,PBS
1,168 1 1,168.0 1.8 1352033258
SELECT PRF_CB_QUALITES.QUALITE_LIB, PRF_FICHEARTICLES.FSA_
ARTICLE_CODE, PRF_CB_EMBALLAGES.EMB_LIBELLE, PRF_CB_CALIBR
ES.CALIBRE_LIBELLE, PRF_CB_VARIETES.VARIETE_LIB, PRF_CF_ST
OCKS.CF_CODE, PRF_CF_CHAMBREFROIDES.CF_LIBELLE, to_char(PR
F_CF_STOCKS.MC_DATE_CONGELATION,'ddd') ||PRF_CF_STOCKS.MC_EQUIPE
723 3 241.0 1.1 165227727
SELECT ROWID,CLE,UTIL_NUMERO_VALIDE,VALIDPBS_DATE,VALIDPBS_HEURE
FROM APS_SORTIES_VALIDATION WHERE (CLE=:1)
685 3 228.3 1.0 3538988510
SELECT COUNT(*) FROM APS_SORTIES_VALIDATION WHERE (CLE=:1)
602 1 602.0 0.9 1562147089
SELECT COUNT(*) FROM VPRF_PRF_ETAT_STOCKS
390 15 26.0 0.6 3423685253
INSERT INTO PRF_CF_ENTREES ( MC_CODE,CF_CODE,PALETTE_CODE,MC_ETA
T,SYS_DATE_LECTEUR,TYPE_ENTREE ) VALUES ( :b1,:b2,:b3,SUBSTR(:b
4,1,2),SYSDATE,'E' )
372 6 62.0 0.6 2944582360
SELECT COUNT(*) FROM QRH_FIP_AGENTS WHERE (QRH_FIP_AGENTS.AGE
NT_MATRICULE = :b1 ) AND (QRH_FIP_AGENTS.SERVICE_CODE LIKE :b2
) AND (QRH_FIP_AGENTS.SERVICE_CODE IN (SELECT SERVICE_CODE FRO
M SEC_QRH_ACCES_SERVICES WHERE STE_CODE = :b3 AND (ACCES_FICHE
PERSONNEL = 'O' AND POINTAGECONSULTATION = 'O' AND POINTAGE_
352 15 23.5 0.5 836774746
INSERT INTO PRF_CF_STOCKS ( MC_CODE,TP_CODE,CB_ORIGINE_CODE,USIN
E_CODE,LIEU_CODE,CB_QUALITE,CB_EMBALLAGE,MARQUE_LIBELLE,CB_CALIB
RE,CB_VARIETE,TYPECH_CODE,MC_DATE_CONGELATION,MC_EQUIPE_CONDITIO
NNEMENT,MC_DATE_EMBALLAGE,MC_EQUIPE_EMBALLAGE,PALETTE_CODE,CF_CO
DE,FSA_ARTICLE_CODE,MC_POIDS_KG,MC_ETAT,INC_CODE,BASSIN_CODE,MAR
271 15 18.1 0.4 1991901539
SELECT COUNT('X') FROM DUAL WHERE EXISTS (SELECT 'X' FROM
PRF_LOTS_ENTREES WHERE NUMERO_LOT = :b1 AND TP_CODE = :b2 AND
SQL ordered by Executions for DB: QLM3 Instance: orcl Snaps: 1 -2
-> End Executions Threshold: 100
Executions Rows Processed Rows per Exec Hash Value
9,986 9,986 1.0 2352601327
SELECT INSTR(:b1,'/') FROM DUAL
3,544 3,544 1.0 8985785
SELECT SUM(MVT_QUANTITE) FROM APS_MVT_MOUVEMENTS WHERE PERIOD
E > :b1 AND ARTICLE_ID = :b2 AND STATUT_CODE = :b3 AND REGIME
= :b4 AND MVT_TYPE = 'T' AND MVT_QUANTITE > 0 AND GISEMENT_T
YPE IN ( 'L','F' ) AND MVT_SITE_CODE = :b5
3,544 3,544 1.0 667813037
SELECT SUM(MVT_QUANTITE) FROM APS_MVT_MOUVEMENTS WHERE PERIOD
E > :b1 AND ARTICLE_ID = :b2 AND STATUT_CODE = :b3 AND REGIME
= :b4 AND MVT_TYPE = 'T' AND MVT_QUANTITE < 0 AND GISEMENT_T
YPE IN ( 'T' ) AND GISEMENT_SITE_CODE = :b5
3,544 3,544 1.0 739720993
SELECT SUM(MVT_QUANTITE) FROM APS_MVT_MOUVEMENTS WHERE PERIOD
E > :b1 AND ARTICLE_ID = :b2 AND STATUT_CODE = :b3 AND REGIME
= :b4 AND MVT_TYPE != 'T' AND MVT_SITE_CODE = :b5
3,542 3,542 1.0 3246828773
SELECT SUM(NVL(ARTSTATGIS_QTE,0)) FROM APS_MVT_ARTICLE_GISEMEN
T WHERE ARTICLE_ID = :b1 AND STATUT_CODE = :b2 AND REGIME = :
b3 AND SITE_CODE = :b4
3,531 3,531 1.0 203835771
SELECT SUM(MVT_QUANTITE) FROM APS_MVT_MOUVEMENTS WHERE PERIOD
E > :b1 AND ARTICLE_ID = :b2 AND STATUT_CODE = :b3 AND REGIME
= :b4 AND MVT_TYPE = 'T' AND MVT_QUANTITE < 0 AND GISEMENT_T
YPE IN ( 'L','F' ) AND MVT_SITE_CODE = :b5
3,531 3,531 1.0 3827568942
SELECT SUM(MVT_QUANTITE) FROM APS_MVT_MOUVEMENTS WHERE PERIOD
E > :b1 AND ARTICLE_ID = :b2 AND STATUT_CODE = :b3 AND REGIME
= :b4 AND MVT_TYPE = 'T' AND MVT_QUANTITE > 0 AND GISEMENT_T
YPE IN ( 'T' ) AND GISEMENT_SITE_CODE = :b5
629 629 1.0 3347504826
SELECT COUNT('x') FROM DUAL WHERE EXISTS (SELECT 'x' FROM
PRF_TB_AI WHERE CODE_AI = :b1 )
586 586 1.0 830918687
SELECT SYSDATE FROM DUAL
494 494 1.0 2353080377
INSERT INTO APS_ARCHIVE_STOCKS_DTL VALUES ( :b1,:b2,:b3,:b4,:b5,
:b6 )
444 444 1.0 431034241
UPDATE APS_ARCHIVE_STOCKS SET ART_STAT_QTE_STOCK_SITE=:b1 WHERE
PERIODE = :b2 AND ARTICLE_ID = :b3 AND STATUT_CODE = :b4 AND
REGIME = :b5
443 443 1.0 2233067473
SELECT SUM(MVT_QUANTITE) FROM APS_MVT_MOUVEMENTS WHERE PERIOD
SQL ordered by Executions for DB: QLM3 Instance: orcl Snaps: 1 -2
-> End Executions Threshold: 100
Executions Rows Processed Rows per Exec Hash Value
E > :b1 AND ARTICLE_ID = :b2 AND STATUT_CODE = :b3 AND REGIME
= :b4
442 442 1.0 4030231140
INSERT INTO APS_ARCHIVE_STOCKS ( PERIODE,ARTICLE_ID,STATUT_CODE,
REGIME,ART_STAT_QTE_STOCK,ART_STAT_QTE_STOCK_SITE,ART_STAT_PUMP,
ART_STAT_PUMP_EURO,ART_STAT_PUMP_1 ) VALUES ( :b1,:b2,:b3,:b4,:
b5,:b6,:b7,:b8, NULL )
441 3,520 8.0 2193642303
SELECT SITE_CODE FROM APS_LOC_SITES
416 167 0.4 3549129673
SELECT DISTINCT LIBELLE_PRODUIT FROM VCQI_PRF_CB_QC_PRODUITS
WHERE TYPE_PRODUIT = :b1
415 415 1.0 3105143149
SELECT UTIL_NOM || DECODE(UTIL_PRENOM, NULL , NULL ,' ' || UTIL_
PRENOM ) UTIL_NOM_PRENOM FROM COM_UTILISATEURS WHERE UTIL_NU
MERO = :b1
270 270 1.0 1045955060
SELECT COUNT('X') FROM DUAL WHERE EXISTS (SELECT 'X' FROM
PRF_GFR_BASSINS WHERE BASSIN_CODE = :b1 )
235 235 1.0 2123798088
SELECT COUNT('X') FROM DUAL WHERE EXISTS (SELECT 'X' FROM
PRF_FICHEARTICLES WHERE FSA_ARTICLE_CODE = :b1 )
218 217 1.0 2987457698
SELECT NOM FROM SYS_CQI_SITE WHERE CODE = :b1
213 213 1.0 1425443843
update seq$ set increment$=:2,minvalue=:3,maxvalue=:4,cycle#=:5,
order$=:6,cache=:7,highwater=:8,audit$=:9 where obj#=:1
183 183 1.0 3529593353
SELECT COUNT('X') FROM DUAL WHERE EXISTS (SELECT 'X' FROM
PRF_GFR_BASSINS WHERE BASSIN_CODE = SUBSTR(:b1,2,3) )
178 0 0.0 313510536
select job from sys.job$ where next_date < sysdate and (field1
= :1 or (field1 = 0 and 'Y' = :2)) order by next_date, job
167 167 1.0 2542007726
SELECT PRF_PARAM_VALEUR FROM PRF_MAHAVOKATRA_PARAMETRES WHERE
PRF_PARAM_NOM = :b1
144 144 1.0 1202015936
SELECT CODE_AI,DESCRIPTION_AI,TYPE_AI,LONGUEUR_MAX FROM PRF_TB
AI WHERE CODEAI = :b1
138 138 1.0 2840696239
SELECT SEQ_PRF_MC_SERIE.Nextval FROM Dual
SQL ordered by Executions for DB: QLM3 Instance: orcl Snaps: 1 -2
-> End Executions Threshold: 100
Executions Rows Processed Rows per Exec Hash Value
101 7 0.1 148923490
SELECT COUNT(*) FROM APS_SORTIES_HDR WHERE (PBS_VALIDE='O') AND
(PBS_ENVOYE_MAGASIN='O' )AND (PBS_GISEMENT_VALIDE='N') and (CLE=
:1)
101 7 0.1 2329028825
SELECT ROWID,CLE,PBS_DATE,PBS_HEURE,IMPUTATION_CODE,SERVICE_CODE
Instance Activity Stats for DB: QLM3 Instance: orcl Snaps: 1 -2
Statistic Total per Second per Trans
background checkpoints completed 4 0.0 0.0
background checkpoints started 4 0.0 0.0
background timeouts 620 1.4 3.8
branch node splits 0 0.0 0.0
buffer is not pinned count 4,838,419 10,587.4 29,502.6
buffer is pinned count 15,660,264 34,267.5 95,489.4
bytes received via SQL*Net from c 7,127,276 15,595.8 43,459.0
bytes sent via SQL*Net to client 13,724,270 30,031.2 83,684.6
calls to get snapshot scn: kcmgss 41,025 89.8 250.2
calls to kcmgas 383 0.8 2.3
calls to kcmgcs 145 0.3 0.9
change write time 134 0.3 0.8
cleanouts and rollbacks - consist 0 0.0 0.0
cleanouts only - consistent read 3 0.0 0.0
cluster key scan block gets 132 0.3 0.8
cluster key scans 64 0.1 0.4
commit cleanout failures: block l 2 0.0 0.0
commit cleanout failures: buffer 0 0.0 0.0
commit cleanout failures: callbac 3 0.0 0.0
commit cleanout failures: cannot 0 0.0 0.0
commit cleanouts 1,238 2.7 7.6
commit cleanouts successfully com 1,233 2.7 7.5
consistent changes 37 0.1 0.2
consistent gets 5,342,340 11,690.0 32,575.2
CPU used by this session 563,606,920 1,233,275.5 3,436,627.6
CPU used when call started 16,475 36.1 100.5
CR blocks created 32 0.1 0.2
current blocks converted for CR
cursor authentications 0 0.0 0.0
data blocks consistent reads - un 37 0.1 0.2
db block changes 19,010 41.6 115.9
db block gets 74,714 163.5 455.6
DBWR buffers scanned 11,292 24.7 68.9
DBWR checkpoint buffers written 604 1.3 3.7
DBWR checkpoints 4 0.0 0.0
DBWR free buffers found 10,956 24.0 66.8
DBWR lru scans 48 0.1 0.3
DBWR make free requests 48 0.1 0.3
DBWR summed scan depth 11,292 24.7 68.9
DBWR transaction table writes 31 0.1 0.2
DBWR undo block writes 223 0.5 1.4
deferred (CURRENT) block cleanout 796 1.7 4.9
DFO trees parallelized 0 0.0 0.0
dirty buffers inspected 41 0.1 0.3
enqueue conversions 59 0.1 0.4
enqueue releases 1,608 3.5 9.8
enqueue requests 1,627 3.6 9.9
enqueue timeouts 21 0.1 0.1
enqueue waits 0 0.0 0.0
execute count 40,202 88.0 245.1
free buffer inspected 43 0.1 0.3
free buffer requested 50,071 109.6 305.3
hot buffers moved to head of LRU 32,358 70.8 197.3
immediate (CR) block cleanout app 3 0.0 0.0
immediate (CURRENT) block cleanou 216 0.5 1.3
index fast full scans (full) 197 0.4 1.2
Instance Activity Stats for DB: QLM3 Instance: orcl Snaps: 1 -2
Statistic Total per Second per Trans
leaf node splits 43 0.1 0.3
logons cumulative 376 0.8 2.3
messages received 566 1.2 3.5
messages sent 566 1.2 3.5
no buffer to keep pinned count 361,161 790.3 2,202.2
no work - consistent read gets 4,584,108 10,030.9 27,951.9
opened cursors cumulative 2,903 6.4 17.7
Parallel operations not downgrade 0 0.0 0.0
parse count (hard) 41 0.1 0.3
parse count (total) 2,879 6.3 17.6
parse time cpu 109 0.2 0.7
parse time elapsed 191 0.4 1.2
physical reads 66,694 145.9 406.7
physical reads direct 17,008 37.2 103.7
physical writes 16,830 36.8 102.6
