> I don't believe pg_postmaster_start_time() is reset by a > backend-crash-and-restart sequence ... but the stats collector data will > be. You might want to look into the postmaster log for evidence of > such a crash. I'm sure that the backend has neither restarted nor crashed at that moment. Anyway, I've also confirmed this in the server log, I don't find any evidence or trace of this happened. Is there any other possible reasons that could make autovacuum daemon to update it to NULL value? NOTE: "log_min_messages" is set to NOTICE. -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
