Duplexing Archived Log Files

From: DENNIS WILLIAMS <DWILLIAMS_at_LIFETOUCH.COM>
Date: Thu, 06 Dec 2001 14:09:04 -0800
Message-ID: <F001.003D6879.20011206102858@fatcity.com>

Is anyone using the LOG_ARCHIVE_DUPLEX_DEST parameter? Any problems with it?

We are on Oracle 8.1.6 on Compaq Tru64. On our ERP 150-gig. database, we are currently doing a cold backup weekly. This means that we are very dependent on archive logs.

• Recovery time isn't a big concern. In the event of a failure, recovery time isn't that critical. Loss of a week of work would be.
• We have tried hot backups successfully on smaller databases, but we found that once we issue ALTER TABLESPACE BEGIN BACKUP there was often a delay of hours for that command to complete. So we gave up on hot backups.
• We are starting to work with RMAN and feel in the long run this will be an ideal solution. Thanks to everyone for answering my newby RMAN questions.
• Recently Oracle has added a feature to duplex the archive log files. This sounds like it would lessen our archive log vulnerability. However, it causes my sys admin more work, so I would appreciate some feedback before I add this burden to his work. Thanks for any thoughts you care to share. Dennis Williams DBA Lifetouch, Inc. dwilliams_at_lifetouch.com -- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: DENNIS WILLIAMS INET: DWILLIAMS_at_LIFETOUCH.COM

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