physical writes direct 15,849 34.7 96.6
physical writes non checkpoint 16,523 36.2 100.8
pinned buffers inspected 0 0.0 0.0
prefetched blocks 28,860 63.2 176.0
prefetched blocks aged out before 104 0.2 0.6
process last non-idle time 395,024,325 864,385.8 2,408,684.9
PX local messages recv'd 3 0.0 0.0
PX local messages sent 2 0.0 0.0
queries parallelized 0 0.0 0.0
recovery array reads 0 0.0 0.0
recovery blocks read 0 0.0 0.0
recursive calls 31,404 68.7 191.5
recursive cpu usage 973 2.1 5.9
redo blocks written 7,766 17.0 47.4
redo buffer allocation retries 24 0.1 0.2
redo entries 9,689 21.2 59.1
redo log space requests 10 0.0 0.1
redo log space wait time 205 0.5 1.3
redo ordering marks 0 0.0 0.0
redo size 3,762,380 8,232.8 22,941.3
redo synch time 310 0.7 1.9
redo synch writes 252 0.6 1.5
redo wastage 83,944 183.7 511.9
redo write time 798 1.8 4.9
redo writer latching time 2 0.0 0.0
redo writes 348 0.8 2.1
rollback changes - undo records a 100 0.2 0.6
rollbacks only - consistent read 32 0.1 0.2
rows fetched via callback 152,467 333.6 929.7
session connect time 395,024,325 864,385.8 2,408,684.9
session logical reads 5,417,054 11,853.5 33,030.8
session pga memory 1,198,867,080 2,623,341.5 7,310,165.1
session pga memory max 1,252,931,128 2,741,643.6 7,639,824.0
session uga memory 2,021,828 4,424.1 12,328.2
session uga memory max 11,504,160 25,173.2 70,147.3
sorts (disk) 8 0.0 0.1
sorts (memory) 1,013 2.2 6.2
sorts (rows) 106,560 233.2 649.8
SQL*Net roundtrips to/from client 62,770 137.4 382.7
summed dirty queue length 2 0.0 0.0
switch current to new buffer
Instance Activity Stats for DB: QLM3 Instance: orcl Snaps: 1 -2
Statistic Total per Second per Trans
table fetch by rowid 10,162,108 22,236.6 61,964.1
table fetch continued row 5,568 12.2 34.0
table scan blocks gotten 73,722 161.3 449.5
table scan rows gotten 3,805,522 8,327.2 23,204.4
table scans (direct read) 0 0.0 0.0
table scans (long tables) 50 0.1 0.3
table scans (rowid ranges) 0 0.0 0.0
table scans (short tables) 12,550 27.5 76.5
total file opens 1,587 3.5 9.7
transaction rollbacks 0 0.0 0.0
user calls 63,865 139.8 389.4
user commits 153 0.3 0.9
user rollbacks 11 0.0 0.1
write clones created in backgroun 0 0.0 0.0
write clones created in foregroun 27 0.1 0.2
Tablespace IO Stats for DB: QLM3 Instance: orcl Snaps: 1 -2
->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
9,953 22 0.0 1.2 11,991 26 0 0.0
APS_DATA_DYNA
18,803 41 4.4 2.3 67 0 7 2.9
TEMP1
4,163 9 0.0 1.1 3,367 7 0 0.0
APS_INDEX
1,169 3 6.3 1.6 113 0 0 0.0
PRF_DATA_DYNA
290 1 13.7 10.2 105 0 2 5.0
APS_DATA_STAT
324 1 4.4 4.6 41 0 0 0.0
TOOLS
53 0 10.2 1.0 287 1 0 0.0
PRF_INDEX
133 0 6.7 1.0 88 0 1 0.0
SYSTEM
128 0 12.9 1.7 58 0 0 0.0
RBS1
17 0 10.6 1.0 158 0 1 330.0
GRH_DATA_DYNA
72 0 7.1 1.0 78 0 0 0.0
RBS
30 0 44.7 1.0 111 0 0 0.0
GRH_INDEX
38 0 8.2 1.0 46 0 0 0.0
PRF_DATA_STAT
53 0 11.5 2.2 3 0 0 0.0
CQI_DATA_DYNA
25 0 5.2 4.2 12 0 0 0.0
CQI_INDEX
28 0 5.0 1.0 9 0 0 0.0
GRH_DATA_STAT
23 0 5.2 8.0 3 0 0 0.0
GTMAO_DATA_DYNA
20 0 0.0 1.0 6 0 0 0.0
COM_DATA_DYNA
19 0 20.5 1.0 3 0 0 0.0
COM_INDEX
18 0 6.1 1.0 3 0 0 0.0
RFG_INDEX
9 0 0.0 1.0 9 0 0 0.0
CQI_DATA_STAT
13 0 3.8 1.0 3 0 0 0.0
GFRP_DATA_DYNA
9 0 0.0 1.0 6 0 0 0.0
USERS
9 0 0.0 1.0 6 0 0 0.0
RFG_DATA_DYNA
6 0 0.0 1.0 6 0 0 0.0
GFRP_DATA_STAT
6 0 0.0 1.0 3 0 0 0.0
Tablespace IO Stats for DB: QLM3 Instance: orcl Snaps: 1 -2
->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)
GFRP_INDEX
6 0 0.0 1.0 3 0 0 0.0
PRF_DATA_DYNA_ARCHIVE
6 0 0.0 1.0 3 0 0 0.0
PRF_INDEX_ARCHIVE
6 0 0.0 1.0 3 0 0 0.0
COM_DATA_STAT
4 0 2.5 1.0 3 0 0 0.0
BO_DATA
3 0 0.0 1.0 3 0 0 0.0
DRSYS
3 0 0.0 1.0 3 0 0 0.0
FSQ_DATA_DYNA
3 0 0.0 1.0 3 0 0 0.0
FSQ_DATA_STAT
3 0 0.0 1.0 3 0 0 0.0
FSQ_INDEX
3 0 0.0 1.0 3 0 0 0.0
GNS_DATA_DYNA
3 0 0.0 1.0 3 0 0 0.0
GTMAO_DATA_STAT
3 0 0.0 1.0 3 0 0 0.0
GTMAO_INDEX
3 0 0.0 1.0 3 0 0 0.0
INDX
3 0 0.0 1.0 3 0 0 0.0
RFG_DATA_STAT
3 0 0.0 1.0 3 0 0 0.0
SMQ_DATA_DYNA
3 0 0.0 1.0 3 0 0 0.0
SMQ_DATA_STAT
3 0 0.0 1.0 3 0 0 0.0
SMQ_INDEX
3 0 0.0 1.0 3 0 0 0.0
File IO Stats for DB: QLM3 Instance: orcl Snaps: 1 -2
->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)
APS_DATA_DYNA F:\ORADATA\APS_DYNA_DF
279 1 7.0 3.4 3 0 0
F:\ORADATA\APS_DYNA_01.DF
477 1 4.9 2.2 4 0 0
F:\ORADATA\APS_DYNA_02.DF
412 1 4.5 1.5 4 0 0
F:\ORADATA\APS_DYNA_03.DF
420 1 5.1 1.3 3 0 0
F:\ORADATA\APS_DYNA_04.DF
9 0 0.0 1.0 3 0 0
F:\ORADATA\APS_DYNA_05.DF
17 0 4.1 3.0 3 0 0
F:\ORADATA\APS_DYNA_06.DF
6,158 13 4.1 1.4 11 0 6 0.0
F:\ORADATA\APS_DYNA_07.DF
8,331 18 3.4 1.4 9 0 1 20.0
F:\ORADATA\APS_DYNA_08.DF
10 0 2.0 1.0 3 0 0
G:\ORADATA\APS_DYNA_09.DF
2,172 5 7.8 8.5 7 0 0
G:\ORADATA\APS_DYNA_10.DF
518 1 6.4 2.7 17 0 0
APS_DATA_STAT F:\ORADATA\APS_STAT_DF
324 1 4.4 4.6 41 0 0
APS_INDEX F:\ORADATA\APS_IDX_003.DF
10 0 0.0 1.0 13 0 0
F:\ORADATA\APS_INDEX_DF
117 0 8.2 1.0 18 0 0
F:\ORADATA\APS_INDEX_DF02
12 0 1.7 1.0 20 0 0
F:\ORADATA\APS_INDEX_04.DF
14 0 2.9 1.0 33 0 0
F:\ORADATA\APS_INDEX_05.DF
1,016 2 6.2 1.7 29 0 0
BO_DATA F:\ORADATA\BO_DATA.DF
3 0 0.0 1.0 3 0 0
COM_DATA_DYNA E:\ORACLE\ORADATA\QLM3\COM_DATA_DYNA.ORA
19 0 20.5 1.0 3 0 0
COM_DATA_STAT E:\ORACLE\ORADATA\QLM3\COM_DATA_STAT.ORA
4 0 2.5 1.0 3 0 0
COM_INDEX F:\ORADATA\COM_INDEX.DF
18 0 6.1 1.0 3 0 0
CQI_DATA_DYNA G:\ORADATA\CQI_DATA_DYNA_01.DF
25 0 5.2 4.2 12 0 0
File IO Stats for DB: QLM3 Instance: orcl Snaps: 1 -2
->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)
CQI_DATA_STAT G:\ORADATA\CQI_DATA_STAT_01.DF
13 0 3.8 1.0 3 0 0
CQI_INDEX G:\ORADATA\CQI_INDEX_01.DF
28 0 5.0 1.0 9 0 0
DRSYS E:\ORACLE\ORADATA\QLM3\DR01.DBF
3 0 0.0 1.0 3 0 0
FSQ_DATA_DYNA F:\ORADATA\FSQ_DYNA_DF
3 0 0.0 1.0 3 0 0
FSQ_DATA_STAT F:\ORADATA\FSQ_STAT_DF
3 0 0.0 1.0 3 0 0
FSQ_INDEX F:\ORADATA\FSQ_INDEX_DF
3 0 0.0 1.0 3 0 0
GFRP_DATA_DYNA G:\ORADATA\GFRP_DYNA_01.DF
6 0 0.0 1.0 3 0 0
H:\ORADATA\GFRP_DATA_DYNA
3 0 0.0 1.0 3 0 0
GFRP_DATA_STAT G:\ORADATA\GFRP_STAT_01.DF
6 0 0.0 1.0 3 0 0
GFRP_INDEX G:\ORADATA\GFRP_INDEX_01.DF
6 0 0.0 1.0 3 0 0
GNS_DATA_DYNA F:\ORADATA\GNS_DATA_DYNA_01.ORA
3 0 0.0 1.0 3 0 0
GRH_DATA_DYNA F:\ORADATA\GRH_DY_1.DF
38 0 11.3 1.0 37 0 0
F:\ORADATA\GRH_DY_2.DF
3 0 0.0 1.0 5 0 0
F:\ORADATA\GRH_DY_3.DF
3 0 0.0 1.0 3 0 0
F:\ORADATA\GRH_DY_4.DF
13 0 6.2 1.0 18 0 0
F:\ORADATA\GRH_DY_5.DF
3 0 0.0 1.0 3 0 0
F:\ORADATA\GRH_DY_6.DF
3 0 0.0 1.0 3 0 0
F:\ORADATA\GRH_DY_7.DF
3 0 0.0 1.0 3 0 0
H:\ORADATA\GRH_DY_8.DF
3 0 0.0 1.0 3 0 0
H:\ORADATA\GRH_DY_9.DF
3 0 0.0 1.0 3 0 0
GRH_DATA_STAT F:\ORADATA\GRH_ST_1.DF
File IO Stats for DB: QLM3 Instance: orcl Snaps: 1 -2
->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)
23 0 5.2 8.0 3 0 0
GRH_INDEX F:\ORADATA\GRH_IDX.DF
38 0 8.2 1.0 46 0 0
GTMAO_DATA_DYNA F:\ORADATA\GTMAO_DATA_DYNA_01.DF
10 0 0.0 1.0 3 0 0
F:\ORADATA\GTM_DY_2.DF
10 0 0.0 1.0 3 0 0
GTMAO_DATA_STAT F:\ORADATA\GTMAO_DATA_STAT_01.DF
3 0 0.0 1.0 3 0 0
GTMAO_INDEX F:\ORADATA\GTMAO_INDEX_01.DF
3 0 0.0 1.0 3 0 0
INDX E:\ORACLE\ORADATA\QLM3\INDX01.DBF
3 0 0.0 1.0 3 0 0
PRF_DATA_DYNA E:\ORADATA\PRF_D14.DF
29 0 10.3 1.0 12 0 0
E:\ORADATA\PRF_D15.DF
28 0 10.4 1.0 19 0 0
E:\ORADATA\PRF_D16.DF
89 0 31.9 26.9 9 0 0
F:\ORADATA\PRF_D1.DF
9 0 5.6 1.0 4 0 0
F:\ORADATA\PRF_D10.DF
6 0 0.0 1.0 3 0 0
F:\ORADATA\PRF_D11.DF
6 0 0.0 1.0 3 0 0
F:\ORADATA\PRF_D12.DF
6 0 0.0 1.0 3 0 0
F:\ORADATA\PRF_D13.DF
26 0 7.7 7.2 3 0 2 5.0
F:\ORADATA\PRF_D2.DF
6 0 0.0 1.0 3 0 0
F:\ORADATA\PRF_D3.DF
6 0 0.0 1.0 5 0 0
F:\ORADATA\PRF_D4.DF
15 0 4.0 1.0 10 0 0
F:\ORADATA\PRF_D5.DF
15 0 4.0 1.0 10 0 0
F:\ORADATA\PRF_D6.DF
6 0 0.0 1.0 3 0 0
F:\ORADATA\PRF_D7.DF
6 0 0.0 1.0 3 0 0
F:\ORADATA\PRF_D8.DF
6 0 0.0 1.0 3 0 0
F:\ORADATA\PRF_D9.DF
6 0 0.0 1.0 3 0 0
G:\ORADATA\PRF_D17.DF
File IO Stats for DB: QLM3 Instance: orcl Snaps: 1 -2
->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)
16 0 7.5 13.3 3 0 0
PRF_DATA_DYNA G:\ORADATA\PRF_D18.DF
9 0 6.7 1.0 6 0 0
PRF_DATA_DYNA_ARCHIVE H:\ORADATA\PRF_DATA_DYNA_ARCHIVE01.DF
6 0 0.0 1.0 3 0 0
PRF_DATA_STAT F:\ORADATA\PRF_ST1.DF
53 0 11.5 2.2 3 0 0
PRF_INDEX E:\ORADATA\PRF_IDX4.DF
14 0 7.1 1.0 10 0 0
E:\ORADATA\PRF_IDX5.DF
13 0 3.8 1.0 10 0 0
E:\ORADATA\PRF_IDX6.DF
18 0 8.3 1.0 12 0 0
E:\ORADATA\PRF_IDX7.DF
10 0 2.0 1.0 3 0 0
F:\ORADATA\PRF_IDX1.DF
8 0 2.5 1.0 4 0 0
F:\ORADATA\PRF_IDX2.DF
11 0 3.6 1.0 11 0 0
F:\ORADATA\PRF_IDX3.DF
43 0 7.9 1.0 28 0 1 0.0
H:\ORADATA\PRF_IDX8.DF
16 0 10.6 1.0 10 0 0
PRF_INDEX_ARCHIVE H:\ORADATA\PRF_INDEX_ARCHIVE_01.DF
6 0 0.0 1.0 3 0 0
RBS E:\ORACLE\ORADATA\QLM3\RBS01.DBF
22 0 59.1 1.0 92 0 0
E:\ORACLE\ORADATA\QLM3\RBS02.DBF
8 0 5.0 1.0 19 0 0
RBS1 E:\ORACLE\ORADATA\QLM3\RBS11.ORA
3 0 0.0 1.0 18 0 1 330.0
E:\ORACLE\ORADATA\QLM3\RBS12.ORA
5 0 24.0 1.0 12 0 0
E:\ORACLE\ORADATA\QLM3\RBS13.ORA
9 0 6.7 1.0 128 0 0
RFG_DATA_DYNA G:\ORADATA\RFG_DATA_DYNA_01.DF
3 0 0.0 1.0 3 0 0
G:\ORADATA\RFG_DATA_DYNA_02.DF
3 0 0.0 1.0 3 0 0
RFG_DATA_STAT G:\ORADATA\RFG_DATA_STAT_01.DF
3 0 0.0 1.0 3 0 0
RFG_INDEX G:\ORADATA\RFG_INDEX_01.DF
3 0 0.0 1.0 3 0 0
File IO Stats for DB: QLM3 Instance: orcl Snaps: 1 -2
