CCTL failures

CCTL failures commonly include CCTL region failures, in which a program is not stopped, and when a program is stopped

CCTL region failure
If a CCTL fails, it normally disconnects from the IMS DBCTL system and has no effect on the IMS DBCTL system itself. The CCTL threads are terminated immediately or after they complete their current DBCTL request. These thread terminations appear as DFS554I messages. The programs are not stopped.
CCTL thread failure
A CCTL thread failure can occur if the CCTL thread makes a database resource adapter (DRA) request, and IMS ends abnormally during that request.
CCTL thread looping
Use CCTL commands to determine if the CCTL is looping or if it has issued a DBCTL request and is waiting for a response. Refer to your CCTL documentation if the CCTL is looping. Otherwise, issue the /DISPLAY command to find the region with the recovery token that corresponds to the CCTL task that is waiting for a response from DBCTL. Then use the /STOP REGION command to force that thread to end.

Parent topic: IMS failure recovery