Hi thanks for help. Now i know why pg_notify() does not works for me. I'm named listener in c# code 'Demo' and this is a problem. In name can't be a capital letter because postges change this name to small letter i think. So if someone want use pg_notify use only small letter like this "pg_notify('demo', variable);" and it will be works -- View this message in context: http://postgresql.1045698.n5.nabble.com/Notiffy-problem-tp5714744p5715157.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