Lewis Kapell <lkapell@setonhome.org> wrote:
> Could the WAL/PITR method then be used to upgrade from 8.3 to 8.4
> on the same server and avoid having the significant downtime of
> dump/restore?
No, but you might want to check out pg_migrator.
http://pgfoundry.org/projects/pg-migrator/
-Kevin