Re: Migrating from 8.3 to 8.4 on the same server

From: "Greg Sabino Mullane" <greg(at)turnstep(dot)com>
To: pgsql-admin(at)postgresql(dot)org
Subject: Re: Migrating from 8.3 to 8.4 on the same server
Date: 2010-04-14 21:11:22
Message-ID: 4e01e0bb79419eabaee763bd13ed1590@biglumber.com
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> It wouldn't kill us to have two or three hours of down time,
> but I would like to avoid it.

If it wouldn't kill you, I'd suck up the time. All other solutions
are going to take additional expertise, prep, and testing.

Keep in mind that if you have tables and/or databases that don't
change frequently, you can dump those beforehand to minimize
the final downtime.

You can also put your db in readonly mode to keep it available
while the export is going on. Depending on your server layout,
(e.g. available partitions) this may or may not be worth it.

- --
Greg Sabino Mullane greg(at)turnstep(dot)com
End Point Corporation http://www.endpoint.com/
PGP Key: 0x14964AC8 201004141705
http://biglumber.com/x/web?pk=2529DF6AB8F79407E94445B4BC9B906714964AC8
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