->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)
RFG_INDEX G:\ORADATA\RFG_INDEX_02.DF
3 0 0.0 1.0 3 0 0
G:\ORADATA\RFG_INDEX_03.DF
3 0 0.0 1.0 3 0 0
SMQ_DATA_DYNA F:\ORADATA\SMQ_DYNA_DF
3 0 0.0 1.0 3 0 0
SMQ_DATA_STAT F:\ORADATA\SMQ_STAT_DF
3 0 0.0 1.0 3 0 0
SMQ_INDEX F:\ORADATA\SMQ_INDEX_DF
3 0 0.0 1.0 3 0 0
SYSTEM E:\ORACLE\ORADATA\QLM3\SYSTEM01.DBF
119 0 12.8 1.6 53 0 0
E:\ORACLE\ORADATA\QLM3\SYSTEM02.DBF
9 0 14.4 3.6 5 0 0
TEMP E:\ORACLE\ORADATA\QLM3\TEMP01.DBF
9,953 22 0.0 1.2 11,991 26 0
TEMP1 H:\ORADATA\TEMP101.ORA
4,163 9 0.0 1.1 3,367 7 0
TOOLS E:\ORACLE\ORADATA\QLM3\TOOLS01.DBF
3 0 0.0 1.0 27 0 0
E:\ORACLE\ORADATA\QLM3\TOOLS02.DBF
50 0 10.8 1.0 260 1 0
USERS E:\ORACLE\ORADATA\QLM3\USERS01.DBF
3 0 0.0 1.0 3 0 0
E:\ORACLE\ORADATA\QLM3\USERS02.DBF
6 0 0.0 1.0 3 0 0
Buffer Pool Statistics for DB: QLM3 Instance: orcl Snaps: 1 -2
-> 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 50,061 0 49,675 981 0 0 11
Buffer wait Statistics for DB: QLM3 Instance: orcl Snaps: 1 -2
-> ordered by wait time desc, waits desc
Tot Wait Avg
Class Waits Time (cs) Time (cs)
undo header 1 33 33
data block 10 3 0
Rollback Segment Stats for DB: QLM3 Instance: orcl Snaps: 1 -2
->A high value for "Pct Waits" suggests more rollback segments may be required
Trans Table Pct Undo Bytes
RBS No Gets Waits Written Wraps Shrinks Extends
0 24.0 0.00 0 0 0 0
1 78.0 0.00 16,834 0 0 0
2 84.0 0.00 29,374 0 0 0
3 65.0 0.00 9,950 0 0 0
4 67.0 0.00 14,278 0 0 0
5 66.0 0.00 16,364 0 0 0
6 64.0 0.00 6,144 0 0 0
7 176.0 0.00 58,588 0 0 0
8 69.0 0.00 23,158 0 0 0
9 90.0 0.00 15,068 0 0 0
10 64.0 0.00 9,776 0 0 0
11 69.0 0.00 11,076 0 0 0
12 298.0 0.34 647,830 2 0 0
13 101.0 0.00 233,506 0 0 0
Rollback Segment Storage for DB: QLM3 Instance: orcl Snaps: 1 -2
->Optimal Size should be larger than Avg Active
RBS No Segment Size Avg Active Optimal Size Maximum Size
0 401,408 0 401,408
1 4,186,112 540,690 4,194,304 4,186,112
2 4,186,112 663,298 4,194,304 4,186,112
3 4,186,112 536,369 4,194,304 4,186,112
4 4,186,112 552,957 4,194,304 4,186,112
5 4,186,112 566,795 4,194,304 4,186,112
6 4,186,112 565,140 4,194,304 4,186,112
7 4,186,112 524,103 4,194,304 4,186,112
8 251,854,848 534,027 251,854,848
9 48,447,488 630,996 48,447,488
10 29,810,688 609,701 29,810,688
11 21,823,488 531,386 21,823,488
12 30,875,648 1,398,641 30,875,648
13 15,720,448 4,922,485 20,963,328
Latch Activity for DB: QLM3 Instance: orcl Snaps: 1 -2
->"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 Pct
Get Get Slps NoWait NoWait
Latch Name Requests Miss /Miss Requests Miss
active checkpoint queue latch 395 0.0 0
cache buffer handles 118 0.0 0
cache buffers chains 10,212,613 0.0 0.0 83,659 0.0
cache buffers lru chain 88,174 0.0 0.4 0
channel handle pool latch 18 0.0 23 0.0
channel operations parent lat 36 0.0 23 0.0
checkpoint queue latch 4,264 0.0 0
dml lock allocation 1,219 0.0 0
enqueue hash chains 3,289 0.0 0.0 0
enqueues 5,614 0.0 0
error message lists 9 0.0 0
event group latch 18 0.0 0
file number translation table 10 0.0 0
job_queue_processes parameter 8 0.0 0
ktm global data 3 0.0 0
latch wait list 36 0.0 36 0.0
library cache 287,494 0.1 0.2 92 0.0
library cache load lock 46 0.0 0
list of block allocation 774 0.0 0
loader state object freelist 72 0.0 0
longop free list 535 0.0 0
messages 3,858 0.0 0.0 0
multiblock read objects 11,104 0.0 0
ncodef allocation latch 8 0.0 0
parallel query alloc buffer 32 3.1 0.0 0
parallel query stats 6 0.0 0
parallel txn reco latch 3,083 0.0 0
process allocation 18 0.0 18 0.0
process group creation 41 0.0 0
process queue 18 0.0 0
process queue reference 2,886 0.0 14 0.0
query server freelists 27 0.0 0
query server process 4 0.0 4 0.0
redo allocation 10,454 0.0 0.0 0
redo writing 2,223 0.0 0
row cache objects 38,374 0.0 0.0 12 0.0
sequence cache 383 0.0 0
session allocation 3,315 0.1 1.3 0
session idle bit 128,781 0.0 0.0 0
session switching 8 0.0 0
session timer 149 0.0 0
shared pool 19,330 0.0 0.2 0
sort extent pool 172 0.0 0
Token Manager 904 0.0 12 0.0
transaction allocation 1,143 0.0 0
transaction branch allocation 8 0.0 0
undo global data 1,833 0.0 0
user lock 66 0.0 0
virtual circuit queues 22 0.0 0
Latch Activity for DB: QLM3 Instance: orcl Snaps: 1 -2
->"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 Pct
Get Get Slps NoWait NoWait
Latch Name Requests Miss /Miss Requests Miss
Latch Sleep breakdown for DB: QLM3 Instance: orcl Snaps: 1 -2
-> ordered by misses desc
Get Spin &
Latch Name Requests Misses Sleeps Sleeps 1->4
cache buffers chains 10,212,613 224 9 217/5/2/0/0
library cache 287,494 211 44 176/29/3/3/0
cache buffers lru chain 88,174 20 8 16/0/4/0/0
shared pool 19,330 9 2 8/0/1/0/0
session allocation 3,315 3 4 1/1/0/1/0
Latch Miss Sources for DB: QLM3 Instance: orcl Snaps: 1 -2
-> only latches with sleeps are shown
-> ordered by name, sleeps desc
NoWait Waiter
Latch Name Where Misses Sleeps Sleeps
cache buffers chains kcbgtcr: kslbegin 0 7 9
cache buffers chains kcbgtcr 0 2 0
cache buffers lru chain kcbbiop: lru scan 0 8 0
library cache kglic 0 24 2
library cache kglhdgn: child: 0 18 8
library cache kglget: child: KGLDSBYD 0 1 1
library cache kglpnal: child: alloc spac 0 1 1
session allocation ksuxds: KSUSFCLC not set 0 4 0
shared pool kghfrunp: alloc: clatch no 0 2 0
Dictionary Cache Stats for DB: QLM3 Instance: orcl Snaps: 1 -2
->"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 Pct
Cache Requests Miss Requests Miss Req Usage SGA
dc_constraints 0 0 0 188 99
dc_database_links 0 0 0 0 0
dc_files 0 0 0 16 94
dc_free_extents 26 23.1 9 0.0 19 2,072 99
dc_global_oids 0 0 0 28 62
dc_histogram_data 0 0 0 0 0
dc_histogram_data_valu 0 0 0 0 0
dc_histogram_defs 597 0.0 0 0 ###### 100
dc_object_ids 3,481 0.0 0 0 4,068 100
dc_objects 606 1.5 0 0 8,596 100
dc_outlines 0 0 0 0 0
dc_profiles 14 0.0 0 0 1 9
dc_rollback_segments 394 0.0 0 0 15 54
dc_segments 260 0.0 0 9 4,752 100
dc_sequence_grants 104 0.0 0 0 169 92
dc_sequences 183 0.0 0 169 36 86
dc_synonyms 280 5.7 0 0 4,343 100
dc_tablespace_quotas 33 0.0 0 9 18 23
dc_tablespaces 2,965 0.0 0 0 45 78
dc_used_extents 9 100.0 0 9 2,086 53
dc_user_grants 2,213 0.0 0 0 109 93
dc_usernames 289 0.0 0 0 131 99
dc_users 2,790 0.0 0 0 209 95
ifs_acl_cache_entries 0 0 0 0 0
Library Cache Activity for DB: QLM3 Instance: orcl Snaps: 1 -2
->"Pct Misses" should be very low
Get Pct Pin Pct Invali-
Namespace Requests Miss Requests Miss Reloads dations
BODY 22 0.0 21 0.0 0 0
CLUSTER 0 0 0 0
INDEX 0 0 0 0
OBJECT 0 0 0 0
PIPE 0 0 0 0
SQL AREA 2,846 0.2 48,618 0.2 25 0
TABLE/PROCEDURE 7,107 0.2 29,746 0.2 3 0
TRIGGER 22 0.0 22 0.0 0 0
SGA Memory Summary for DB: QLM3 Instance: orcl Snaps: 1 -2
SGA regions Size in Bytes
Database Buffers 157,286,400
Fixed Size 75,804
Redo Buffers 172,032
Variable Size 185,597,952
sum 343,132,188
SGA breakdown difference for DB: QLM3 Instance: orcl Snaps: 1 -2
Pool Name Begin value End value Difference
java pool free memory 45,973,504 45,973,504 0
java pool memory in use 4,030,464 4,030,464 0
large pool free memory 614,400 614,400 0
shared pool db_block_buffers 2,611,200 2,611,200 0
shared pool db_block_hash_buckets 438,520 438,520 0
shared pool db_files 370,988 370,988 0
shared pool dictionary cache 21,129,860 21,141,516 11,656
shared pool event statistics per ses 774,000 774,000 0
shared pool fixed allocation callbac 640 640 0
shared pool free memory 15,115,180 16,081,664 966,484
shared pool joxlod: in ehe 91,888 91,888 0
shared pool joxlod: in phe 37,284 37,284 0
shared pool joxlod: init P 812 812 0
shared pool joxs heap init 4,248 4,248 0
shared pool KGFF heap 69,160 69,160 0
shared pool KGK heap 19,236 19,236 0
shared pool KQLS heap 8,262,784 8,225,444 -37,340
shared pool library cache 29,124,008 29,099,824 -24,184
shared pool miscellaneous 5,152,512 5,135,872 -16,640
shared pool partitioning d 203,808 185,716 -18,092
shared pool PLS non-lib hp 2,096 2,096 0
shared pool PL/SQL DIANA 3,668,952 3,659,000 -9,952
shared pool PL/SQL MPCODE 1,560,124 1,563,104 2,980
shared pool PL/SQL PPCODE 19,460 19,460 0
shared pool PX msg pool 46,572 46,572 0
shared pool PX subheap 11,612 11,612 0
shared pool sessions 485,100 485,100 0
shared pool sql area 45,274,860 44,405,220 -869,640
shared pool table columns 53,228 53,564 336
shared pool table definiti 16,748 15,428 -1,320
shared pool transaction_branches 368,000 368,000 0
shared pool trigger defini 41,236 36,948 -4,288
shared pool trigger inform 3,380 3,380 0
shared pool trigger source 572 572 0
shared pool type object de 1,600 1,600 0
shared pool view columns d 1,072 1,072 0
db_block_buffers 157,286,400 157,286,400 0
fixed_sga 75,804 75,804 0
log_buffer 163,840 163,840 0
init.ora Parameters for DB: QLM3 Instance: orcl Snaps: 1 -2
End value
Parameter Name Begin value (if different)
audit_trail TRUE
background_dump_dest E:\oracle\admin\QLM3\bdump
compatible 8.1.7.0
control_files E:\oracle\oradata\QLM3\control01.
