Marc Fromm <Marc.Fromm@xxxxxxx> wrote: > Has anyone upgraded from 8.1 to the latest version 9.0.1? Can you > do it in one jump? I would expect it to work if you use pg_dump from the newer version against the old database. The biggest compatibility issue is probably going to be that in 8.3 some automatic casts to and from text were eliminated. You would definitely want to do a preliminary conversion and test your applications before doing the final conversion. > Can it be done using yum on a RHEL server? You will probably need both 8.1 and 9.0 installed at the same time. I don't know if yum will overwrite the old version or put the new one in its own location without disturbing the old one. -Kevin -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin