データベースが落ちてた。 2009-09-27 06:35:15 JST LOG: transaction ID wrap limit is 2147484146, limited by database "template1" 2009-09-27 06:35:15 JST WARNING: database "template1" must be vacuumed within 536699235 transactions 2009-09-27 06:35:15 JST HINT: To avoid a database shutdown, execute a full-database VACUUM in "template1". 2009-09-27 06:35:15 JST LOG: autovacuum process (PID 8137) was terminated by