cursor_sharing EXACT
db_block_buffers 19200
db_block_size 8192
db_file_multiblock_read_count 32
db_files 1024
db_name QLM3
distributed_transactions 500
global_names FALSE
instance_name ORCL
java_pool_size 50000000
job_queue_interval 10
job_queue_processes 4
large_pool_size 614400
log_buffer 163840
log_checkpoint_interval 5000
log_checkpoint_timeout 0
max_dump_file_size 10240
max_enabled_roles 30
mts_dispatchers (PROTOCOL=TCP)(PRE=oracle.aurora.
open_cursors 1000
open_links 4
oracle_trace_collection_name
os_authent_prefix
parallel_max_servers 8
processes 200
query_rewrite_enabled TRUE
query_rewrite_integrity TRUSTED
remote_login_passwordfile EXCLUSIVE
rollback_segments RBS10, RBS11, RBS12, RBS13, RBS14
service_names QLM3
shared_pool_size 128000000
sort_area_retained_size 128000
sort_area_size 128000
timed_statistics TRUE
user_dump_dest E:\oracle\admin\QLM3\udump
utl_file_dir c:\utl_file
End of Report.
Thanks for your help.
regards raitsarevoHi
I'm experienced any problem when our application run one transaction it becomes very slow, before it was speed and from yesterday it takes a lot of time to accomplish the transaction. That's why i analyze the problem with statspack and i've done also a trace. It's for my problem and for academic purpose too.
Many thanks for your help. -
How to get sql server performance counters using query?
Hai i want to see my sql server performance counters like, Full Scans/sec, Buffer
Cache Hit Ratio, Database Transactions/sec, User
Connections, Average Latch Wait Time (ms), Lock
Waits/sec, Lock Timeouts/sec, Number
of Deadlocks/sec, Total Server Memory, SQL
Re-Compilations/sec, User Settable Query. If any one know how to get it by using query means, please help me.
Thanks in advanceHello,
Below is query created by Jonathan Kehayias for measuring Perfom counters using DMV sys.dm_os_performance_counter.
You can download book from below link
https://www.simple-talk.com/books/sql-books/troubleshooting-sql-server-a-guide-for-the-accidental-dba/
DECLARE @CounterPrefix NVARCHAR(30)
SET @CounterPrefix = CASE WHEN @@SERVICENAME = 'MSSQLSERVER'
THEN 'SQLServer:'
ELSE 'MSSQL$' + @@SERVICENAME + ':'
END ;
-- Capture the first counter set
SELECT CAST(1 AS INT) AS collection_instance ,
[OBJECT_NAME] ,
counter_name ,
instance_name ,
cntr_value ,
cntr_type ,
CURRENT_TIMESTAMP AS collection_time
INTO #perf_counters_init
FROM sys.dm_os_performance_counters
WHERE ( OBJECT_NAME = @CounterPrefix + 'Access Methods'
AND counter_name = 'Full Scans/sec'
OR ( OBJECT_NAME = @CounterPrefix + 'Access Methods'
AND counter_name = 'Index Searches/sec'
OR ( OBJECT_NAME = @CounterPrefix + 'Buffer Manager'
AND counter_name = 'Lazy Writes/sec'
OR ( OBJECT_NAME = @CounterPrefix + 'Buffer Manager'
AND counter_name = 'Page life expectancy'
OR ( OBJECT_NAME = @CounterPrefix + 'General Statistics'
AND counter_name = 'Processes Blocked'
OR ( OBJECT_NAME = @CounterPrefix + 'General Statistics'
AND counter_name = 'User Connections'
OR ( OBJECT_NAME = @CounterPrefix + 'Locks'
AND counter_name = 'Lock Waits/sec'
OR ( OBJECT_NAME = @CounterPrefix + 'Locks'
AND counter_name = 'Lock Wait Time (ms)'
OR ( OBJECT_NAME = @CounterPrefix + 'SQL Statistics'
AND counter_name = 'SQL Re-Compilations/sec'
OR ( OBJECT_NAME = @CounterPrefix + 'Memory Manager'
AND counter_name = 'Memory Grants Pending'
OR ( OBJECT_NAME = @CounterPrefix + 'SQL Statistics'
AND counter_name = 'Batch Requests/sec'
OR ( OBJECT_NAME = @CounterPrefix + 'SQL Statistics'
AND counter_name = 'SQL Compilations/sec'
-- Wait on Second between data collection
WAITFOR DELAY '00:00:01'
-- Capture the second counter set
SELECT CAST(2 AS INT) AS collection_instance ,
OBJECT_NAME ,
counter_name ,
instance_name ,
cntr_value ,
cntr_type ,
CURRENT_TIMESTAMP AS collection_time
INTO #perf_counters_second
FROM sys.dm_os_performance_counters
WHERE ( OBJECT_NAME = @CounterPrefix + 'Access Methods'
AND counter_name = 'Full Scans/sec'
OR ( OBJECT_NAME = @CounterPrefix + 'Access Methods'
AND counter_name = 'Index Searches/sec'
OR ( OBJECT_NAME = @CounterPrefix + 'Buffer Manager'
AND counter_name = 'Lazy Writes/sec'
OR ( OBJECT_NAME = @CounterPrefix + 'Buffer Manager'
AND counter_name = 'Page life expectancy'
OR ( OBJECT_NAME = @CounterPrefix + 'General Statistics'
AND counter_name = 'Processes Blocked'
OR ( OBJECT_NAME = @CounterPrefix + 'General Statistics'
AND counter_name = 'User Connections'
OR ( OBJECT_NAME = @CounterPrefix + 'Locks'
AND counter_name = 'Lock Waits/sec'
OR ( OBJECT_NAME = @CounterPrefix + 'Locks'
AND counter_name = 'Lock Wait Time (ms)'
OR ( OBJECT_NAME = @CounterPrefix + 'SQL Statistics'
AND counter_name = 'SQL Re-Compilations/sec'
OR ( OBJECT_NAME = @CounterPrefix + 'Memory Manager'
AND counter_name = 'Memory Grants Pending'
OR ( OBJECT_NAME = @CounterPrefix + 'SQL Statistics'
AND counter_name = 'Batch Requests/sec'
OR ( OBJECT_NAME = @CounterPrefix + 'SQL Statistics'
AND counter_name = 'SQL Compilations/sec'
-- Calculate the cumulative counter values
SELECT i.OBJECT_NAME ,
i.counter_name ,
i.instance_name ,
CASE WHEN i.cntr_type = 272696576
THEN s.cntr_value - i.cntr_value
WHEN i.cntr_type = 65792 THEN s.cntr_value
END AS cntr_value
FROM #perf_counters_init AS i
JOIN #perf_counters_second AS s
ON i.collection_instance + 1 = s.collection_instance
AND i.OBJECT_NAME = s.OBJECT_NAME
AND i.counter_name = s.counter_name
AND i.instance_name = s.instance_name
ORDER BY OBJECT_NAME
-- Cleanup tables
DROP TABLE #perf_counters_init
DROP TABLE #perf_counters_second
Please mark this reply as the answer or vote as helpful, as appropriate, to make it useful for other readers -
Guys,
This is my first time i generated a statspack report as the users were complaining slow response from datbase.
This report is taken when the reports that takes a long time were run.
This is my statspack report.
Message was edited by:
jkestelyHi,
FYI, some tuning guru's are developing an open source free tool to help analyze STATSPACK and AWR reports, which is helpful to beginners:
http://www.statspackanalyzer.com
Also, It may be be a good idea to publish your prouction SQL here (or anywhere else). I've seen DBA's get canned for disclosing proprietary details about their employers database . . . .
Also, a short duration snapshot is not so bad, and I often do on minute snaps when diagnosing a system. Anyhow, here are some observations from SP analyzer:
Hope this helps. . . .
Donald K. Burleson
Author of "Oracle 9i High Performance Tuning with STATSPACK" by Oracle Press
You have enabled system-level parallel query. This can influence the cost-based optimizer to favor full-table scans over index access. Consider using parallel hints instead, or invoking parallelism at the session level.
You may have an application issue causing excessive rollbacks with 47.62% rollbacks per transaction. Due to Oracle´s assumption of a commit, the rollback process is very expensive and should only be used when necessary. You can identify the specific SQL and user session that is executing the rollbacks by querying the v$sesstat view.
Remember that some applications may automatically perform rollback operations (commit-then-rollback or rollback-then-exit) after each commit. If this is the case, speak with your application developers to find out if there is a way to disable this. While these "empty rollbacks" do not incur performance expense, it will case this metric to appear very high.
You have high latch free waits of 1.3 per transaction. The latch free wait occurs when the process is waiting for a latch held by another process. Check the later section for the specific latch waits. Latch free waits are usually due to SQL without bind variables, but buffer chains and redo generation can also cause them.
You have 27,717.0 consistent gets examination per second. "Consistent gets - examination" is different than regular consistent gets. It is used to read undo blocks for consistent read purposes, but also for the first part of an index read and hash cluster I/O.
You have 203,044 table fetch continued row actions during this period. Migrated/chained rows always cause double the I/O for a row fetch and "table fetch continued row" (chained row fetch) happens when we fetch BLOB/CLOB columns (if the avg_row_len > db_block_size), when we have tables with > 255 columns, and when PCTFREE is too small. You may need to reorganize the affected tables with the dbms_redefintion utility and re-set your PCTFREE parameters to prevent future row chaining.
You have 1.1 long table full-table scans per second. This might indicate missing indexes, and you can run plan9i.sql to identify the specific tables and investigate the SQL to see if an index scan might result in faster execution. If your large table full table scans are legitimate, look at optimizing your db_file_multiblock_read_count parameter.
You have high small table full-table scans, at 1.7 per second. Verify that your KEEP pool is sized properly to cache frequently referenced tables and indexes.
You are not using your KEEP pool to cache frequently referenced tables and indexes. This may cause unnecessary I/O. When configured properly, the KEEP pool guarantees full caching of popular tables and indexes. Remember, an average buffer get is often 100 times faster than a disk read.
Any table or index that consumes > 10% of the data buffer, or tables & indexes that have > 50% of their blocks residing in the data buffer should be cached into the KEEP pool. You can fully automate this process using scripts. -
Strange SQL statement in my PL/SQL session
Hi all,
i found a very strange SQL statement in my session.
