Re: query slow in 9i, but not slow in 8i

From: Wolfgang Breitling <breitliw_at_centrexcc.com>
Date: Mon, 01 Mar 2004 22:12:17 -0700
Message-Id: <6.0.3.0.2.20040301220821.02b997b0@pop.centrexcc.com>

At 09:44 PM 3/1/2004, you wrote:

[...]

>It did not seem to help.

What did not seem to help? I am questioning if not having workarea_size_policy=auto is overriding the setting of sort_area_size and hash_area_size. If that is so, then your exercise didn't prove or disprove anything.

>On Mon, 1 Mar 2004, Wolfgang Breitling wrote:
>
> > >NAME
> > >----------------------------------------------------------------
> > >VALUE
> > >-----------------------------------------------------------------------
> ---------
> > >workarea_size_policy
> > >AUTO
> > >
> > >Would this value have some effect on my query?
> >
> > It could. What is the pga_aggregate_target? I couldn't quickly find what
> > overrides what:
> > Does setting sort_area_size or hash_area_size override
> > workare_size_policy=auto or vice versa?
> > Does anyone know? (Rhetorical question - someone'll know). I lean towards
> > the former.
> >
> > Run a 10053 event trace when explaining the sql - both in 8i and in 9i. It
> > may be too big to post. You can e-mail it to me.
> >

Wolfgang Breitling
Oracle7, 8, 8i, 9i OCP DBA
Centrex Consulting Corporation
http://www.centrexcc.com

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Received on Mon Mar 01 2004 - 23:09:14 CST