We got Some Error ( Forget the Exact Error Number NOW ) on Oracle
8.1.7.1 with CURSOR_SHARING=FORCE
We Applied the Patch 8.1.7.2 & the Error was Resolved
> -----Original Message-----
> From: Rachel Carmichael [SMTP:[EMAIL PROTECTED]]
> Sent: Monday, August 20, 2001 10:58 PM
> To: Multiple recipients of list ORACLE-L
> Subject: Re: WARNING: CURSOR_SHARING=FORCE on 8.1.7
>
> I think I need to have a chat with Kevin when I see him at the NYOUG
> meeting...
>
> I'm on 8.1.6 and have been using CURSOR_SHARING=FORCE for about a
> year. No
> problems. Admittedly, we don't do too many complicated queries and we
> analyze all tables and don't use hints...
>
>
> >From: "Jesse, Rich" <[EMAIL PROTECTED]>
> >Reply-To: [EMAIL PROTECTED]
> >To: Multiple recipients of list ORACLE-L <[EMAIL PROTECTED]>
> >Subject: WARNING: CURSOR_SHARING=FORCE on 8.1.7
> >Date: Mon, 20 Aug 2001 07:05:29 -0800
> >
> >Hi all,
> >
> >Just thought I'd share an "experience" (ON-TOPIC!) with everyone.
> After
> >upgrading from 8.0.6 to 8.1.7 on HP/UX 11.0, we've had a few problems
> with
> >CURSOR_SHARING=FORCE. The reason I decided to use it is because our
> apps
> >don't use bind variables and I wanted to decrease the size of our
> shared
> >pool to help reduce latch contention. I figured this was the *easy*
> >solution!
> >
> >Well, after almost three weeks, we're OK, but there is one lingering
> >occasional problem. Under certain circumstances (I can't seem to get
> what
> >exactly those are), specific DML will always generate an "ORA-12704
> >character set mismatch" error when using CURSOR_SHARING=FORCE and
> CBO.
> >Oracle knows about this and say it's fixed in 9i. However, they also
> say
> >that a backport of the fix to 8.1.7 is "not feasible". <sigh>
> >
> >One common theme in the offending DML seems to be the use of
> functions in a
> >GROUP BY or ORDER BY clause, but it's not consistent. However,
> Oracle
> >Support was able to consistently reproduce the error. I've attached
> the
> >output from the script (set echo on) in case anyone is interested in
> >testing. Note however that not all SQL I've had blow up with this
> uses the
> >ORDERED hint or deals with unanalyzed tables. Also note that Oracle
> >Support
> >says the workaround is to ALTER SESSION SET CURSOR_SHARING=EXACT for
> each
> >problem statement.
> >
> >And last week I went to a quickie seminar with Kevin
> Loney/TUSC/Veritas,
> >where Kevin recommended waiting for 9i before using
> CURSOR_SHARING=FORCE.
> ><sigh> Now I think I'll need to plan how I'm going to turn it off:
> How
> >big
> >to make the shared pool? Do I now use histograms? etc. Like I
> didn't
> >have
> >enough to do...
> >
> >Hope this helps someone else planning an upgrade to 8i! :)
> >
> >Rich Jesse System/Database Administrator
> >[EMAIL PROTECTED] Quad/Tech International, Sussex,
> WI USA
> >
> >
> >
> ><< CS_FORCE.txt >>
>
>
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> Author: Rachel Carmichael
> INET: [EMAIL PROTECTED]
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