I have installed Application Express Listener version : 188.8.131.52.14.26
I am wondering, should the above link work? It doesn't on my setup - I get a 404; how then do I administer the listener service? I'm not even sure what that would involve, but it would be good to be able to see what it involves.
Please note the V2.x of the APEX Listener does not have a web configuration component.
So basically , this URL should show a 404 by design. (http://localhost:8080/apex/listenerAdmin)
The administration and configuration steps have been built into the apex.war as a program that can be configured before it is deployed. This is done at the command line.
java -jar apex.war help
There is also an option (if you choose to deploy it) to allow configuration through SQL developer.
-- Tim St.