I'll amend The True Way (TM) based on your suggestions.
--
Mladen Gogala
Oracle DBA
> -----Original Message-----
> From: ml-errors_at_fatcity.com [mailto:ml-errors_at_fatcity.com] On
> Behalf Of Tanel Poder
> Sent: Friday, September 19, 2003 1:10 PM
> To: Multiple recipients of list ORACLE-L
> Subject: Re: sizing sort_area_size
>
>
> > That gives you only the current use of sort segments. The
> same applies
> > to reasoning based on v$sort_usage and V$TEMP_SPACE_HEADER.
> The only
> > True Way(TM) of tuning sorts is by using v$sysstat and v$sesstat
> > values,
>
> I think tuning sorts based on "in-memory sort" vs "not-in
> memory sort" calculations might be ok in simple OLTP
> envivronments, but in modern DW and OLAP world they give too
> simplistic overiew of what's happening in database. I'd
> definitely add events 10032 and 10033 trace for tuning big
> sorts (v$tempstat and even 10046 trace with waits can be
> somewhat useful as well).
>
> Tanel.
>
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Tanel Poder
> INET: tanel.poder.003_at_mail.ee
>
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--
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--
Author: Mladen Gogala
INET: mladen_at_wangtrading.com
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Received on Fri Sep 19 2003 - 12:29:44 CDT
