To use DFSORT under z/OS, code DD statements in the runtime JCL to describe the necessary
data sets that are listed below.
- Sort or merge work
- Define a minimum of three data sets: SORTWK01, SORTWK02, SORTWK03, . . ., SORTWKnn (where nn is 99 or less). These data sets cannot be in the
HFS.
- SYSOUT
- Define for sort diagnostic messages, unless you change the
data-set name. (Change the name using either the MSGDDN keyword of the OPTION control statement in the SORT-CONTROL data set, or using the SORT-MESSAGE special register.)
- SORTCKPT
- Define if the sort or merge is to take checkpoints.
- Input and output
- Define input and output data sets, if any.
- SORTLIB (DFSORT library)
- Define the library that contains the sort modules, for example,
SYS1.SORTLIB.