anyname DD Statement

A DD statement must be included for each permanently mounted or mountable volume referred to in the job step. These DD statements are used to allocate devices: they are not true data definition statements. Concatenated DD statements are not allowed.

Because IEHLIST modifies the internal control blocks created by device allocation DD statements, these DD statements must not include the DSNAME parameter. (All data sets are defined explicitly or implicitly by utility control statements.)

The DD statement can be entered:

  //anyname DD UNIT=xxxx,VOLUME=SER=xxxxxx
,DISP=OLD

The UNIT and VOLUME=SER parameters define the device type and volume serial number without requiring that a real data set be allocated on the volume.