BEGIN
  DECLARE
    l_instance_no number;
    l_node_id number;
  BEGIN
    SELECT instance_number INTO l_instance_no FROM v$instance;    
    l_node_id := wb_rt_service_management.add_node(l_instance_no);
    wb_rt_service_management.set_connect_spec(l_node_id, '%host:%port:%serviceName');
    commit;              
  END;
END;
/