Return-path: Envelope-to: oracle-l@orafaq.net Delivery-date: Mon, 23 Sep 2002 23:25:11 +0800 Received: from newsfeed.cts.com ([209.68.248.164]) by jean.onefuse.com with esmtp (Exim 3.36 #1) id 17tV56-0005g0-00 for oracle-l@orafaq.net; Mon, 23 Sep 2002 23:25:04 +0800 Received: from fatcity.UUCP (uucp@localhost) by newsfeed.cts.com (8.9.3/8.9.3) with UUCP id IAA59132; Mon, 23 Sep 2002 08:24:55 -0700 (PDT) Received: by fatcity.com (26-Feb-2001/v1.0g-b72/bab) via UUCP id 004D696D; Mon, 23 Sep 2002 08:08:24 -0800 Message-ID: Date: Mon, 23 Sep 2002 08:08:24 -0800 To: Multiple recipients of list ORACLE-L X-Comment: Oracle RDBMS Community Forum X-Sender: DENNIS WILLIAMS Sender: root@fatcity.com Reply-To: ORACLE-L@fatcity.com Errors-To: ML-ERRORS@fatcity.com From: DENNIS WILLIAMS Subject: RE: quckways to find block corruption Organization: Fat City Network Services, San Diego, California X-ListServer: v1.0g, build 72; ListGuru (c) 1996-2001 Bruce A. Bergman Precedence: bulk Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Srinivas I think that as a minimum, to detect corruption you must read all = data blocks. There are several methods, most involve an Oracle process that = will error if a corrupt block is encountered. Export to /dev/null was = mentioned already. I have used ANALYZE TABLE VALIDATE STRUCTURE CASCADE, which = will also check out the indexes and verify they point to good blocks, but is quite resource intensive. If you use RMAN to back up your database, = then as a bonus it always verifies your data blocks and will error out when it encounters a bad block. I haven't used dbv personally, but assume that dbv was one of the = most efficient methods of checking your datafiles since it runs outside = Oracle and therefore doesn't tie up your Oracle resources. Perhaps you can = spell out the problems you are encountering with dbv and what you are trying = to accomplish in more detail. =A0 Dennis Williams DBA Lifetouch, Inc. dwilliams@lifetouch.com =20 -----Original Message----- Sent: Monday, September 23, 2002 5:03 AM To: Multiple recipients of list ORACLE-L Hello all, DB: 8i OS: solaris 2.7 can somebody post me reply for this. is there any quick way to find which datablocks are corrupted in my oracle database . ( other than dbverify and rman backup. ) b'coz we have BCV backup already implemented and we cannot do a dbv every week for 500 gig production database . thanks in advance, srinivas __________________________________________________ Do you Yahoo!? New DSL Internet Access from SBC & Yahoo! http://sbc.yahoo.com --=20 Please see the official ORACLE-L FAQ: http://www.orafaq.com --=20 Author: kommareddy sreenivasa INET: kommacnu@yahoo.com 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: 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). -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: DENNIS WILLIAMS INET: DWILLIAMS@LIFETOUCH.COM 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: 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).