How much have you played with Oracle Hints???
-Joe
- "Magaliff, Bill" <Bill.Magaliff_at_lendware.com> wrote:
> I work in a dev shop - most of the sql is canned and pretty basic.
> We've
> been running CBO in all of our dev environments, but we have a few
> long txns
> that just take forever. At the request of some savvy developers, I
> turned
> on RBO, and it brought down execution times dramatically.
>
> I've been analyzing affected tables often (we do a lot of bulk
> load/unload
> for testing), and have played with partitioning and clustering,
> particularly
> on one table that's just a dog. CBO will always do a FTS where RBO
> uses the
> PK to retrieve data.
>
> Where to go next? I've been unable to alter the costs dramatically
> enough
> to make any real difference in execution time.
>
> thx
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Magaliff, Bill
> INET: Bill.Magaliff_at_lendware.com
>
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--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Joe Raube
INET: jraube_at_yahoo.com
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
San Diego, California -- Public Internet access / Mailing Lists
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Received on Thu Mar 07 2002 - 13:43:39 CST