SELECT 1
FROM SYS.streams$_prepare_ddl p
WHERE ( (p.global_flag = 1 AND :1 IS NULL)
OR (p.global_flag = 0 AND p.usrid = :2)
AND ROWNUM = 1;
This statement is waiting latch wait event but consistent get higher and higher.
This session seems didn't execute my PL/SQL's main logic and halt at this statement.
And after 5 or 6 hours this session is error out with snapshot too old.
Does anyone know what this statement doing? according to Metalink for create table and create user statement will trigger this statement. But why it takes so long?
Looking forward for your advise...If you have a problem with latch events, then maybe this session or another session is doing a similar action quite often and using the latches.
I would check for some part of you application that constantly tries to create tables and/or users. Maybe it is possible to change that logic. E.g. use global temp tables.
Also post your database version. Did you migrate recently or is it a fresh install?
@user594309: Think more before posting. And read up about bind variables. -
Finding table fragmentation in Oracle 8.1.6.3.0
Hi All,
I just want to find table fragmentation for one table named LOG. I used below query to find this....
SQL> select table_name,round((blocks*8),2)||'kb' "size"
from dba_tables
where table_name = 'LOG' and owner='AMRWF1'; 2 3
TABLE_NAME size
LOG 6301408kb
SQL> select table_name,round((num_rows*avg_row_len/1024),2)||'kb' "size"
from dba_tables
where table_name = 'LOG' and owner='AMRWF1'; 2 3
TABLE_NAME size
LOG 1468846.2kbAnd tablespace infromation is below.
SQL> select bytes/1024/1024,TABLESPACE_NAME,EXTENTS,MAX_EXTENTS from dba_segments where owner='AMRWF1' and segment_name='LOG';
BYTES/1024/1024 TABLESPACE_NAME EXTENTS MAX_EXTENTS
6154.16406 WFMKTLEAST 12214 2147483645
SQL> sho parameter block
NAME TYPE VALUE
db_block_buffers integer 100000
db_block_checking boolean FALSE
db_block_checksum boolean FALSE
db_block_lru_latches integer 3
db_block_max_dirty_target integer 100000
db_block_size integer 8192
db_file_multiblock_read_count integer 8
hash_multiblock_io_count integer 0
sort_multiblock_read_count integer 2Please mention whether i am fallowing proper method to find table fragmentation and this table is severly fragmented or not???
-Yasser
Edited by: YasserRACDBA on May 12, 2009 7:17 PMSir Please refer below statspack report
STATSPACK report for
Snap Length
Start Id End Id Start Time End Time (Minutes)
201 213 13-May-09 01:32:02 13-May-09 01:51:30 19.47
Cache Sizes
~~~~~~~~~~~
db_block_buffers: 100000
db_block_size: 8192
log_buffer: 2097152
shared_pool_size: 132003840
Load Profile
~~~~~~~~~~~~
Per Second Per Transaction
Redo size: 186,962.61 2,244.02
Logical reads: 18,690.20 224.33
Block changes: 835.84 10.03
Physical reads: 1,422.98 17.08
Physical writes: 59.20 0.71
User calls: 693.17 8.32
Parses: 219.19 2.63
Hard parses: 95.50 1.15
Sorts: 122.47 1.47
Transactions: 83.32
Rows per Sort: 13.87
Pct Blocks changed / Read: 4.47
Recursive Call Pct: 57.35
Rollback / transaction Pct: 0.01
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait Ratio: 99.82
Buffer Hit Ratio: 92.39
Library Hit Ratio: 85.79
Redo NoWait Ratio: 99.99
In-memory Sort Ratio: 100.00
Soft Parse Ratio: 56.43
Latch Hit Ratio: 99.55
Top 5 Wait Events
~~~~~~~~~~~~~~~~~ Wait % Total
Event Waits Time (cs) Wt Time
log file sync 98,328 308,489 52.94
db file sequential read 1,462,138 135,491 23.25
buffer busy waits 40,122 41,574 7.13
log file parallel write 67,541 29,561 5.07
latch free 14,153 29,250 5.02
^LWait Events for DB: PRDTDB Instance: prdtdb Snaps: 201 - 213
->cs - centisecond - 100th of a second
->ms - millisecond - 1000th of a second (unit often used for disk IO timings)
Avg
Total Wait wait Waits
Event Waits Timeouts Time (cs) (ms) /txn
log file sync 98,328 4 308,489 31 1.0
db file sequential read 1,462,138 0 135,491 1 15.0
buffer busy waits 40,122 1 41,574 10 0.4
log file parallel write 67,541 8 29,561 4 0.7
latch free 14,153 10,702 29,250 21 0.1
db file parallel write 5,099 0 18,117 36 0.1
db file scattered read 18,561 0 9,258 5 0.2
db file parallel read 3,227 0 5,658 18 0.0
SQL*Net more data to client 44,457 0 1,188 0 0.5
log file sequential read 8,020 0 1,070 1 0.1
direct path write 410 0 669 16 0.0
direct path read 688 0 556 8 0.0
control file parallel write 444 0 533 12 0.0
library cache pin 517 0 461 9 0.0
LGWR wait for redo copy 798 143 414 5 0.0
log file switch completion 30 0 349 116 0.0
single-task message 4 0 27 68 0.0
file open 959 0 23 0 0.0
log file single write 20 0 7 4 0.0
control file sequential read 458 0 4 0 0.0
refresh controlfile command 36 0 3 1 0.0
enqueue 9 0 2 2 0.0
file identify 40 0 1 0 0.0
SQL*Net break/reset to clien 4 0 0 0 0.0
buffer deadlock 2 2 0 0 0.0
SQL*Net message from client 809,303 0 19,936,895 246 8.3
virtual circuit status 38 38 116,785 ##### 0.0
SQL*Net message to client 809,327 0 310 0 8.3
SQL*Net more data from clien 477 0 43 1 0.0
^LSQL ordered by Gets for DB: PRDTDB Instance: prdtdb Snaps: 201 - 213
Gets % of
Buffer Gets Executes per Exec Total Hash Value
SQL statement
262,083 159,120 1.6 1.2 382965845
SELECT GEOPAR,NAME FROM GEO WHERE GEOCOD = RTRIM(:b1)
146,040 1 146,040.0 .7 1754824507
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09120A
141,075 1 141,075.0 .6 1542925332
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09120A
128,943 12,612 10.2 .6 4085293067
UPDATE OBJECT SET OWNER = NULL, LOCKTIME = 0, QUEUE_TIMESTAMP = NULL WHERE "ID
91,085 1 91,085.0 .4 323282248
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09126A
90,887 1 90,887.0 .4 2613220927
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09126A
66,045 9,174 7.2 .3 3352553713
SELECT DOC_NUM,TITLE,AUTHOR,C.TYPE,DATE_RPT,S.COLLECTION,S.AUTOMATION,LANG,SOU
61,337 9,498 6.5 .3 2345958421
SELECT PAGENO PAGENO FROM NONBILL WHERE REPORTID = :b1
59,669 9,500 6.3 .3 4181220996
SELECT RTRIM(SUBCOLLECT) SUBCOLLECT_CODE FROM MARK_SUBCOLLECT WHERE SRCCOD
54,543 1 54,543.0 .2 2236963897
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09128A
54,517 1 54,517.0 .2 2215353317
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09128A
54,493 1 54,493.0 .2 1430216754
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09128A
54,450 1 54,450.0 .2 3671439846
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09128A
54,443 1 54,443.0 .2 4024618165
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09128A
54,404 1 54,404.0 .2 4144413353
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09128A
54,185 1 54,185.0 .2 3853441439
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09128A
54,122 1 54,122.0 .2 4066390851
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09128A
^LSQL ordered by Reads for DB: PRDTDB Instance: prdtdb Snaps: 201 - 213
Physical Reads % of
Reads Executes per Exec Total Hash Value
SQL statement
52,578 1 52,578.0 3.2 1754824507
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09120A
31,998 1 31,998.0 1.9 2613220927
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09126A
16,013 1 16,013.0 1.0 323282248
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09126A
10,819 1 10,819.0 .7 1542925332
SELECT ERROR,TIME_STAMP,O_RESOURCE,QUEUE,NEW_QUEUE FROM LOG WHERE ID = '09120A
5,940 9,500 0.6 .4 1788460650
SELECT RTRIM(SUBJCT) TICKER,RTRIM(NAME) NAME,RTRIM(STATE) STATE,RTRIM(COUNTRY)
5,011 5 1,002.2 .3 1283665788
INSERT INTO STATS$SQL_SUMMARY ( SNAP_ID,DBID,INSTANCE_NUMBER,SQL_TEXT,SHARABLE
3,532 104 34.0 .2 2416764375
INSERT INTO DOC_SUBJCT ( DOC_NUM,TYPE,SUBJCT ) VALUES ( TO_NUMBER(:b1),:b2,:b
3,178 3 1,059.3 .2 2869630514
BEGIN statspack.snap(i_snap_level => 10, i_modify_parameter => 'true'); END;
1,576 9,174 0.2 .1 3352553713
SELECT DOC_NUM,TITLE,AUTHOR,C.TYPE,DATE_RPT,S.COLLECTION,S.AUTOMATION,LANG,SOU
816 1,753 0.5 .0 2074917603
INSERT INTO LOG (ID,TIME_STAMP,TYPE,ERROR,INSTANCE,RULE_NUM,RULE_TYPE,PRIORITY
754 324 2.3 .0 4111801531
begin packager.get_citation(:param1 , :out); end;
567 83 6.8 .0 924335069
INSERT INTO CORDOC ( DOC_NUM,PARENT_DOC,SOURCE,AUTHOR,TITLE,DATE_RPT,DATE_RCVD
441 9,500 0.0 .0 2184883084
SELECT TPCCOD,TPCNAM FROM TOPICS T,DOC_SUBJCT D WHERE D.DOC_NUM = :b1 AND
430 104 4.1 .0 2993182807
INSERT INTO DOC_SUBJCT_UPD_LOG ( DOC_NUM,TYPE,SUBJCT,TYPE_OF_CHANGE,CREATED_LO
406 9,498 0.0 .0 2345958421
SELECT PAGENO PAGENO FROM NONBILL WHERE REPORTID = :b1
304 414 0.7 .0 199702406
select i.obj#,i.ts#,i.file#,i.block#,i.intcols,i.type#,i.flags, i.property,i.p
300 7,733 0.0 .0 3207681720
SELECT NVL(IMAGES,0) IMAGES,NVL(NONBILLABLE,0) NONBILLABLE FROM IMAGED_DOCUM
^LSQL ordered by Rows for DB: PRDTDB Instance: prdtdb Snaps: 201 - 213
Rows Rows
Processed Executes per Exec Hash Value
SQL statement
87,357 159,120 0.5 382965845
SELECT GEOPAR,NAME FROM GEO WHERE GEOCOD = RTRIM(:b1)
32,818 9,498 3.5 2345958421
SELECT PAGENO PAGENO FROM NONBILL WHERE REPORTID = :b1
12,612 12,612 1.0 4085293067
UPDATE OBJECT SET OWNER = NULL, LOCKTIME = 0, QUEUE_TIMESTAMP = NULL WHERE "ID
9,544 9,544 1.0 1230017382
SELECT LOG_SEQUENCE.NEXTVAL FROM DUAL
9,498 9,498 1.0 2684256693
SELECT RTRIM(NAME) NAME FROM LANG WHERE LANG.CODE = :b1
9,174 9,174 1.0 3352553713
SELECT DOC_NUM,TITLE,AUTHOR,C.TYPE,DATE_RPT,S.COLLECTION,S.AUTOMATION,LANG,SOU
7,575 7,733 1.0 3207681720
SELECT NVL(IMAGES,0) IMAGES,NVL(NONBILLABLE,0) NONBILLABLE FROM IMAGED_DOCUM
7,526 9,500 0.8 1788460650
SELECT RTRIM(SUBJCT) TICKER,RTRIM(NAME) NAME,RTRIM(STATE) STATE,RTRIM(COUNTRY)
6,485 514 12.6 395844583
select name,intcol#,segcol#,type#,length,nvl(precision#,0),decode(type#,2,nvl(
3,308 9,499 0.3 3612837332
SELECT RTRIM(D.SUBJCT) INDCOD,RTRIM(INDNAM) INDNAM,NIC_COD_BEST FROM DOC_SUB
2,642 9,500 0.3 4181220996
SELECT RTRIM(SUBCOLLECT) SUBCOLLECT_CODE FROM MARK_SUBCOLLECT WHERE SRCCOD
1,753 1,753 1.0 2074917603
INSERT INTO LOG (ID,TIME_STAMP,TYPE,ERROR,INSTANCE,RULE_NUM,RULE_TYPE,PRIORITY
1,380 1,855 0.7 1867085649
INSERT INTO LOG (ID,TIME_STAMP,TYPE,ERROR,INSTANCE,RULE_NUM,RULE_TYPE,PRIORITY
1,347 359 3.8 1536916657
select con#,type#,condlength,intcols,robj#,rcon#,match#,refact,nvl(enabled,0),
870 104 8.4 2416764375
INSERT INTO DOC_SUBJCT ( DOC_NUM,TYPE,SUBJCT ) VALUES ( TO_NUMBER(:b1),:b2,:b
828 433 1.9 1943674664
SELECT CLASS, PRIVILEGE FROM PRIVILEGE WHERE GROUP_NAME = 'SYSADMIN'
723 433 1.7 2958422142
SELECT CLASS, PRIVILEGE FROM PRIVILEGE WHERE GROUP_NAME = 'DEFAULT'
^LLatch Activity for DB: PRDTDB Instance: prdtdb Snaps: 201 - 213
->"Pct Misses" should be very close to 0.0
Pct Avg Pct
Get Get Sleeps Nowait Nowait
Latch Name Requests Miss /Miss Requests Miss
Active checkpoint queue latch 82,223 0.0 0
Checkpoint queue latch 828,701 0.0 0.0 0
Token Manager 739 0.0 5,586 0.0
archive control 10 0.0 0
archive process latch 10 0.0 0
cache buffer handles 8,728 0.0 0
cache buffers chains 45,374,520 0.0 0.1 1,915,719 0.2
cache buffers lru chain 293,252 0.5 0.1 1,667,702 0.6
channel handle pool latch 293 0.0 294 0.0
channel operations parent latch 586 0.0 294 0.0
dml lock allocation 197,311 0.0 0.0 0
enqueue hash chains 438,592 0.1 0.1 0
enqueues 697,793 0.1 0.0 0
event group latch 293 0.0 0
