RE: latch free - library cache

Dilip,

  I would have a look at V$DB_OBJECT_CACHE to check what are the most requested - and reloaded - objects. It could give a clue about what it is trying to get.

HTH SF

>----- ------- Original Message ------- -----
>From: "Dilip" <dilip7772002_at_indiatimes.com>
>To: Multiple recipients of list ORACLE-L
><ORACLE-L_at_fatcity.com>
>Sent: Wed, 14 May 2003 02:36:44
>
>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
>

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Stephane Faroult
  INET: sfaroult_at_oriolecorp.com

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).