Re: Redo logs on mirrored disks

From: Chris Royce <Chris_at_Royce.net>
Date: Mon, 12 Jun 2000 15:26:14 -0400
Message-Id: <10526.108757@fatcity.com>

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I run my Production databases on RAID 0+1 with the redo logs NOT duplexed. No problems in a number of years. I have had a couple of problems, however, with duplexed redo logs. Explanations on request.

Chris Royce
Jamestown NC

rsands_at_lendleaserei.com wrote:

> listers,
>
> Reading through Steve Adams web site, I came across
> the tip that says redo logs should be mirrored or
> multiplexed, but there is no need to do both. The
> explanation makes sense, but I have never run a
> production database without multiplexing redo logs,
> and the thought of doing so is a little scary!! I
> wanted to find out how many other DBA's have taken
> this approach, and if you've tried it, how much of
> performance difference have you seen? Is there any
> increased risk of data loss?
>
> TIA ... Robyn Sands
>
> --
> Author:
> INET: rsands_at_lendleaserei.com
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
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I run my Production databases on RAID 0+1 with the redo logs NOT duplexed. No problems in a number of years. I have had a couple of problems, however, with duplexed redo logs. Explanations on request.

<p>Chris Royce
<br>Jamestown NC
<p>rsands_at_lendleaserei.com wrote:
<blockquote TYPE=CITE>listers,
<p>Reading through Steve Adams web site, I came across
<br>the tip that says redo logs should be mirrored or
<br>multiplexed, but there is no need to do both.&nbsp; The
<br>explanation makes sense, but I have never run a
<br>production database without multiplexing redo logs,
<br>and the thought of doing so is a little scary!!&nbsp; I
<br>wanted to find out how many other DBA's have taken
<br>this approach, and if you've tried it, how much of
<br>performance difference have you seen?&nbsp; Is there any
<br>increased risk of data loss?
<p>TIA&nbsp; ...&nbsp; Robyn Sands
<p>--
<br>Author:
<br>&nbsp; INET: rsands_at_lendleaserei.com
<p>Fat City Network Services&nbsp;&nbsp;&nbsp; -- (858) 538-5051&nbsp;

FAX: (858) 538-5051
 San Diego, California        -- Public Internet access / Mailing Lists

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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).</blockquote> Received on Mon Jun 12 2000 - 14:26:14 CDT