DDDEF entries

You can use DDDEF entries to provide SMP/E with information it needs to allocate any of the following:

Permanent data sets, such as target libraries, distribution libraries, and SMP/E data sets
Temporary data sets
SYSOUT data sets
Work data sets
Pathnames for elements and load modules residing in a UNIX file system

Note: A member of a partitioned data set cannot be specified using a DDDEF entry.

The name of the DDDEF entry must match the ddname of the data set it describes and the entry must exist in the zone that uses the data set. DDDEF entries provide more flexibility than DD statements; they enable different zones to use different data sets for the same ddname and they use resources more efficiently because they allow SMP/E to allocate only the data sets it needs.

DDDEF entries can include the following information:

Data set name
Unit type
Volume serial number
Initial data set status: NEW, OLD, MOD, or SHR
Final data set status: KEEP, DELETE, or CATALOG
How the data set is to be allocated: blocks, cylinders, or tracks
Primary and secondary values for space allocation
Whether the data set should be RACF-protected
Whether the data set is SMS-managed
Directory information used to allocate the pathname for an element or load module residing in a UNIX file system.

For more information about DDDEF entries, see SMP/E for z/OS Reference.