Hello. I have an unconfirmed feeling that autovac does not like system-wide statement_timeout. I.e. when I in some panic move set system-wide statement_timeout to 90 seconds, autovac stopped working (I do not know for 100% if there is a dependency). Ups... Now I checked that pg_dump has the same issue. and vacuumdb. This is all on 8.1.4 . Yeah, system-wide statement_timeout is not much of a brilliant idea :( Pozdrawiam Marcin Mańk