* Scott Marlowe <scott.marlowe@xxxxxxxxx> [2008-10-06 18:07:39 CEST]: > On Mon, Oct 6, 2008 at 9:34 AM, Markus Wanner <markus@xxxxxxxxxx> wrote: > > Well, it's a general Postgres problem, not a Debian one. Upgrading > > between major versions requires a full dump/restore cycle, for which the > > downtime is proportional to the database size. For small or medium > > databases that's not an issue, but above some Gigabytes, that begins to > > hurt pretty badly. > > In that case I prefer to have both db versions available and use slony > to upgrade in place. We recently upgraded from 8.1 to 8.3 and work > the downtime was measured in seconds (the time it took slony to switch > the two servers). Good to hear. Though I see another problem here, slony is always only available for a single postgres version in the current packaging, so that upgrading path isn't that easy as you make it sound... At least not if you want to do it on a single system and not through two different machines. So long. :) Rhonda
