Matteo Sgalaberni <sgala@xxxxxxxxx> writes: > 22 daemons that have a persistent connection to this database(all > connection are in "idle"(no transaction opened). You may think that, but you are wrong. > INFO: "cliente": found 0 removable, 29931 nonremovable row versions in 559 pages > DETAIL: 29398 dead row versions cannot be removed yet. The only way the above can happen is if there are some fairly old open transactions. Looking in pg_stat_activity might help you identify the culprit(s). regards, tom lane