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Re: QRE: Query tuning help needed

From: Stephane Faroult <sfaroult_at_oriole.com>
Date: Tue, 29 Apr 2003 14:56:39 -0800
Message-ID: <F001.0058C4BA.20030429145639@fatcity.com>


"Johnson, Michael" wrote:
>
> Since you have the query, why dont you check and see what
> the system is waiting on while it is executing ? Set
> a 10046 trace on it and see what kind of hints that gives
> you as to why that session is waiting. Probably some SQL
> competing for a Oracle Block in memory. Also, execute
> a statspack snapshot before, during and after execution.
> >From there you can determine how to speed this up.
>
> Oracle Performance Tuning 101 is a source you may be
> interested in reading. Also, www.hotsos.com should certainly
> be of interest to all DBAs regarding the 10046 data.
>
> Good Luck!
>
> Mike
>

Mike,

 When you see that umpteen SELECTs are executed for each row returned, traces are a bit of an overkill IMHO.

-- 
Regards,

Stephane Faroult
Oriole Software
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Stephane Faroult
  INET: sfaroult_at_oriole.com

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Received on Tue Apr 29 2003 - 17:56:39 CDT

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