> I want to upgrade a system from 7.3.8 ro 8.1.5 > I am new to Psql and looking for handy hints > Any known problems or pit-falls ? > Anything we need to do in preparation ? The Postgresql manual is a good place to start: http://www.postgresql.org/docs/8.1/interactive/install-upgrading.html http://www.postgresql.org/docs/8.1/interactive/migration.html This will give you all the guidelines to follow to safely upgrade your server. Regards, Richard Broersma Jr.