SIEBEL PERFORMANCE RBO to CBO

We have made a number of changes to optimizer parameters and generated 
statistics in our Siebel database migrated to 10g from 8i (i.e. rule-based to 
cost-based optimizer).  However, we still see significant response time 
differences between the two versions.  I am thinking of using outlines to make 
Siebel on 10g behave and have the same execution plans as Siebel on 8i.  
   
  Has anyone else had experience in doing this?
   
  Thanks in advance,
  Paula

 
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