DECLARE
   CURSOR UserId_in_11_cur
   IS
      SELECT userid
        FROM VW_usrapi_user_group
       WHERE GroupId = 11;
BEGIN
   FOR  VW_usrapi_user_group
   IN UserId_in_11_cur
   LOOP
      DBMS_OUTPUT.put_line (
         VW_usrapi_user_group.UserId);
   END LOOP;
END;