Hello, Recently I spotted an auto vacuum that is constantly being run over a pg_toast table in the database. Interestingly the underlying table did not have that amount of writes that would trigger the auto vacuum every minute. When I tried to run the VACUUM manually it died with a non-existent MultiXactId error: db=# vacuum analyze verbose pg_toast.pg_toast_376621; INFO: vacuuming "pg_toast.pg_toast_376621" ERROR: MultiXactId 2915905228 does no longer exist -- apparent wraparound db=# select txid_current(); txid_current -------------- 2583853583 (1 row) db=# select datfrozenxid from pg_database where datname=‘db'; datfrozenxid -------------- 2161848861 (1 row) We did a pg_upgrade about a month ago to upgrade from 9.2 to 9.4, so I guess there might be some relation, as I do not remember having that issue before the upgrade. The question is, how can I clean the table in question and finally be able to run a vacuum over it? Regards, — Kouber Saparev -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin