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Home -> Community -> Mailing Lists -> Oracle-L -> RE: latch free - library cache
Dilip,
Can you check terminated jon in through your concurrent manager and match the timing of your job running in oracle...You may use following query to match the timings..It looks like some zombi job which was terminated at application level but keep running on database side
select
SADDR,
SID,
SERIAL#,
substr(USERNAME,1,8) "USER",
STATUS ,
SCHEMA#,
OSUSER,
PROCESS,
to_char(logon_time, 'DD-MON-YY HH24:MI:SS') LOGON_TIME,
-- substr(action,1,5) action,
--to_char(LOGON_TIME,'MONDD HH24:MI') "LOGON_TIME",
last_call_et
from v$session
where status = 'ACTIVE' and username not like 'SYS'
/
Regards
Rafiq
Reply-To: ORACLE-L_at_fatcity.com
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
Date: Thu, 15 May 2003 06:31:51 -0800
There is a x$table called X$kgllk in this table you can see who is running that particular sql link this along with the v$session to get the logon time then u can catch the guy who is running that sql
select a.sid,to_char(a.logon_time,'dd-mm-yyyy hh24:mi:ss'),
b.KGLNAOBJ from v$session a,x$kgllk b
where b.kgllksnm=a.sid
and b.KGLNAOBJ like '%ATS_SYS_PARAMETERS_at_IOTTOSM%'
order by a.logon_time
-----Original Message-----
Sent: Thursday, May 15, 2003 7:22 AM
To: Multiple recipients of list ORACLE-L
CPU utilization was 100 % on the server. In fact we were looking at the top command. From that came to know about one very long running oracle process. Then traced that process to this perticular problem.
~Dilip
ORACLE-L_at_fatcity.com wrote:
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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Author: M Rafiq
INET: rafiq9857_at_hotmail.com
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