Alvaro Herrera <alvherre@xxxxxxxxxxxxxxxxx> writes: > Manuel Sugawara wrote: > > Hi Manuel, > >> The funny thing is that there was no open transactions, even after >> restarting the cluster the same message was logged. Today, the >> database stopped working as expected: >> >> ERROR: database is shut down to avoid wraparound data loss in database "postgres" >> HINT: Stop the postmaster and use a standalone backend to VACUUM in "postgres" > > I suggest you look for temp tables that have not been reclaimed. We've > had a couple of reports where leftover temp tables have stopped the > frozen-xid counter from advancing. (They would have a very old > relfrozenxid.) In each database executed: select relname, age(relfrozenxid) from pg_class where relnamespace = '10406'::oid; (note that 10406 is the oid of the pg_temp_1 namespace) none of them showed temp tables, Is this the correct way?, Any other idea?. Regards, Manuel.