Execution command line (JCL PARM statement)

The execution command line is coded in the PARM statement of the JCL. The command line comprises the DDNAME of at least one map followed by one or more commands that affect the execution of that same map. The map DDNAME is required; execution commands are optional.

The first argument in a command line string is always the DDNAME that identifies the map to be executed. The map DDNAME may indicate a sequential dataset that contains the z/OS Batch-specific map (Example 1), a PDS member that contains the z/OS Batch-specific map (Example 2), or a member name (Example 3).