Re: Upgrading Postgres question

On Wed, Nov 5, 2008 at 2:19 PM, Tony Fernandez
<Tony.Fernandez@vocalocity.com> wrote:
> Hello all,
>
>
>
> I am in the process of updating my DB on Postgres 8.1.11 to 8.3.4.  I also
> use Slony 1.2.14 for replication.

Then you're set.  One of the primary purposes of slony is upgrading in
place.  Take one of your backup slaves offline, upgrade it to 8.3,
recreate it as a slony slave, and let it run for a few days.  When all
seems well, swap the two servers.  downtime measured in seconds.