Dawid Kuroczko escribió: > I'm using 8.3.0 and I see that autovacuum processes in > pg_stat_activity have xact_start. > > As far as I know, since at least 8.2.x the VACUUM does not start a new > transaction. > If that statement is correct, the xact_start column in > pg_stat_activity should be NULL... > Why does it matter? Monitoring. It's good to know the age of oldest > running transaction, and autovacuuming is well, adding noise. Autovacuum certainly uses transactions ... ?? -- Alvaro Herrera http://www.CommandPrompt.com/ PostgreSQL Replication, Consulting, Custom Development, 24x7 support ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
