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From: Silvio Brandani <silvio.brandani@tech.sdb.it>
To: pgsql-admin@postgresql.org
Subject: upgrade postgres 8.1.21 to version 8.3.6
Date: Tue, 13 Jul 2010 11:30:20 +0200
Message-ID: <4C3C322C.4050305@tech.sdb.it> (raw)

We need to upgrade the postgres running on our production system under 
Red Hat Enterprise Linux Server release 5.1  from version 8.1.21 to 
version 8.3.6.

we could have a stop/maintenance window of 3/4 our the sum of size of 
databases is around  1G .
Which is the best practice to execute such upgrade with possible 
rollback operation to gain in 3/4 hour this job ??
Any suggestion higly appreciated

SB

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