By default, an IBM i installation creates and attempts to start the Connect CDC Listener in a subsystem called CONNECTCDC from the Command library specified on the IBM i Installation Parameters window.
After the CONNECTCDC subsystem is installed and defined, it is possible to modify an existing subsystem so that the Change Selector can be defined to the subsystem. Then, when the subsystem is started, the Change Selector is started automatically along with the Connect CDC Listener.