job_queue_processes parameter l 65 0.0 0
ktm global data 4 0.0 0
latch wait list 6,541 2.5 0.0 6,559 0.2
library cache 6,095,682 0.9 0.2 186,918 0.8
library cache load lock 4,494 0.0 0
list of block allocation 201,252 0.0 0.1 0
loader state object freelist 46 0.0 0
longop free list 1,508 0.0 0
messages 925,509 0.2 0.0 0
multiblock read objects 45,236 0.0 4.6 3 0.0
ncodef allocation latch 65 0.0 0
process allocation 293 0.0 293 0.0
process group creation 587 0.0 0
redo allocation 624,066 0.1 0.0 0
redo writing 511,337 0.8 0.0 0
row cache objects 9,553,633 1.0 0.0 13,023 3.7
sequence cache 31,263 0.0 0.0 0
session allocation 454,171 0.3 0.0 0
session idle bit 1,841,211 0.0 0.1 0
session switching 65 0.0 0
session timer 416 0.0 0
shared pool 4,602,509 3.3 0.0 0
sort extent pool 78 0.0 0
transaction allocation 295,180 0.0 0.0 0
transaction branch allocation 65 0.0 0
undo global data 346,591 0.1 0.2 0
user lock 2,114 0.0 0
virtual circuit queues 56 0.0 0
^LLatch Sleep breakdown for DB: PRDTDB Instance: prdtdb Snaps: 201 - 21
Get Spin &
Latch Name Requests Misses Sleeps Sleeps 1-4
shared pool 4,602,509 152,786 3,804 150445/1393/
698/250/0
row cache objects 9,553,633 98,968 364 98730/210/3/
25/0
library cache 6,095,682 53,621 8,107 49775/1473/1
726/647/0
cache buffers chains 45,374,520 10,906 1,415 10308/336/71
/191/0
redo writing 511,337 3,927 39 3892/31/4/0/
0
messages 925,509 1,443 61 1382/61/0/0/
0
cache buffers lru chain 293,252 1,388 130 1260/127/0/1
/0
session allocation 454,171 1,334 15 1319/15/0/0/
0
enqueues 697,793 1,000 11 989/11/0/0/0
redo allocation 624,066 623 5 618/5/0/0/0
session idle bit 1,841,211 447 50 400/46/0/1/0
Checkpoint queue latch 828,701 378 8 374/3/0/1/0
undo global data 346,591 330 62 315/4/1/10/0
enqueue hash chains 438,592 273 32 259/7/2/5/0
transaction allocation 295,180 138 5 133/5/0/0/0
dml lock allocation 197,311 46 2 44/2/0/0/0
list of block allocation 201,252 40 4 36/4/0/0/0
multiblock read objects 45,236 7 32 2/1/1/3/0
^LLatch Miss Sources for DB: PRDTDB Instance: prdtdb Snaps: 201 - 213
No Wait
Latch Name Where Misses Sleeps
Checkpoint queue latch kcbswcu: Switch buffers 0 5
Checkpoint queue latch kcbk0rrd: update recovery 0 2
Checkpoint queue latch kcbbcthc: check thread que 0 1
cache buffers chains kcbrls: kslbegin 0 724
cache buffers chains kcbgtcr: kslbegin 0 533
cache buffers chains kcbgcur: kslbegin 0 62
cache buffers chains kcbchg: kslbegin: call CR 0 29
cache buffers chains kcbzgb: scan from tail. no 0 25
cache buffers chains kcbzib: multi-block read: 0 14
cache buffers chains kcbzib: finish free bufs 0 9
cache buffers chains kcbzwb 0 8
cache buffers chains kcbchg: kslbegin: bufs not 0 6
cache buffers chains kcbget: pin buffer 0 3
cache buffers chains kcbget: exchange rls 0 1
cache buffers lru chain kcbbiop: lru scan 0 105
cache buffers lru chain kcbzgb: multiple sets nowa 0 21
cache buffers lru chain kcbzgb: posted for free bu 0 3
cache buffers lru chain kcbbwlru 0 1
dml lock allocation ktaiam 0 2
enqueue hash chains ksqgtl3 0 16
enqueue hash chains ksqrcl 0 16
enqueues ksqgtl2 0 5
enqueues ksqies 0 4
enqueues ksqrcl 0 2
library cache kgllkdl: child: cleanup 0 895
library cache kglpnal: child: alloc spac 0 711
library cache kglic 0 344
library cache kglupc: child 0 261
library cache kglhdgn: child: 0 227
library cache kglpnal: child: before pro 0 116
library cache kglhdgc: child: 0 82
library cache kglobpn: child: 0 74
library cache kgldnp: child 0 57
library cache kglsca: parent 0 57
library cache kgllkdl: child: free pin 0 29
library cache kglati 0 27
library cache kglpnc: child 0 15
library cache kgldte: child 0 0 8
library cache kglget: child: KGLDSBYD 0 3
library cache kglobld: child: 0 2
library cache kglpin 0 2
library cache kgldti: not under latch 0 1
library cache kglpnp: child 0 1
list of block allocation ktlbbl 0 4
messages ksaamb: after wakeup 0 40
messages ksarcv: after wait 0 13
messages ksarcv 0 8
multiblock read objects kcbzib: MBRGET 0 32
redo allocation kcrfwr: redo allocation 0 4
redo allocation kcrfwi: before write 0 1
redo writing kcrfss 0 17
redo writing kcrfsr 0 16
redo writing kcrfwi: after write 0 5
redo writing kcrfwcr 0 1
row cache objects kqrpre: find obj 0 190
^LLatch Miss Sources for DB: PRDTDB Instance: prdtdb Snaps: 201 - 213
No Wait
Latch Name Where Misses Sleeps
row cache objects kqreqd: rel enqueue 0 93
row cache objects kqreqd 0 64
row cache objects kqrso 0 1
session allocation ksuxds: not user session 0 12
session allocation ksucri 0 2
session allocation ksuxds: KSUSFCLC not set 0 1
session idle bit ksuxds 0 22
session idle bit ksupuc: clear busy 0 17
session idle bit ksupuc: set busy 0 11
shared pool kghfrunp: parent clatch: w 0 5,059
shared pool kghfrunp: alloc: wait 0 1,296
shared pool kghfrunp: alloc: clatch no 0 1,152
shared pool kghalo 0 852
shared pool kghfnd: min scan 0 180
shared pool kghfrunp: clatch: wait 0 112
shared pool kghupr1 0 104
shared pool kghfnd: get next extent 0 72
shared pool kghfnd: req scan 0 55
shared pool kghfre 0 40
shared pool kghalp 0 31
shared pool kghfrunp: clatch: nowait 0 30
shared pool kghfen: not perm alloc cla 0 15
shared pool kghfrunp: no latch 0 2
shared pool kghfrunp: reget min scan 0 1
transaction allocation ktcdso 0 3
transaction allocation ktcxba 0 2
undo global data ktudba: KSLBEGIN 0 61
undo global data ktudnx: KSLBEGIN 0 1
End of ReportPlease find partial output of v$sql;
EXECUTIONS DISK_READS BUFFER_GETS ROWS_PROCESSED
11170 0 0 0
11726 6206 36460 11286
11727 3079 193977 11727
12007 278 69951 39346
12700 0 31165 43631
13371 564 26871 7113
15568 0 1045 0
16122 28 25925 8603
16583 292 10230 2016
16943 31 1092 209
17933 896 35957 17933
EXECUTIONS DISK_READS BUFFER_GETS ROWS_PROCESSED
17958 0 3675 0
22750 6968 132458 32748
22840 518 31455 43631
22840 1 37398 0
22976 109 46286 22966
23002 53 23280 22975
23002 16 23216 23002
23003 61 23362 23003
23005 764 78363 23003
25580 1303 81762 373057
27092 0 0 0
EXECUTIONS DISK_READS BUFFER_GETS ROWS_PROCESSED
29218 1069 88739 29218
32750 3 1020 355
35790 453 279237 27807
38630 488 116142 1331
42128 13 2679 180
45899 0 229499 45896
45984 87 230393 45984
50588 3 1931 145
51215 81 256945 51215
52212 9 2248 674
62501 2 2087 506
EXECUTIONS DISK_READS BUFFER_GETS ROWS_PROCESSED
75230 1393 950678 71295
95712 29410 1451214 87782
102950 5250 1694896 102950
165722 254 870666 165722
527966 790 2773361 527965
674310 190 5482921 674307
709403 1198 3727110 709403
1093841 2338 11416812 1093840Btree index type has been created.
Please guide me in finding CPU problem.
-Yasser -
Dear all,
Recently we do a test. 800 users update the same table but different rows simultaneously. Our database was hung,we had to wait a long time to connect to database using "sqlplus". The statspack report is as below.Could you provide us some suggestions for tuning?
Thanks in advance.
Regards,
Tom
STATSPACK report for
DB Name DB Id Instance Inst Num Release OPS Host
ORCL 1046842006 ORCL 1 8.1.7.4.0 NO tk3ctree
Snap Id Snap Time Sessions
Begin Snap: 43 08-Aug-06 12:29:25 1,665
End Snap: 44 08-Aug-06 13:29:46 1,665
Elapsed: 60.35 (mins)
Cache Sizes
~~~~~~~~~~~
db_block_buffers: 327680 log_buffer: 3145728
db_block_size: 8192 shared_pool_size: 1073741824
Load Profile
~~~~~~~~~~~~ Per Second Per Transaction
Redo size: 73,560.47 13,420.79
Logical reads: 30,447.05 5,554.93
Block changes: 635.07 115.87
Physical reads: 5,391.32 983.62
Physical writes: 83.34 15.21
User calls: 753.23 137.42
Parses: 308.06 56.20
Hard parses: 166.39 30.36
Sorts: 46.69 8.52
Logons: 2.01 0.37
Executes: 359.36 65.56
Transactions: 5.48
% Blocks changed per Read: 2.09 Recursive Call %: 23.29
Rollback per transaction %: 0.49 Rows per Sort: 87.86
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Buffer Nowait %: 99.72 Redo NoWait %: 100.00
Buffer Hit %: 82.29 In-memory Sort %: 99.99
Library Hit %: 85.34 Soft Parse %: 45.99
Execute to Parse %: 14.28 Latch Hit %: 92.61
Parse CPU to Parse Elapsd %: 0.45 % Non-Parse CPU: 67.57
Shared Pool Statistics Begin End
Memory Usage %: 89.70 71.75
% SQL with executions>1: 46.36 57.72
% Memory for SQL w/exec>1: 29.37 30.25
Top 5 Wait Events
~~~~~~~~~~~~~~~~~ Wait % Total
Event Waits Time (cs) Wt Time
latch free 49,611,355 164,421,617 82.40
buffer busy waits 304,076 19,384,483 9.72
enqueue 43,129 11,328,951 5.68
library cache pin 10,327 2,964,294 1.49
library cache load lock 2,117 622,060 .31
Wait Events for DB: ORCL Instance: ORCL Snaps: 43 -44
-> cs - centisecond - 100th of a second
-> ms - millisecond - 1000th of a second
-> ordered by wait time desc, waits desc (idle events last)
Avg
Total Wait wait Waits
Event Waits Timeouts Time (cs) (ms) /txn
latch free 49,611,355 ########## ########### 33 ######
buffer busy waits 304,076 187,341 19,384,483 637 15.3
enqueue 43,129 41,040 11,328,951 2627 2.2
library cache pin 10,327 9,478 2,964,294 2870 0.5
library cache load lock 2,117 1,913 622,060 2938 0.1
db file scattered read 2,643,233 0 397,896 2 133.2
db file sequential read 2,043,841 0 238,924 1 103.0
SQL*Net more data to client 238,898 0 64,516 3 12.0
log file sync 18,183 53 22,743 13 0.9
row cache lock 68 63 19,957 2935 0.0
direct path write 14,842 0 19,106 13 0.7
library cache lock 124 46 18,097 1459 0.0
log file parallel write 17,184 0 12,926 8 0.9
db file parallel write 9,801 0 6,050 6 0.5
direct path read 17,578 0 3,450 2 0.9
file open 26,958 0 2,941 1 1.4
SQL*Net message from dblink 3,749 0 984 3 0.2
inactive session 8 6 616 770 0.0
control file parallel write 1,188 0 489 4 0.1
SQL*Net break/reset to clien 219 0 443 20 0.0
log file sequential read 8,194 0 350 0 0.4
log file switch completion 25 0 76 30 0.0
LGWR wait for redo copy 391 0 13 0 0.0
control file sequential read 183 0 10 1 0.0
refresh controlfile command 10 0 2 2 0.0
log file single write 2 0 2 10 0.0
db file parallel read 1 0 2 20 0.0
SQL*Net message to dblink 3,749 0 0 0 0.2
SQL*Net more data from dblin 14 0 0 0 0.0
file identify 10 0 0 0 0.0
SQL*Net message from client 2,713,217 0 ########### 1488 136.7
SQL*Net more data from clien 4,029 0 21,486 53 0.2
SQL*Net message to client 2,713,315 0 1,230 0 136.7
Background Wait Events for DB: ORCL Instance: ORCL Snaps: 43 -44
-> ordered by wait time desc, waits desc (idle events last)
Avg
Total Wait wait Waits
Event Waits Timeouts Time (cs) (ms) /txn
log file parallel write 17,259 0 12,940 7 0.9
latch free 1,306 1,093 8,725 67 0.1
db file parallel write 9,805 0 6,077 6 0.5
control file parallel write 1,188 0 489 4 0.1
log file sequential read 8,194 0 350 0 0.4
db file scattered read 141 0 143 10 0.0
direct path read 635 0 41 1 0.0
LGWR wait for redo copy 394 0 13 0 0.0
db file sequential read 267 0 6 0 0.0
file open 1,212 0 5 0 0.1
log file single write 2 0 2 10 0.0
direct path write 185 0 1 0 0.0
control file sequential read 120 0 0 0 0.0
file identify 5 0 0 0 0.0
rdbms ipc message 90,696 13,617 5,072,179 559 4.6
pmon timer 3,408 1,141 359,741 1056 0.2
smon timer 16 8 359,244 ###### 0.0
-------------------------------------------------------------Hi, vingkuan
Thanks for your support. The following is the rear part of the statspack report.
