CRCN - Monitor Resource Managers

CRCN is a system transaction that is started at system initialization. However, for exceptional scenarios, it can be stopped and started from a 3270 terminal.

Parameters:

function can be one of:

STOP or STOP I

Terminates CRCN at the end of its delay. To terminate CRCN immediately, use the "I" option.

CRCN STOP or CRCN STOP I

Note: Use STOP option in emergency situations only, and afterwards, restart CRCN as soon as possible. If CRCN was started at system initialization, the system continues to behave as if it were still running even after a STOP function is issued. These means that neither the connection nor the connection state is monitored until CRCN restarts.

START

If CRCN has been stopped and needs to be restarted, use the CRCN START function to issue an EXEC CICS START for the CRCN transaction. The started CRCN transaction does not interact with the 3270 screen. Verify the console for the list of resource managers being monitored, and their state.

CRCN START

LIST

Triggers an instance of CRCN to list the resource managers currently monitored, and their state. This instance iterates only once in the resource managers list, then displays the list and exits. This single-mode CRCN can be run concurrently with the long-running CRCN task to verify the connections state.

CRCN LIST

REFRESH

Triggers an instance of CRCN to refresh the list of resource managers currently monitored and their state. This allows an attempt to reconnect a resource manager before the long-running instance of CRCN delay expires. This instance iterates only once in the resource managers list, then displays the list and exits.

CRCN REFRESH

Note: The REFRESH and LIST functions are instances of CRCN with restricted functionality. The Monitoring CRCN does not have to be active for one of these instances to execute. The REFRESH function should only be used in an emergency situation.