Matheus de Oliveira wrote > It changed in recent versions (9.3 or 9.4, I don't recall exactly which) > and moved to tuple header, but what you described is exactly what was > done, > the xid was 2. Should the relfrozenxid of pg_class then equal 2 for very old and already vacuumed tables? Because that is not what I am seeing. -- View this message in context: http://postgresql.nabble.com/Avoiding-Refreezing-XIDs-Repeatedly-tp5837222p5837247.html Sent from the PostgreSQL - performance mailing list archive at Nabble.com. -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance