Anand - This was the common wisdom several years ago. I used to rebuild tables based on rules of thumb like this. Recently, several leading experts have challenged this assumption, and now it is generally accepted that trying to keep the number of extents below 5 wastes a lot of work for nothing. Here are links to papers by Tim Gorman and Cary Millsap that discuss this in more detail. http://www.evdbt.com/MythsExtPerf.doc <http://www.evdbt.com/MythsExtPerf.doc> http://www.dbatoolbox.com/WP2001/spacemgmt/Myths%20About%20Extents.pdf <http://www.dbatoolbox.com/WP2001/spacemgmt/Myths%20About%20Extents.pdf>
Dennis Williams DBA, 40%OCP Lifetouch, Inc. [EMAIL PROTECTED] -----Original Message----- Sent: Saturday, November 30, 2002 11:39 AM To: Multiple recipients of list ORACLE-L Is there any restriction that the segments shouldn't cross more than 5 extents in oracle 7.3. Pl. help me, as I heard from somebody that the segments shouldn't cross more than 5 extents and my indexes are in more than 20 extents. Thanks in advance Anand Kumar DBA ITW Signode India Ltd -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: DENNIS WILLIAMS 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).
