A listener is a Process Commander background process that waits on a TCP/IP port or a similar messaging facility for arriving messages. Listeners can execute on one node or on multiple nodes in a multinode system.

Listeners are defined by data objects created with the following forms:

• Email Listener form (Data-Admin-Connect-EmailListener class)
• File Listener form (Data-Admin-Connect-FileListener class)
• JMS Listener form (Data-Admin-Connect-JMSListener class)
• JMS MDB Listener form (Data-Admin-Connect-JMSMDBListener class)
• MQ Listener form (Data-Admin-Connect-MQListener class)

Through initServices elements in the prconfig.xml file, you can control whether listeners of each class automatically start when the Process Commander system starts. You can start and stop listeners using the Listener Management menu of the System Management application.

To debug listener processing, you can use the Tracer to connect to the listener requestor, remote logging, or the System Management application.

	appender, clock daemon, remote logging
	About the System Management application Debugging with the Tracer How to install and use remote logging

Definitions — L