Commands can be issued to the z/OS Master Controller from one or more of the following sources:
- The Operator’s console - Commands entered from the operator’s console adhere to normal z/OS conventions such as ‘P’ for STOP and ‘F’ for MODIFY. Execution of commands from the operator’s console is immediate.
- Replying to an outstanding WTOR message - In order to issue commands from an outstanding WTOR message, WTOR=Y must be specified in the startup parameter file. Execution of commands from an outstanding WTOR is immediate.
- From a IBM MQ command queue - In order to issue commands from the IBM MQ command queue, the CMDQUE keyword must contain a valid IBM MQ queue name. The SQDCOPYQ utility is used to insert commands in the command queue. A sample JCL member (MASTCMD) is supplied in the SQDATA.V4nn.CNTL library.
Note: When issuing commands through the command queue, there may be a delay of up to 30 seconds before the command is received by the z/OS Master Controller.
| Command Function | Command | Description |
| Display Process Status | D | Displays the status of the Connect CDC SQData subtasks running under the Master Controller |
| Report | The output of the runtime report can be found in the SYSPRINT or REPORT DD statement for the engine subtask. | |
| Test FAILJCL for Engine | J nn | Submits the fail JCL for an process instance |
| Reset FAILJCL Counter | F nn | Resets the fail count for an process instance to 0 |
| Purge Process | P nn | Forces a termination of a process instance |
| Start Process Instance | S nn | Starts a specific process instance |
| Shutdown Master Controller | STOP | Shuts down the Master Controller |
| Terminate Process Instance | T nn | Stops a specific process instance normally |