If it says that, someone should file a documentation bug to get it fixed. -Mark -- Mark J. Bobak Senior Database Administrator, System & Product Technologies ProQuest 789 E. Eisenhower, Parkway, P.O. Box 1346 Ann Arbor MI 48106-1346 +1.734.997.4059 or +1.800.521.0600 x 4059 mark.bobak@xxxxxxxxxxxx<mailto:mark.bobak@xxxxxxxxxxxxxxx> www.proquest.com<http://www.proquest.com> www.csa.com<http://www.csa.com> ProQuest...Start here. From: oracle-l-bounce@xxxxxxxxxxxxx [mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Rick Ricky Sent: Thursday, May 15, 2008 2:17 PM To: oracle-l@xxxxxxxxxxxxx Subject: concepts document part about separating indexes and tablspaces i was talking to someone about this today. I cannot remember where in the Concepts document that it says that separating data from indexes improves performances?