We have 1.5 TB database that's shown an error and block all commands. The error is : "ERROR: database is not accepting commands to avoid wraparound data loss in database "dbname" HINT: Stop the postmaster and use a standalone backend to vacuum that database. You might also need to commit or roll back old prepared transactions." I tried to do vacuum in the backend mode. Also I tried to set zero_damaged_pages = on then do the vacuum again but same error appeared. The error appeared after two hours of vacuuming where verbose shows passing tables. The cause of error could be : 1- a lot of insertion queries for not existing table or 2- truncating data with 40 GB in a week, we used to do that but this is the first time we had this error. also, autovacuume is turned on. Please , I need help or any suggestion? -- View this message in context: http://www.postgresql-archive.org/database-is-not-accepting-commands-tp5961831.html Sent from the PostgreSQL - general mailing list archive at Nabble.com. -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general