Re: A STRANGE QUERY

Dear "system mamager",

You have given very little to work from. Is the query a SELECT, UPDATE, INSERT or DELETE? Can you produce explain plans for the query on both systems? What made you consider disabling the primary key on production (this sounds like a bold / crazy move, but I wonder why you considered it)?

Are data volumes anywhere near the same on production and test? Is the query something that is impacted heavily by data volume? Are both databases analyzed / have stats for all relevant objects?

Regards,

      Mark.

                                                                                                                                      
                      "system manager"                                                                                                
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                      Sent by:                 Subject:  A STRANGE QUERY                                                              
                      ml-errors_at_fatcity                                                                                               
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                      13/01/2004 07:54                                                                                                
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                      ORACLE-L                                                                                                        
                                                                                                                                      
                                                                                                                                      

Dear List,

I have a very strange query:

The table, data, indexes, constraints are set up exactly same The query was running ok in the test database but paused the production system.
It is also running ok in production if the primary key disabled. Any ideas? Any input will be greatly appreciated.

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Author: Mark Richard
  INET: mrichard_at_transurban.com.au

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