RE: CBO question ?
- From: "Andem, Venu" <Venu.Andem@xxxxxxxxxxxxxxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 2 Mar 2006 16:37:25 -0000
You will have to look into DBA_TABLES (LAST_ANALYZED column), i would want to
point you to the exact location where you can read some info inside
http://tahiti.oracle.com but somehow strangely the site is down.
If the site comes up, make sure you check the performance tuning guide, a
chapter on CBO, can't remember the exact name (might be just CBO).
-Venu
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]On
Behalf Of Savio Pinto (s)
Sent: 02 March 2006 16:32
To: paul.baumgartel@xxxxxxxxxxxxxxxxx; oracle-l@xxxxxxxxxxxxx
Subject: RE: CBO question ?
Thanks, but how can i check/verify that the statistics are stored for a
particular table in the data dictionary ?
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]On
Behalf Of Baumgartel, Paul
Sent: Thursday, March 02, 2006 9:31 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: RE: CBO question ?
If any table mentioned in the query has statistics stored in the data
dictionary, Oracle will use the CBO.
Paul Baumgartel
paul.baumgartel@xxxxxxxxxxxxxxxxx
212.538.1143
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx]On
Behalf Of Savio Pinto (s)
Sent: Thursday, March 02, 2006 10:28 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: CBO question ?
Hi,
The execution plan for a query in oracle 9i shows "Optimizer= CHOOSE", how can
i force the DB engine to use the COST based optimization for a query ?
Oracle version is 9.2.0.4.0
Thanks
Savio Pinto
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