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Query takes much longer in 10g

I have a performance problem on 10g -- this query takes 10 minutes on 9i but on 10g it is taking 1 hour and 20 minutes. (Long query removed.)

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Compare your database initialization parameters, and research default behavior that differs between the two versions. Also, trace the execution on each database, using dbms_support on 9i and dbms_monitor on 10g, and compare the statistics on elapsed time (including CPU time and wait time).

This was first published in June 2006

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