Hello, > I've just upgraded to 9.4.5 and hope that helps. I'll keep you posted. After upgrade everything works fine for almost 4 days. Thank you all for help. Best Regards, Michal -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin