Oracle-L: Recovery Plan for Upgrade !!

From: Reddy, Madhusudana <Madhusudana.Reddy_at_bestbuy.com>
Date: Fri, 15 Aug 2003 08:44:26 -0800
Message-ID: <F001.005CAED6.20030815084426@fatcity.com>

Hello All,
We are upgrading the database from version 8.1.7.3 to 8.1.7.4. What if the Upgrade fails ( I did it couple of times , but never failed for me), How to recover to previous version??

Here is what I think , please correct me and add some more points here.

Backup the $ORACLE_HOME for version 8.1.7.3
Take backup of SYSTEM tablespace ( after the clean shutdown of the DB and just before Upgrade )
Make all other tablespaces READ ONLY ( except system / TEMP ( we use tempfiles )/ RBS ) When we running catalog.sql and catproc.sql

In case of any failure while patching , can we start the DB after restoring $ORACLE_HOME and System tablespace from backups ??

Can some one share your experiences , also it would be beneficial for me , if someone send me a upgrade checklist / process offline

THANKS !! Madhu Reddy

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Please see the official ORACLE-L FAQ: http://www.orafaq.net
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Author: Reddy, Madhusudana
INET: Madhusudana.Reddy_at_bestbuy.com

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