Hello all, I'm getting this error after installing pg-8.3.3 on a test system which had 8.1.4 shell> su postgres -c "/usr/bin/postmaster -D /var/pgsql/data" FATAL: database files are incompatible with server DETAIL: The data directory was initialized by PostgreSQL version 8.1, which is not compatible with this version 8.3.3. I guess I should get a pg_dumpall before upgrading and put the data back after the upgrade. Is this correct ? Is there a more apropriate approach ? thanks joao