Can you view the Oracle listener status from OEM? Is it possible to view/monitor the listener status from Oracle Enterprise Manager (OEM)?  If so, how is this done?
Yes, we can view the listener status from OEM (Oracle Enterprise Manager).
I am uploading the two screen shot related to listener in Oracle 11g,OEM(Oracle Enterprise Manager) status.


and the current 'Up Status' of Listener.


Note: I have highlighted some part due to security reason.