"Nick Fankhauser" <nickf@xxxxxxxxxx> writes: > One other question- when I'm vacuuming, I always get the warning: > WARNING: some databases have not been vacuumed in <big number> transactions > HINT: Better vacuum them within <big number> transactions, or you may > have a wraparound failure. > I get these even after all DBs except template0 have been freshly vacuumed. Why? Do your vacuums change the pg_database.datfrozenxid values for the databases? The only reason I can think of for them not to do so is if you're not doing them as superuser ... regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match