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Home -> Community -> Mailing Lists -> Oracle-L -> RE: latch free - library cache
Since you know the session that is delaying the train, why
not set a 10046 trace level 9 on that session and then look
in there for your waits. Probably some some SQL competing
for an Oracle block.
fwiw, mike
-----Original Message-----
Sent: Wednesday, May 14, 2003 9:32 AM
To: Multiple recipients of list ORACLE-L
What is the cpu utilization of the server?
Waleed
-----Original Message-----
Sent: Wednesday, May 14, 2003 6:37 AM
To: Multiple recipients of list ORACLE-L
Hi List,
DB 8.1.7.4.0 on Sun sparc solaris 2.6
This is oracle applications 11.5.4
One of the program was running for very long time. So checked out
v$session_wait for that perticular session. It was waiting on 'latch free'
and from P2 column and v$latch, found out that it is waiting for library
cache latch.
Now docs says this is related to shared pool fragmentation. So checked
v$sgastat where it showed 38M space free in the shared pool (Total shared
pool is 800 MB). But it didnt throw ORA-4031 and the process was running for
last 17 hours. I looked at v$librarycache and v$latchholder but didn't get
any clue.
At last, I flushed the shared pool but still that session was waiting on
same wait event. Finally I had to kill the session. I am facing this
situation once or twice in production and everytime I can't kill the
session.
Can somebody tell me how should I debug furthur and go to the root cause of the problem. Does this mean I need to increse the shared pool ? CURSOR_SHARING is kept to FORCE.
Thanks,
~Dilip
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Author: Dilip
INET: dilip7772002_at_indiatimes.com
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Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services ---------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Wed May 14 2003 - 17:21:45 CDT
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