RE: query slow in 9i, but not slow in 8i

  • From: "Duret, Kathy" <kduret@xxxxxxxxxxxxxxxxxxxx>
  • To: "'oracle-l@xxxxxxxxxxxxx'" <oracle-l@xxxxxxxxxxxxx>
  • Date: Mon, 1 Mar 2004 11:24:38 -0600 

I don't know your whole issue, but I opened up a tar with oracle as 80% as
our sql when waaaaay slower when we switched one of our production systems
over to 9i.
:
They told us to use:_complex_view_merging=false and this solved our problem
(your mileage may vary)

However, we have optimizer_max_permutations=80000 like oracle 8i (the old
dba must have been a carry over from 8i).

Haven't had time to see if setting the max permutations to 2000 solved our
problems or not.  


Kathy





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