Am Dienstag 13 Juli 2010 11:30:20 schrieb Silvio Brandani: > We need to upgrade the postgres running on our production system under > Red Hat Enterprise Linux Server release 5.1 from version 8.1.21 to > version 8.3.6. Have a look here: http://wiki.postgresql.org/wiki/RPM_Installation#How_do_I_perform_a_major_upgrade.3F You should test the restore of your dump on another port or maschine first. this might be of interest for you as well: http://blog.endpoint.com/2010/01/postgres-upgrades-ten-problems-and.html > Which is the best practice to execute such upgrade with possible > rollback operation Do a filesystem backup. You should test the restore of your dump on another port or maschine first. > to gain in 3/4 hour this job ?? That depends on your hardware. Jens -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin