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 g3OHCTB02183 for ; Wed, 24 Apr 2002 13:12:29 -0400 Received: from fatcity.UUCP (uucp@localhost) by newsfeed.cts.com (8.9.3/8.9.3) with UUCP id KAA74639; Wed, 24 Apr 2002 10:20:00 -0700 (PDT) Received: by fatcity.com (26-Feb-2001/v1.0g-b71/bab) via UUCP id 0044E31C; Wed, 24 Apr 2002 10:12:22 -0800 Message-ID: Date: Wed, 24 Apr 2002 10:12:22 -0800 To: Multiple recipients of list ORACLE-L X-Comment: Oracle RDBMS Community Forum X-Sender: "Gogala, Mladen" Sender: root@fatcity.com Reply-To: ORACLE-L@fatcity.com Errors-To: ML-ERRORS@fatcity.com From: "Gogala, Mladen" Subject: RE: LOG_BUFFER Parameter Question 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: multipart/alternative; boundary="----_=_NextPart_001_01C1EBB3.00262DE0" ------_=_NextPart_001_01C1EBB3.00262DE0 Content-Type: text/plain Alternatively, you size it until redo_log_space_wait goes away from v$system_events. -----Original Message----- Sent: Wednesday, April 24, 2002 4:59 AM To: Multiple recipients of list ORACLE-L Yep, wrong tree. size it like: redo blocks per tx * tx/sec * 3/2 * Anjo. Denham Eva wrote: Hello, I have been wondering about how to work out what the optimal LOG_BUFFER parameter, compared to the physical size of the REDOLOG file, for the best optimization and writes from buffer to log. Or am I barking up the wrong tree? Is there some other way of doing this. i.e. redolog file size is 10M and LOG_BUFFER is 512000. Can this be optimized better? Denham Eva Oracle DBA In UNIX Land On a quiet Night, you can hear the Windows machines reboot. _____ This e-mail message has been scanned for Viruses and Content and cleared by MailMarshal - For more information please visit www.marshalsoftware.com _____ ------_=_NextPart_001_01C1EBB3.00262DE0 Content-Type: text/html
Alternatively, you size it until redo_log_space_wait goes away from v$system_events.
-----Original Message-----
From: Anjo Kolk [mailto:anjo@oraperf.com]
Sent: Wednesday, April 24, 2002 4:59 AM
To: Multiple recipients of list ORACLE-L
Subject: Re: LOG_BUFFER Parameter Question

Yep,

wrong tree. size it like: redo blocks per tx * tx/sec * 3/2 *<physical blocksize>

Anjo.
 

Denham Eva wrote:

 

Hello,

I have been wondering about how to work out what the optimal LOG_BUFFER parameter,
compared to the physical size of the REDOLOG file, for the best optimization and writes from buffer to log.
Or am I barking up the wrong tree? Is there some other way of doing this.

i.e. redolog file size is 10M and LOG_BUFFER is 512000.
Can this be optimized better?

Denham Eva
Oracle DBA
In UNIX Land
On a quiet Night, you can hear the Windows machines reboot.

This e-mail message has been scanned for Viruses and Content and cleared by MailMarshal - For more information please visit www.marshalsoftware.com
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