Unallocation end processing

The system unallocates data sets and their associated volume and devices at the end of a job step or at the end of the job.

Dynamic Unallocation

To unallocate a data set while a step is still executing, code:

   //ddname  DD  FREE=CLOSE,...

Use FREE=CLOSE to allow the system to reallocate a volume or device that is used frequently in the system.

Example

//DD1 DD DSNAME=DS6,DISP=OLD,UNIT=TAPE,VOLUME=SER=111111,FREE=CLOSE