Hi list! I've to do a migration of postgresql from version 8.2 to 8.3 in one server. The problem I see here is, to avoid data loss (people still using the web site that uses postgres), I'll need to stop postgres 8.2, make a pg_dumpall, and then restore that information in 8.3. Taking some considerations, like database size, server, etc. I estimate that it will be at least 30 minutes of downtime, and that's pretty much time. I've thinking in the possibility of doing some kind of master/slave with both versions (I must change the default port in one of them, as everything must happen on a single machine), and find some useful links like: http://wiki.postgresql.org/wiki/Replication%2C_Clustering% 2C_and_Connection_Pooling http://momjian.us/main/writings/pgsql/replication.pdf I'd love to read some experiences or advices, since I haven't done it before. Also if you have some link o document that you think I must read, it'll be welcomed. Thanks to all. Martín -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin