2.2 Outbound Processing

The TMA TCP for IMS product can also initiate TCP/IP connections with remote systems. These outbound sessions are used to send IMS client requests to remote systems for processing.

As shown in the figure below, an IMS client transaction initiates a request by placing a properly formatted message into the IMS message queue. When running the gateway, two IMS user exits must be installed to route messages to the OTMA client. (For more information about request/response processing, refer to the Programming Oracle TMA TCP for IMS, and for sample user exits, refer to the Sample JCL and User Exits.) The gateway retrieves the request and forwards it to the appropriate remote system for processing. When the response (if required) is received from the remote system, it is returned to IMS for delivery to a transaction that processes the response.

Figure 2-3 IMS Outbound Processing