Optimizer issue
- From: "Manjula Krishnan" <oradba.la@xxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Fri, 19 May 2006 10:05:05 -0500
I have an application on Oracle 9i. The database (designed by the vendor)
was set with optimizer_mode=CHOOSE. A week after we went live with the
application, performance started degrading. I discovered that statistics
were missing and built them. Immediately the application problems were
resolved.
The vendor claims that with the statistics, it would not use the right
indexes and some data would not be pulled up in the application. Is that
possible?
Thanks,
Manjula
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