Hi, > is it safe to move the PGDATA directory from one system to another when migrating from one operating system to another? > For example: migrating from Debian to RHEL, or from RHEL4 to RHEL5? > The database is of course shutdown properly, and the PG major versions match. > Or is a dump/restore necessary in these cases? Besides the other reply, take into account little- versus bigendian changes if you switch hardware. But just out of curiosity: why propose against a dump/restore ? I mean: when I upgrade between major releases I dump as well, as it is recommended. I never ran into trouble, you know. Regards, Robert -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin