Thomas SIMON wrote: > Hi all, > > Since two days, autovacuum_analyze & autovacuum_vacuum does not trigger > anymore on any of my databases (but they are started on db template1). > Before, I had around at least 30 analyzes and 400 vacuums per hour on these > DBs. Are autovacuum workers all busy processing some very large? Look for them in pg_stat_activity. If not, identify what is the autovacuum launcher process doing; perhaps attach a debugger to it and see if it ever calls launch_worker() or do_start_worker(). If time longer than autovacuum_naptime lapses and it doesn't, have a look at the "stats collector process"; is that one alive and working? If you attach to it with a debugger, you should see it operate if you do a simple query in a session such as "select * from pg_stat_user_tables". In that query, also verify the autovacuum and autoanalyze timestamps. -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin