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Home -> Community -> Usenet -> c.d.o.server -> Performance decrease dramaticcaly by using statistics
We have a Oracle Cliënt-application fully generated by Designer 2.1.2
and a Databaseserver 8.1.7.2 on a IBM RS6000/AIX. The cliënt-application
call a user-exit on the RS6000 AIX-machine and written on c (.csql).
The embedded sqls in the user-exit use a lot of table joins. A view is
not use because the sql-statement will be build dynamically depends on
the transactions job and a various parameter variables.
OPTIMIZER_MODE = CHOOSE
Without statistics is the elapsed time of a jobs/transactions
approximately 1 minute.
With statistics increase the elapsed-time to min. 25 minutes.
I don't understand why this happened.
Could someone help me with hints where i have to looking for to analyze
this problem.
Thanks,
Ruud Gijanto
rgijanto_at_ctgzorg.nl
Received on Fri Feb 22 2002 - 01:24:00 CST
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