From report, we found the latch "share pool" and "library cache" and
"cache buffer lru chain" is the three higher "Pct get misss". Are the
latch free contention at the three latches? Could you review the report
again and give us some advice to tune? Thanks very much.
Regards,
Tom
Latch Activity for DB: ORCL Instance: ORCL Snaps: 43 -44
->"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 Pct
Get Get Slps NoWait NoWait
Latch Name Requests Miss /Miss Requests Miss
Token Manager 26,167 0.0 4,478,317 0.0
active checkpoint queue latch 69,726 0.0 0.0 0
archive control 2 0.0 0
archive process latch 2 0.0 0
begin backup scn array 2 0.0 0
cache buffer handles 33,742 0.0 0
cache buffers chains 220,676,648 0.2 0.1 35,918,936 0.2
cache buffers lru chain 20,771,889 7.4 0.0 20,191,866 8.1
channel handle pool latch 4,130 0.0 0
channel operations parent lat 6,246 0.0 0
checkpoint queue latch 1,101,411 0.0 0.2 0
constraint object allocation 30 0.0 0
dictionary lookup 4 0.0 0
dml lock allocation 50,326 0.0 0.0 0
enqueue hash chains 323,864 0.4 0.5 0
enqueues 197,585 0.1 0.0 0
event group latch 2,096 0.0 0
global transaction 22,775 0.0 0
global tx free list 284 0.0 0
global tx hash mapping 1,897 0.0 0
job_queue_processes parameter 1,133 0.0 0
ktm global data 16 0.0 0
latch wait list 19,656,251 3.2 0.1 21,691,586 5.2
library cache 40,840,168 23.5 3.6 1,565,163 ######
library cache load lock 65,369 0.1 0.0 0
list of block allocation 86,025 0.0 0.0 0
loader state object freelist 140 0.0 0
longop free list 4,637,367 3.8 0.0 0
message pool operations paren 4 0.0 0
messages 314,634 0.4 0.0 0
multiblock read objects 6,028,268 4.9 0.1 0
ncodef allocation latch 1,133 0.0 0
process allocation 2,096 0.3 1.4 2,094 0.1
process group creation 4,130 0.0 0
redo allocation 1,595,642 0.5 0.0 0
redo writing 161,070 0.2 0.0 0
row cache objects 24,061,026 7.2 0.1 4 ######
sequence cache 7,187 0.1 0.8 0
session allocation 95,643 0.5 1.8 0
session idle bit 5,483,102 0.0 0.0 0
session switching 1,295 0.0 0
shared pool 28,390,234 48.9 1.0 0
sort extent pool 2,438 0.2 26.7 0
transaction allocation 178,785 0.0 0.0 0
transaction branch allocation 7,907 0.0 0
undo global data 6,427,727 0.1 0.1 0
user lock 9,896 0.4 1.5 0
Latch Sleep breakdown for DB: ORCL Instance: ORCL Snaps: 43 -44
-> ordered by misses desc
Get Spin &
Latch Name Requests Misses Sleeps Sleeps 1->4
shared pool 28,390,234 13,875,597 14,406,098 6595042/3587
749/1965785/
1727021/0
library cache 40,840,168 9,580,911 34,851,206 1758740/6400
80/1569018/5
613073/0
row cache objects 24,061,026 1,730,156 191,924 1594691/1184
29/8406/8630
/0
cache buffers lru chain 20,771,889 1,526,938 44,413 1482966/4353
5/433/4/0
latch wait list 19,656,251 621,301 33,757 591864/25198
/4158/81/0
cache buffers chains 220,676,648 360,082 47,118 320495/32759
/6237/591/0
multiblock read objects 6,028,268 296,220 24,783 289590/6449/
88/93/0
longop free list 4,637,367 175,442 3,078 172401/3004/
37/0/0
undo global data 6,427,727 9,512 921 8605/893/14/
0/0
redo allocation 1,595,642 8,031 100 7934/94/3/0/
0
messages 314,634 1,226 22 1204/22/0/0/
0
enqueue hash chains 323,864 1,215 569 751/375/73/1
6/0
session idle bit 5,483,102 624 27 597/27/0/0/0
session allocation 95,643 512 903 151/293/10/5
8/0
redo writing 161,070 267 11 257/9/1/0/0
enqueues 197,585 197 2 195/2/0/0/0
checkpoint queue latch 1,101,411 128 31 97/31/0/0/0
user lock 9,896 39 57 4/24/10/1/0
process allocation 2,096 7 10 0/6/0/1/0
sort extent pool 2,438 6 160 0/0/0/6/0
sequence cache 7,187 5 4 1/4/0/0/0
Latch Miss Sources for DB: ORCL Instance: ORCL Snaps: 43 -44
-> only latches with sleeps are shown
-> ordered by name, sleeps desc
NoWait Waiter
Latch Name Where Misses Sleeps Sleeps
cache buffers chains kcbrls: kslbegin 0 35,326 4,434
cache buffers chains kcbgtcr: kslbegin 0 7,017 38,834
cache buffers chains kcbzib: multi-block read: 0 1,816 0
cache buffers chains kcbzwb 0 1,438 1,685
cache buffers chains kcbchg: kslbegin: bufs not 0 744 366
cache buffers chains kcbzib: finish free bufs 0 422 1,209
cache buffers chains kcbzgb: scan from tail. no 0 157 0
cache buffers chains kcbgcur: kslbegin 0 38 165
cache buffers chains kcbchg: kslbegin: call CR 0 7 251
cache buffers chains kcbgtcr 0 7 0
cache buffers chains kcbget: pin buffer 0 5 3
cache buffers chains kcbbwb1 0 4 0
cache buffers chains kcbnlc 0 2 35
cache buffers chains kcbcge 0 1 85
cache buffers lru chain kcbzgb: multiple sets nowa 0 34,264 0
cache buffers lru chain kcbzar: KSLNBEGIN 0 7,398 41,454
cache buffers lru chain kcbbiop: lru scan 0 1,807 2
cache buffers lru chain kcbzgm 0 762 2,644
cache buffers lru chain kcbgtcr:CR Scan:KCBRSKIP 0 5 174
cache buffers lru chain kcbzgb: posted for free bu 0 1 5
checkpoint queue latch kcbk0rrd: update recovery 0 29 0
checkpoint queue latch kcbklbc: Link buffer into 0 1 10
checkpoint queue latch kcbkllrba: compute lowest 0 1 28
cost function kzulgt: find user res 0 39 42
cost function kzulrl 0 18 15
enqueue hash chains ksqcmi: get hash chain lat 0 236 410
enqueue hash chains ksqrcl 0 232 47
enqueue hash chains ksqcmi: kslgpl 0 85 80
enqueue hash chains ksqcmi: if deadlock detect 0 6 3
enqueue hash chains ksqgtl3 0 6 26
enqueues ksqdel 0 1 0
enqueues ksqgel: create enqueue 0 1 0
latch wait list kslfre ####### 28,991 23,206
latch wait list kslges ####### 4,705 10,534
library cache kglhdgc: child: 0 8,914,013 #######
library cache kgldti: 2child 0 5,633,266 #######
library cache kgllkdl: child: cleanup 0 2,698,054 #######
library cache kglupc: child 0 1,693,785 #######
library cache kglhdgn: child: 0 1,012,271 #######
library cache kglpnal: child: before pro 0 992,487 #######
library cache kglpnal: child: alloc spac 0 391,599 #######
library cache kglati 0 64,114 2,399
library cache kglobpn: child: 0 58,370 #######
library cache kglpin 0 44,681 13,291
library cache kglic 0 35,663 #######
library cache kgllkdl: child: free pin 0 23,806 #######
library cache kglnti 0 23,156 2,531
library cache kgllkal: parent 0 7,641 525
library cache kgllldl: parent: 0 7,634 273
library cache kglobld: child: 0 5,913 #######
library cache kglpnc: child 0 5,713 85,400
library cache kgldtld: 2child 0 4,534 837
library cache kglget: child: KGLDSBRD 0 1,620 7,561
Latch Miss Sources for DB: ORCL Instance: ORCL Snaps: 43 -44
-> only latches with sleeps are shown
-> ordered by name, sleeps desc
NoWait Waiter
Latch Name Where Misses Sleeps Sleeps
library cache kgldnp: child 0 1,539 #######
library cache kglrtl 0 1,539 446
library cache kglget: child: KGLDSBYD 0 825 29,136
library cache kglpndl: parent: purge 0 737 34
library cache kglidp: parent 0 697 9
library cache kgldrp: parent 0 472 29
library cache kgldte: child 0 0 412 #######
library cache kglpnal: child: check gran 0 124 7,738
library cache kglini: child 0 78 7,252
library cache kglpnp: child 0 55 2,192
library cache kglpnal: parent held, no p 0 13 0
library cache kglalt: parent 0 10 0
library cache kgllkal: child: in loop 0 2 169
longop free list ksuloget 0 3,018 3,077
longop free list ksulofree 0 5 0
messages ksaamb: after wakeup 0 16 13
messages ksarcv: after wait 0 5 7
messages ksarcv 0 1 2
multiblock read objects kcbzib: MBRGET 0 21,690 15,597
multiblock read objects kcbzib: MBRFRE 0 2,986 9,146
process allocation ksuapc 2 10 10
redo allocation kcrfwr: redo allocation 0 98 99
redo allocation kcrfwi: before write 0 1 0
redo allocation kcrfwi: more space 0 1 1
redo writing kcrfsr 0 6 0
redo writing kcrfss 0 4 10
redo writing kcrfwi: after write 0 1 0
row cache objects kqrpre: find obj 0 172,567 #######
row cache objects kqreqd: rel enqueue 0 8,918 9,508
row cache objects kqreqd 0 7,019 66,980
row cache objects kqrpsc: incr stat 0 1,476 1
row cache objects kqrplk 0 106 5
row cache objects kqrso 0 31 11
row cache objects kqrpre: init complete 0 12 66
row cache objects kqriec2 0 2 3
row cache objects kqrsrd 0 1 4
sequence cache kdnnxt: cached seq 0 4 0
session allocation ksuprc 0 430 2
session allocation ksuxds: KSUSFCLC not set 0 301 122
session allocation ksucrp 0 169 357
session allocation ksucri 0 1 629
session allocation ksuxds: not user session 0 1 200
session idle bit ksupuc: set busy 0 19 7
session idle bit ksupuc: clear busy 0 8 20
shared pool kghfrunp: clatch: wait 0 ########## #######
shared pool kghfrunp: alloc: clatch no 0 6,271,243 0
shared pool kghalo 0 3,419,365 #######
shared pool kghfrunp: alloc: wait 0 2,994,604 #######
shared pool kghfre 0 289,068 #######
shared pool kghupr1 0 279,000 #######
shared pool kghfrunp: clatch: nowait 0 239,126 0
shared pool kghfnd: get next extent 0 213,944 0
shared pool kghfnd: min scan 0 184,172 0
Latch Miss Sources for DB: ORCL Instance: ORCL Snaps: 43 -44
-> only latches with sleeps are shown
-> ordered by name, sleeps desc
NoWait Waiter
Latch Name Where Misses Sleeps Sleeps
shared pool kghfen: not perm alloc cla 0 101,266 #######
shared pool kghfrunp: reget min scan 0 87,495 0
shared pool kghalp 0 83,579 #######
shared pool kghfrunp: no latch 0 69,513 0
shared pool kghfnd: req scan 0 23,919 0
shared pool kghfrunp: holding latch 0 7,029 0
shared pool kghfru 0 1,262 17,301
shared pool kghfnd: resv scan 0 189 0
shared pool kghfrunp: batch min scan 0 150 0
shared pool kghfnd: get first extent 0 70 0
sort extent pool ktstallocext: new extent i 0 160 0
undo global data ktubnd 0 870 15
undo global data ktudba: KSLBEGIN 0 50 901
undo global data ktudax: KSLBEGIN 0 1 1
Dictionary Cache Stats for DB: ORCL Instance: ORCL Snaps: 43 -44
->"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 Pct
Cache Requests Miss Requests Miss Req Usage SGA
dc_constraints 0 0 0 3 27
dc_database_links 804 1.2 0 0 100 99
dc_files 0 0 0 185 99
dc_free_extents 182,756 0.0 114 0.0 120 ###### 100
dc_global_oids 0 0 0 0 0
dc_histogram_data 0 0 0 0 0
dc_histogram_data_valu 0 0 0 0 0
dc_histogram_defs 538,895 0.0 0 0 5,123 100
dc_object_ids 1,935,111 0.0 0 2 1,128 100
dc_objects 1,982,244 0.2 0 12 ###### 100
dc_outlines 0 0 0 0 0
dc_profiles 4,230 0.0 0 0 14 93
dc_rollback_segments 5,152 0.0 0 0 162 98
dc_segments 1,994,946 0.0 0 112 1,429 100
dc_sequence_grants 0 0 0 1 1
dc_sequences 117 0.0 0 116 6 43
dc_synonyms 648,681 0.0 0 0 473 100
dc_tablespace_quotas 19 0.0 0 13 6 86
dc_tablespaces 4,863 0.0 0 0 16 89
dc_used_extents 109 97.2 0 109 4,741 100
dc_user_grants 13,472 0.6 0 0 1,306 100
dc_usernames 688,046 0.0 0 0 1,499 100
dc_users 32,608 0.3 0 5 1,339 100
ifs_acl_cache_entries 0 0 0 0 0
Library Cache Activity for DB: ORCL Instance: ORCL Snaps: 43 -44
->"Pct Misses" should be very low
Get Pct Pin Pct Invali-
