Return-Path: Received: from newsfeed.cts.com (newsfeed.cts.com [209.68.248.164]) by naude.co.za (8.11.2/8.11.2) with SMTP id g76I2xk25009 for ; Tue, 6 Aug 2002 14:02:59 -0400 Received: from fatcity.UUCP (uucp@localhost) by newsfeed.cts.com (8.9.3/8.9.3) with UUCP id LAA91759; Tue, 6 Aug 2002 11:02:40 -0700 (PDT) Received: by fatcity.com (26-Feb-2001/v1.0g-b71/bab) via UUCP id 004AC6D6; Tue, 06 Aug 2002 10:38:22 -0800 Message-ID: Date: Tue, 06 Aug 2002 10:38:22 -0800 To: Multiple recipients of list ORACLE-L X-Comment: Oracle RDBMS Community Forum X-Sender: "Post, Ethan" Sender: root@fatcity.com Reply-To: ORACLE-L@fatcity.com Errors-To: ML-ERRORS@fatcity.com From: "Post, Ethan" Subject: RE: Checking the rebuildability of an index Organization: Fat City Network Services, San Diego, California X-ListServer: v1.0g, build 71; ListGuru (c) 1996-2001 Bruce A. Bergman Precedence: bulk Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit If memory serves correct (and it might not) both Tom Kyte and Jonathan Lewis have stated that in most circumstances rebuilding indexes is useless. I think Tom may have said he could count the # of times he had to rebuild an index on one hand (something like that). Thus, I have stopped worrying about this one so much and will only entertain rebuilds if I start to see performance issues. Of course if you have the time and need to look busy keep rebuilding those indexes :) By the way the reason it is useless is not that there is never a performance gain but that most indexes that need to be rebuild quickly degrade again and the period that one experiences a performance gain is minimal. Operating off a poor memory here so hopefully I have not misrepresented anyone. Ethan Post perotdba (AIM), epost1 (Yahoo) -------------------------------------------------------------------- -----Original Message----- Sent: Tuesday, August 06, 2002 1:05 PM To: Multiple recipients of list ORACLE-L Actually, I do the 'validate structure' as well, and neglected to include it in my previous post. Jared > also send the HELP command for other information (like subscribing). > -- __________________________________________________________ Sign-up for your own FREE Personalized E-mail at Mail.com http://www.mail.com/?sr=signup Get 4 DVDs for $.49 cents! plus shipping & processing. Click to join. http://adfarm.mediaplex.com/ad/ck/990-1736-3566-59 -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Rajesh Dayal INET: rdayal73@techie.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Post, Ethan INET: Ethan.Post@ps.net Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru@fatcity.com (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).