Re: latch free - library cache

>From the init.ora found out that CURSOR_SHARING=FORCE was done by oracle people who had visited site for performance problems in Sep 2002.

Now I have to catch them (if that is possible !!!) and ask the reason behind keeping it FORCE.

~Dilip  

ORACLE-L_at_fatcity.com wrote:

WHOA!!! Why do you have CURSOR_SHARING set to FORCE (default = EXACT)? You ain't supposed to do that with Oracle 11.5.x! Certainly not with 817x. Check out MetaLink doc #216205.1...

Better yet, search MetaLink on the keyword CURSOR_SHARING and be sure to click on "Advanced" and "Bug Database"; good way to lose any enthusiasm for that particular parameter...

on 5/14/03 3:36 AM, Dilip at dilip7772002_at_indiatimes.com wrote:

> 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
>
>
>
>
>
>
>
> Get Your Private, Free E-mail from Indiatimes at http://email.indiatimes.com
>
> Buy The Best In BOOKS at http://www.bestsellers.indiatimes.com
>
> Bid for for Air Tickets @ Re.1 on Air Sahara Flights. Just log on to
> http://airsahara.indiatimes.com and Bid Now !

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Tim Gorman
INET: tim_at_sagelogix.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).




Get Your Private, Free E-mail from Indiatimes at http://email.indiatimes.com

 Buy The Best In BOOKS at http://www.bestsellers.indiatimes.com

Bid for for Air Tickets @ Re.1 on Air Sahara Flights. Just log on to http://airsahara.indiatimes.com and Bid Now !

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Dilip
  INET: dilip7772002_at_indiatimes.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).