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RE: Explain Plan not the same through ODBC

From: Mark W. Farnham <mwf_at_rsiz.com>
Date: Tue, 20 Feb 2007 17:06:47 -0500
Message-Id: <200702202207.l1KM75Ul027831@troll.tpk.net>


All good possibilities. Adding one more - does your query have a hint and does the other front end tool strip off non-ANSI comments?  

mwf  


From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Allen, Brandon
Sent: Tuesday, February 20, 2007 4:01 PM To: lucdemanche_at_gmail.com; oracle-l
Cc: cdelisle_at_msds.com
Subject: RE: Explain Plan not the same through ODBC  

Here are some possible causes to look at off the top of my head: different users with different environment settings (e.g. one has a trigger to change optimizer_mode or any number of other parameters, or such changes are made by the application or user), different bind variable values, different schemas, different system stats, different object stats, different methods of retrieving the plan (e.g. autotrace, explain plan for, 10046 trace, v$sql_plan).  

Regards,

Brandon  


From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Luc Demanche  

Why do we have 2 different explain plan for the same SQL ?    

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Received on Tue Feb 20 2007 - 16:06:47 CST

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