RE: CBO question ?

From: "Igor Neyman" <ineyman@xxxxxxxxxxxxxx>
To: <Venu.Andem@xxxxxxxxxxxxxxxxxxxxxxx>, <oracle-l@xxxxxxxxxxxxx>
Date: Thu, 2 Mar 2006 11:47:25 -0500
You are wrong.
 
Igor

________________________________

From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Andem, Venu
Sent: Thursday, March 02, 2006 11:41 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: RE: CBO question ?


Paul,
 
I think its the other way round, if one of the tables in the query does
not contain statistics then Oracle uses RBO. pls correct me if i am
wrong.
 
Venu

        -----Original Message-----
        From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of Baumgartel, Paul
        Sent: 02 March 2006 15:31
        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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RE: CBO question ?

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