Dear All, Thanks in advance. In my Linux system, below error is found and after 10~12 hours, WAL file in pg_xlog directory are increased continuously. PostgreSQL:ERROR: deadlock detected DETAIL: Process 12345 waits for AccessShareLock on relation 16446 of database 16385; blocked by process 23136. Process 23136 waits for ShareLock on relation 16482 of database 16385; blocked by process 12345. CONTEXT: SQL statement "SELECT 1 FROM ONLY "public"."table name" x WHERE "id" = $1 AND "table_id" = $2 FOR SHARE OF x" Is this deadlock error is link with WAL file of pg_xlog? Please share your opinion. Regards, Yogesh -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general