The Message Listener deployment pattern is used in integration scenarios where the external system connecting to Oracle Banking Trade Finance Cloud Service wants to connect to Oracle Banking Trade Finance Cloud Service using queues.

This is especially applicable to systems that prefer to use queues-based approach without wanting to wait for the reply.

Here external system sends messages in XML format to request queue on which an MDB is listening. When a message arrives on the queue, it is picked up for processing. After the necessary processing is done in Oracle Banking Trade Finance Cloud Service, based on the request, the response is sent to the response queue as an XML message.