Namespace Requests Miss Requests Miss Reloads dations
BODY 1,817 0.0 1,817 0.1 1 0
CLUSTER 16,689 0.0 1,221 1.3 0 0
INDEX 0 0 0 0
OBJECT 0 0 0 0
PIPE 0 0 0 0
SQL AREA 1,106,644 53.7 3,629,721 32.9 8,742 21
TABLE/PROCEDURE 2,597,499 0.7 4,690,082 0.6 9,593 0
TRIGGER 2,500 1.2 2,501 3.3 46 0
SGA Memory Summary for DB: ORCL Instance: ORCL Snaps: 43 -44
SGA regions Size in Bytes
Database Buffers 2,684,354,560
Fixed Size 102,076
Redo Buffers 3,162,112
Variable Size 1,199,579,136
sum 3,887,197,884
SGA breakdown difference for DB: ORCL Instance: ORCL Snaps: 43 -44
Pool Name Begin value End value Difference
java pool free memory 32,768 32,768 0
shared pool DML locks 2,442,720 2,442,720 0
shared pool KGFF heap 133,904 133,904 0
shared pool KGK heap 16,152 16,152 0
shared pool KQLS heap 3,098,752 3,029,464 -69,288
shared pool PL/SQL DIANA 1,718,704 1,724,272 5,568
shared pool PL/SQL MPCODE 1,928,336 1,281,584 -646,752
shared pool PLS non-lib hp 2,136 2,136 0
shared pool SEQ S.O. 475,920 475,920 0
shared pool State objects 6,030,880 6,030,880 0
shared pool branches 1,047,168 1,047,168 0
shared pool db_block_buffers 68,157,440 68,157,440 0
shared pool db_block_hash_buckets 11,239,632 11,239,632 0
shared pool db_handles 2,640,000 2,640,000 0
shared pool dictionary cache 48,837,016 50,747,192 1,910,176
shared pool enqueue_resources 1,535,040 1,535,040 0
shared pool event statistics per ses 11,474,960 11,474,960 0
shared pool fixed allocation callbac 10,248 10,248 0
shared pool free memory 123,549,128 338,913,744 ###########
shared pool ktlbk state objects 1,948,360 1,948,360 0
shared pool library cache 407,994,896 396,854,216 -11,140,680
shared pool messages 624,000 624,000 0
shared pool miscellaneous 16,352,776 16,906,952 554,176
shared pool processes 3,216,000 3,216,000 0
shared pool sessions 8,037,760 8,037,760 0
shared pool sql area 469,648,808 263,655,624 ###########
shared pool state objects 1,347,680 1,427,296 79,616
shared pool table columns 39,792 36,184 -3,608
shared pool table definiti 23,544 15,896 -7,648
shared pool transaction co 1,608 2,176 568
shared pool transaction_branches 307,200 307,200 0
shared pool transactions 5,525,200 5,525,200 0
shared pool trigger defini 43,656 36,024 -7,632
shared pool trigger inform 59,216 10,280 -48,936
db_block_buffers 2,684,354,560 2,684,354,560 0
fixed_sga 102,076 102,076 0
log_buffer 3,145,728 3,145,728 0
init.ora Parameters for DB: ORCL Instance: ORCL Snaps: 43 -44
End value
Parameter Name Begin value (if different)
background_dump_dest /oracle/ora817/admin/ORCL/bdump
compatible 8.1.0
control_files /tk3c2/ORCL/control01.ctl, /tk3c2
core_dump_dest /oracle/ora817/admin/ORCL/cdump
db_block_buffers 327680
db_block_size 8192
db_name ORCL
db_writer_processes 10
distributed_transactions 400
hash_multiblock_io_count 8
instance_name ORCL
java_pool_size 32768
job_queue_interval 10
job_queue_processes 10
large_pool_size 0
log_archive_dest_1 location=/tk3c2/ORCL/arch
log_archive_format arch_%t_%s.arc
log_archive_start TRUE
log_buffer 3145728
log_checkpoint_interval 120000
log_checkpoint_timeout 1800
max_enabled_roles 30
open_cursors 800
open_links 20
os_authent_prefix
processes 3000
remote_login_passwordfile EXCLUSIVE
resource_limit TRUE
service_names ORCL
shared_pool_reserved_size 52428800
shared_pool_size 1073741824
sort_area_retained_size 3206920
sort_area_size 3206920
timed_statistics TRUE
user_dump_dest /oracle/ora817/admin/ORCL/udump
utl_file_dir /oracle/schedule
End of Report -
Dear Gurus,
Sometimes users complain slow performance and today when I checked the AWR,
The first two lines of Top 5 events are:
Event Waits Time(s) Avg Time
latch: library cache 242110 51155 211 37.4 Concurrency
latch: shared pool 113896 19283 169 14.1 Concurrency
I got this URL http://www.ardentperf.com/2007/06/27/case-study-statspackawr-latch-waits-part-1 , which suggested tuning the AIX and also a note: 316533.1, which explains tuning minperm%, maxperm% and maxclient%, in the note it is suggested to take the output of svmon -G, using which we can calculate percentage of physical memory being used by AIX to buffer file I/O. In the note example, it shows 63% of physical ram is being used by AIX to buffer file I/O.
I have changed minperm% to 10, maxperm% to 20 and maxclient% to 20.
After this change the svmon -G output is:
# svmon -G
. size inuse free pin virtual
memory 2998272 2995389 2885 718202 3241361
pg space 6291456 923372
. work pers clnt
pin 718202 0 0
in use 2656658 56159 282572
If we use the formula mentioned in the note, the percentage of physical memory used by AIX to buffer file I/O comes to approx. 90%.
I am concerned with this value. Oracle suggests this value to be close to 30% in the same note. Based on the same note, the lru_file_repage parameter also has been modified to 0.
OS is AIX 5.3
DB is 10.2.0.4
Experts please advise.
Regards,
SASorry,
Looks like there is a mistake in my calculation, I am supposed to use *(in use - pers+ in user - clnt)/ memory size*
i.e.
(56159+282572)/2998272 comes to around 11%Thanks
SA -
Oracle 10gR2 LARGE PAGE SIZE on Windows 2008 x64 SP2
Hello Oracle Experts,
What are the advantages of Large Page Size and how would I know when my DB will benefit from Large Page Sizes?
My undeqrstanding is on Windows x64 – 8kb default page size – will now be 2 MB. Will this speed up accesses to buffer cache? If so is there a latch wait that I can monitor before vs. after to verify that large page size has improved performance?
My Database server has 256GB RAM and SGA is set to 180GB. I am quite sure the overhead involved in maintaining a large number of 8kb allocations (as opposed to 2MB) must be high - how can i monitor this?
I am planning to follow the procedure here:
http://download.oracle.com/docs/html/B13831_01/ap_64bit.htm#CHDGFJJD
The DB is for SAP on a 8CPU/48 core IBM x3950. For some reason SAP documentation does not mention anything about this registry setting or even if Large Page Size is supported in the SAP world.
Part 2 : I notice that more recent Oracle patch sets (example 25) turn NUMA OFF by default. Why is this and what is the impact of disabling NUMA on a system like x3950 (which is a NUMA based server)?
My understanding is Oracle would no longer know that some memory is Local (and therefore fast) and some memory is Remote (therefore slow). Overall I am guessing this could cause a real performance issue on this DB.
-points for detailed reply!
thanks a lot -Hello
Thanks for your reply. I am very interested to hear further about the limitations of Windows 2008 and the benefits of Oracle Linux.
Generally we find that Windows 2008 has been pretty good, a big improvement over Windows 2003 (bluescreens don't occur ever etc)
Can you advise further about Large Page Size for the buffer cache? I assume this applies on both Windows and Linux (I am guessing there is a similiar parameter for 10gR2 on Linux).
SAP have not yet fully supported Oracle 11g so this is why 11g has not made it into the SAP world yet.
Can you also please advise about NUMA? regardless of whether we run Linux or Windows this setting needs to be considered.
Thanks -
Output of Oracle8i "deployejb" tool
Hi,
To deploy the EJB successfully, Oracle recommends that we deploy their Sample EJB's, which ships with Oracle8i product,
before proceeding with our EJBs. This would help us verify the installation.
The sample EJB's are available at %ORACLE_HOME%\javavm\demo\demo.zip.When the demo.zip file is extracted, a
folder \examples\ejb\basic\helloworld, is created in the extracted path.The makeit.bat and runit.bat files in this folder
should run successfully to deploy the EJB in the DB.
When I attempt to execute, makeit.bat doesnot run properly.The output is pasted here for your reference.As you may notice,
ClassCastException occurs, when a call is given to deployejb, through the makeit.bat file.
C:\Oracle8i\javavm\demo\extract\examples\ejb\basic\helloworld>call deployejb -republish -temp temp -u scott -p tiger
-s sess_iiop://localhost:2481:oracle8i -descriptor hello.ejb
server.jar
Exception in thread "main" java.lang.ClassCastException: com.sun.corba.se.internal.iiop.ORB
at oracle.aurora.jndi.orb_dep.IRFinder.getObject(IRFinder.java:24)
at oracle.aurora.jndi.orb_dep.IRFinder.initialReferences(IRFinder.java:78)
at oracle.aurora.jndi.sess_iiop.SessionCtx.initialContext(SessionCtx.java:499)
at oracle.aurora.jndi.sess_iiop.SessionCtx.<init>(SessionCtx.java:35)
at oracle.aurora.jndi.sess_iiop.ServiceCtx.createSession(ServiceCtx.java:130)
at oracle.aurora.jndi.sess_iiop.ServiceCtx.login(ServiceCtx.java:295)
at oracle.aurora.server.tools.sess_iiop.ToolImpl.initializeSession(ToolImpl.java:101)
at oracle.aurora.server.tools.sess_iiop.ToolImpl.parseStdArgs(ToolImpl.java:213)
at oracle.aurora.server.tools.sess_iiop.ToolImpl.invoke(ToolImpl.java:121)
at oracle.aurora.ejb.deployment.GenerateEjb.main(GenerateEjb.java:445)
Any help/comments on this would be appreciated.
Thanks,
Sandeep"Memory" If you are trying to look at the memory usage of an OS process connected to Oracle you have an issue you need to be aware of, namely, most UNIX/Linux utilities cannot distinguish between private memory used by a process and shared memory. Since the SGA exists in shared memory the process memory statistics can show as using huge amounts of memory and the sum of all your Oracle connected processed can far exceed the available memory because of this double counting.
HTH -- Mark D Powell --
I missed that you had posted two separate questions. I will just answer in one. The questions I posted were about what it is you want the script to provide you and what value each column in the display has. I would point out that if you have issues looking at the OS level is unlikely to identify the problem in many cases. You may not see a process with extremely high cpu or memory at the OS level. The problem could be lock waiting or latch waiting. You will only be able to determine this by looking in the database. That is not to say that sometimes a problem session will not show up with high cpu only that in many cases the problem may be elsewhere. Eventually you are going to have to look in the database at the session so why not start there. After all top/topmonitor etc ... already exist at the OS level to find the high cpu, io, memory sessions. To find and fix database session issues you have to eventually connect to the database and high cpu, memory, and io sessions can all be found with queries.
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