Data set cleanup prior to the original run

As discussed in Data set cleanup and Prevent-NCT2 processing, data set cleanup is automatically performed as part of restart and non-restarted rerun processing, but can also be performed prior to the original job run, as follows:

• Automatic Prevent NCT2 processing can be defined for all jobs by setting the NCAT2 parameter in the CTRPARM member in the IOA PARM library to YES. Data set cleanup is then be performed prior to each original job run. This is applicable only to jobs that are run under Control-M.
• Automatic Prevent NCT2 processing can be defined for specific jobs by specifying Y (Yes) for the PREVENT-NCT2 parameter in the corresponding Control-M job scheduling definitions. Data set cleanup is then be performed prior to the original runs of those jobs. The PREVENT-NCT2 parameter is described in detail in the Control-M for z/OS User Guide.
• The Data Set Cleanup Online Utility (R2) is used to request data set cleanup without an accompanying job run. A CONTROLR step is inserted in the job stream and the edited job JCL is submitted. The CONTROLR step performs the necessary data set adjustment (including step adjustment, if needed) and then stops. No further job steps are executed.

  The R2 utility is available only for jobs that have a Control-M job scheduling definition. It is described in detail in Online Facilities.

• For jobs without a Control-M job scheduling definition, Prevent-NCT2 processing (data set cleanup prior to the original run) can be requested by selecting Prevent-NCT2 as the type of processing in the Control-M/Restart Standalone panel (the R4 online utility). The utility is described in Operating Control-M/Restart in standalone mode.