incompatible postgresql data base files after update from FC3 to FC4

[Bruno Wolff III]

On Thu, Jun 23, 2005 at 21:17:14 +0200,
  Thomas Zehetbauer <thomasz at hostmaster.org> wrote:
> With PostgreSQL you always have to do a time consuming dump/restore of
> your databases when doing a major and even some minor version upgrades,
> live with it or stop using it.

Initdbs between minor releases are not required. However there have been
a couple of updates where you wouldn't get all of the changes without
doing an initdb. In those cases you can decide if getting the change is worth
the trouble.

There are some other options for minimizing downtime using replication
via slony, but that isn't normally someting someone using Fedora is
likely to need.