Re: Query works fine in 8i and not in 9i
- From: "Daniel W. Fink" <Daniel.Fink@xxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Wed, 11 Aug 2004 13:22:43 -0600
Abraham,
I would recommend reading Wolfgang's paper "What's New in the 9i CBO" at
www.centrexcc.com. I would also not say this is a problem with the
optimizer. Without seeing the stats and/or a 10053 trace...oops, I mean
a Wolfgang, it is hard to say the optimizer is having a problem. For the
most part, I find that it makes good decisions in 9i. Of course, from
what I hear, when you add in Peoplesoft, the universe spins, up becomes
down, right becomes left and good sql goes bad.
Daniel
Guerra, Abraham J wrote:
>Hello all,
>
>Thanks to all that replied. I'm in the process of moving our PeopleSoft
>Financials from SUN (8i) to HP-UX (9i). The optimizer seems to have a
>mind of its own in 9i. By PeopleSoft suggestion, I have added the
>following init.ora parameters that seem to have done the trick:
>
>_complex_view_merging=3DFALSE
>_unnest_subquery=3DFALSE
>
>Thanks.
>
>Abraham Guerra
>Oracle DBA
>American Family Insurance
>
>
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