Point noted. Excellent posts from both you and Walt. I guess that is what the forum is for. To present one's experience without trashing someone else's point of view.
Since you have first hand experience on the latest I guess John should listen to both of you first. Thanks
"Jesse, Rich" <[EMAIL PROTECTED]> wrote:
True, but using binds isn't always an option, like when running a 3rd party
product. I also could not justify weeks of recoding homegrown software for
the relatively minor gains we would have using binds. And scalability (or
lack thereof) didn't seem to be argument enough.
We're using CS=F on 8.1.7.4 on HP/UX 11.0. We haven't yet had a single
issue attributable to it in the 7 months we've been at the .4 release.
There were some nasty issues with 8.1.7.2 (ORA-600 and silently returning
WRONG data), but like I said, .4 seems to have cleaned that up. YMMV.
Remember that under 8i, you may see some performance DROP by using binds.
The case that comes to mind is if you're using histograms with ANALYZE or
DBMS_STATS. Under 8i, the optimizer can no longer "see" the values and
therefore can't use the histograms. Under 9i (R2 only?), you can tell the
optimizer to peek at the bind variables' values in order to make use of
histograms. We plan on doing this when we get to 9i in order to use a very
low cardinality index, where less than 0.0001% of the rows is what we need
to fetch, but 8i won't use the index because of the cardinality.
Your best bet, of course, is to test! HTH! GL! :)
Rich
Rich Jesse System/Database Administrator
[EMAIL PROTECTED] Quad/Tech Inc, Sussex, WI USA
-----Original Message-----
Sent: Tuesday, August 19, 2003 2:49 PM
To: Multiple recipients of list ORACLE-L
Hi,
No. I recommend that you do not change cursor_sharing if you are doing it
just to get rid of 4031. There could be serious problems. ora-600 etc. Maybe
Oracle has fixed everything in latest 817 but I suggest not to take that
chance.
For 4031 you can do the following : pin pl/sql sql preferably at startup,
use bind variables and periodically check fo! r sql not using bind variables.
Goodluck.
"Fedock, John (KAM.RHQ)" <[EMAIL PROTECTED]>wrote:
Does anyone have any experience using cursor_sharing in 8.1.7.4? I feel I
need to use it due to literal SQL statements being used. We have had misc
4031 errors off and on and I feel this is my last hope. I have a very busy
OPFS server (HP-UX).
I did try using cursor_sharing in 8.1.7.2, and I remember incorrect sorting
and other unexpected results happening.
Thanks for any input.
John
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Author: Jesse, Rich
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