Return-Path: Received: from ensim.rackshack.net (root@localhost) by orafaq.net (8.11.6/8.11.6) with ESMTP id h45D8r326456 for ; Mon, 5 May 2003 08:08:53 -0500 X-ClientAddr: 209.68.248.164 Received: from newsfeed.cts.com (newsfeed.cts.com [209.68.248.164]) by ensim.rackshack.net (8.11.6/8.11.6) with ESMTP id h45D8rA26451 for ; Mon, 5 May 2003 08:08:53 -0500 Received: from fatcity.com (uucp@localhost) by newsfeed.cts.com (8.9.3/8.9.3) with UUCP id DAA52359; Mon, 5 May 2003 03:43:52 -0700 (PDT) Received: by fatcity.com (26-Feb-2001/v1.0g-b72/bab) via UUCP id 0058F386; Mon, 05 May 2003 02:56:37 -0800 Message-ID: Date: Mon, 05 May 2003 02:56:37 -0800 To: Multiple recipients of list ORACLE-L X-Comment: Oracle RDBMS Community Forum X-Sender: Rachel Carmichael Sender: root@fatcity.com Reply-To: ORACLE-L@fatcity.com Errors-To: ML-ERRORS@fatcity.com From: Rachel Carmichael Subject: Re: Redo Logfile content- (A)SQL Statements OR (B)Modified Data Block OR (C)BOTH 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=us-ascii Content-Transfer-Encoding: 7bit read the documentation, it's pretty clear on what's in the redo logs --- Saminathan_Seerangan@i2.com wrote: > Dear All DBAs, > > I've a very basic doubt. I got size of 300MB archive > redo logfile for "one create table" statement. > > What do we have in Redo Log File? > (A)SQL Statements OR (B)Modified Data Block OR (C) > BOTH. > > Kindly look at case study below. > > Oracle 9iR2 Windows NT ARCHIVE LOG Mode > --------------------------------------- > > Tablespace info:- > Name : EXAMPLE > Datafile Name : example01.dbf > Extent_management : LOCAL > Allocation_type : SYSTEM > Segment_Space_Management: AUTO > Default Tablespace of : HR > > 1)Original example01.dbf datafile size 500MB; > > 2)create table HR.T2 pctfree 99 pctused 1 as select * > from dba_objects; > (used PCTFREE 99 to increase the table size by > absorbing more number of blocks) > > 3) > > SQL> select count(*) from t2; > > COUNT(*) > ---------- > 38085 > > SQL> select bytes,blocks,extents from dba_segments > where segment_name='T2' and owner='HR'; > > BYTES BLOCKS EXTENTS > ---------- ---------- ---------- > 318767104 38912 109 > > > 4)After table creation, example01.dbf datafile size > becomes 800MB; > (datafile size got increased because of Table T2 > creation) > > > Q1) How much archive will be generated between step(1) > and step(4). > (Assume that this is the only activity happened in the > DB) > > Here 60 number of 5MB archive files got > generated(close to 300 MB). > > My question about Redo log file--> > (A) Does it have actual modified blocks? OR > > OR > > (B) Does it have just the stament which has been used > to modify the datablocks? > (Using LogMiner I see only statements) > OR > > (C) BOTH > > > > > __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Rachel Carmichael INET: wisernet100@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).