Do you mean that in the databases you work with OPTIMIZER_INDEX_COST_ADJ is usually set to the default of 100?
> -----Original Message-----
> Wolfgang Breitling
>
> I have to admit that I am not a fan of changing them from
> their default
> values. In the databases I am, or have been, working with
> (Peoplesoft),
> changing them usually induces too many NL joins with
> disastrous consequences.
>
> In Oracle 9i I would investigate the use of
> dbms_stats.gather_system_stats
> prior to attempting to tweak the O_I_C.. parameters. Joze Senegacnik
> reports good success with it. I myself do not have experience
> with 9i in a
> large enough production setting to say.
Please see the official ORACLE-L FAQ:
http://www.orafaq.com
To unsubscribe send email to: oracle-l-request_at_freelists.org
put 'unsubscribe' in the subject line.
--
Archives are at http://www.freelists.org/archives/oracle-l/
FAQ is at http://www.freelists.org/help/fom-serve/cache/1.html
-----------------------------------------------------------------
Received on Thu Mar 04 2004 - 16:04:21 CST
