Restarting an ISC TCP/IP session

The CICS® AUTOCONNECT function only acquires a connection automatically when CICS and IMS communicate for the first time. If you shut down a CICS region and restart it, CICS recovers the IPCONN resources from the local CICS catalog and does not automatically reacquire any ISC TCP/IP session. You must issue IMS /OPNDST commands for both statically defined terminals and dynamically defined nodes to re-establish communications again. The CICS AUTOCONNECT facility is set on the IPCONN statement within the CICS DFHCSD data set that contains resource definitions.

If the ISC TCP/IP connection was stopped in IMS Connect, be sure to restart the connection in IMS Connect before restarting ISC communication in IMS. In IMS Connect, the communication can be stopped on the ISC connection between IMS and IMS Connect, on the TCP/IP connection between IMS Connect and CICS, or both.