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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Oracle's use of Indexes
Craig - Compare the init.ora file for these instances.
Dennis Williams
DBA, 80%OCP, 100% DBA
Lifetouch, Inc.
dwilliams_at_lifetouch.com
-----Original Message-----
Sent: Monday, June 02, 2003 8:45 AM
To: Multiple recipients of list ORACLE-L
OK, I'm confused. Maybe it's Monday morning and my brain's not working.
We have a production schema and a test schema on the same Oracle 8.1.7
instance, running on Windows. They both have a customer table, with 3
million and 2 million records respectively. They both have the same
indexes, and both have been analyzed today. Production used an index and
took 40ms. Test didn't and took 20s. I played around, analyzing,
dropping and creating indexes etc. Now neither of them use the index,
both taking around 20s.
I can add a hint, which works, but I want to know what changed.
TIA Craig Healey
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Author: Craig Healey
INET: c.healey_at_hhsuk.com
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