Re: Query works fine in 8i and not in 9i

From: Daniel W. Fink <Daniel.Fink_at_Sun.COM>
Date: Wed, 11 Aug 2004 13:22:43 -0600
Message-id: <411A7203.5080606@sun.com>

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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Received on Wed Aug 11 2004 - 14:19:10 CDT