Auxiliary commands can control the way DFSMSdss runs. For example, you can use auxiliary commands to perform the following tasks:

• Start serial task scheduling (the default). DFSMSdss executes only one task at a time.
• Start parallel task scheduling. DFSMSdss executes two or more tasks concurrently if the required system resources (such as virtual storage, DASD, or tape volumes) are available.
• Control how DFSMSdss runs, based on the return codes of completed operations.
• Write a message to the system console.
• End your DFSMSdss job after the currently running operations and scheduled tasks complete.