From: Bill Moran <wmoran@collaborativefusion.com>
To: Kevin Grittner <Kevin.Grittner@wicourts.gov>
Cc: Kevin Kempter <kevin@kevinkempterllc.com>
Cc: Pgsql performance <pgsql-performance@postgresql.org>
Subject: Re: significant vacuum issues - looking for suggestions
Date: Fri, 24 Aug 2007 17:08:13 -0400
Message-ID: <20070824170813.72c0f39e.wmoran@collaborativefusion.com> (raw)
In-Reply-To: <46CEFEB4.EE98.0025.0@wicourts.gov>
References: <200708241357.23629.kevin@kevinkempterllc.com>
<46CEFEB4.EE98.0025.0@wicourts.gov>
In response to "Kevin Grittner" <Kevin.Grittner@wicourts.gov>:
> >>> On Fri, Aug 24, 2007 at 2:57 PM, in message
> <200708241357.23629.kevin@kevinkempterllc.com>, Kevin Kempter
> <kevin@kevinkempterllc.com> wrote:
> > c) setup WAL archiving on the 8.1.4 cluster
> >
> > d) do a full dump of the 8.1.4 cluster and restore it to the new 8.2.4
> > cluster
> >
> > e) stop the 8.2.4 cluster and bring it up in recovery mode, pointing it
> > to
> > the directory where we're archiving the 8.1.4 cluster's WAL segments.
>
> You can't use these techniques for a major version upgrade.
> Use pg_dump piped to psql. That will also eliminate all bloat.
If you can't afford any downtime, you may be able to use Slony to
do your upgrade. However, slony adds overhead, and if this system
is tapped out already, it may not tolerate the additional overhead.
--
Bill Moran
Collaborative Fusion Inc.
http://people.collaborativefusion.com/~wmoran/
wmoran@collaborativefusion.com
Phone: 412-422-3463x4023
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: wmoran@collaborativefusion.com, Kevin.Grittner@wicourts.gov, kevin@kevinkempterllc.com
Subject: Re: significant vacuum issues - looking for suggestions
In-Reply-To: <20070824170813.72c0f39e.wmoran@collaborativefusion.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox