Seema:
I faced this problem a couple of months back. The combination of increasing
the SGA and reducing the hash_area_size from 20 megs to 4 megs helped me
out. Also, I am running MTS and I had not configured the large pool.
Configuring large pool made a huge difference.
I'm appending clips from Raj and Tim. There's some explanation of why
reducing hash_area_size might help.
Do you have the full text from the error message? This might help us also.
Good luck!
>From Raj - - - - -
> I don't know if it matters, but we faced the same error in 9x, and when we
> set the hash_area_size to 1M, it went away. The exact error message for us
> was
>
> ORA-04031: unable to allocate 1126656 bytes of shared memory ("shared
> pool","unknown object","hash-join subh","kllcqc:kllcqslt")
>
> The 3rd parameter is "hash-join subh", so I think it pertains to hash
joins.
> For Barb, the third parameter is "cursor work he(ap)" so I wonder would it
> pertain to hash_area_size at all?
>
> Raj
>From Tim - - - - -
> I did an "advanced search" on MetaLink for "kllcqc", making sure to check
> the checkbox for "Bug Database" -- quite a few bugs appeared (for what
> they
> are worth). One of them (#2324210) is against 9.0.1.3 on Solaris, but the
> error message looks remarkably like yours even so. Like you, they are
> using
> MTS. They indicate that the settings for SORT_AREA_SIZE and
> HASH_AREA_SIZE
> are too large for the Shared Pool, hence the ORA-04031. The solution is
> to
> reduce SORT_AREA_SIZE and HASH_AREA_SIZE...
>
> What are the settings for SORT_AREA_SIZE and HASH_AREA_SIZE here? Is it
> possible that the users may be using ALTER SESSION SET to set their own
> "custom" values for these parameters? I think this statement should
> appear
> in the V$SQL or V$SQLAREA if they are using it. This would possibly
> explain
> the sudden (and violent) onset of these symptoms...
>
>
>
> ----------
> From: Seema Singh[SMTP:[EMAIL PROTECTED]]
> Reply To: [EMAIL PROTECTED]
> Sent: Wednesday, September 11, 2002 4:14 PM
> To: Multiple recipients of list ORACLE-L
> Subject: ORA-04031
>
> Hi
> One of instance are showing ORA-04031 error more frequntly(2 times in a
> week).I increased SGA ,pinned some of DBMS packages,flush SGA etc but all
> these are not helping at all.Let me know what could be look next.
> Thx
> -Seema
>
>
>
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> Author: Seema Singh
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