Use wfagtlst.sql to run a PL/SQL agent listener to monitor an agent for inbound event messages. When a message is received, the Event Manager searches for and executes any enabled subscriptions by the local system to the event with a source type of External, and also any enabled subscriptions by the local system to the Any event with a source type of External.

Use the script as follows:

sqlplus <user> @wfagtlst <agent_name> 
Enter password: <password>

Replace <agent_name> with the internal name of the agent that you want to monitor for inbound event messages.