Subject: Re: Upgrading with WALs
From: "Joshua D. Drake" <jd@commandprompt.com>
To: Chris Bovitz <Christopher.Bovitz@noaa.gov>
Cc: pgsql-admin@postgresql.org
In-Reply-To: <488F85BA.7030702@noaa.gov>
References: <488F85BA.7030702@noaa.gov>
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Organization: Command Prompt, Inc.
Date: Tue, 29 Jul 2008 14:07:06 -0700
Message-Id: <1217365626.24458.21.camel@jd-laptop>
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On Tue, 2008-07-29 at 16:03 -0500, Chris Bovitz wrote:
> As I mentioned earlier, we are doing major upgrades to our database 
> servers from 8.1.3 which necessitates the use of pg_dumpall.  But what 
> do we do with the WALs?  Should we delete them? Or should we leave them 
> there, and the new version of PostgreSQL will pick up where they left 
> off?  Should we turn off WAL archiving while rebuilding the database 
> with the pg_dumpall output?

You can not use one cluster on top of the other. Once you have the new
PostgreSQL installation upgraded you would remove your old one. E.g;
this will be an outage, you can not do it online (without something like
SlonY0.

Sincerely,

Joshua D. Drake


> 
> Thanks again.
> 
> 
> Chris
> 
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