Thanks Guys. I wrote this function in a specific schema and granted to the dba users only. Thanks. Problem solved. -- View this message in context: http://postgresql.1045698.n5.nabble.com/Questions-of-the-privileges-to-use-the-pg-cancel-backend-and-pg-terminate-backend-function-Thanks-tp5618129p5627387.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