>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 >
Craig, Does 'etc' include doing something to tables as well? I would, from your posting, being tempted to say 'no'. Could it have anything to do with histograms ? The only thing I can currently think of is differences in the way statistics were gathered. Regards, Stephane Faroult Oriole -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Stephane Faroult INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
