Generation data set scratch summary

DFSMShsm automatically scratches rolled-off generations at roll-off time when:

A non-date-protected generation data set has the SCRATCH option.
DFSMShsm is patched for immediate scratch of migrated, date-protected, generation data sets with the SCRATCH option.

DFSMShsm automatically scratches rolled-off generations during migration cleanup when:

DFSMShsm is not patched for immediate scratch at roll off time of migrated, date-protected, generation data sets defined with the SCRATCH option and the expiration date is later met during migration cleanup.
A date-protected generation data set has the NOSCRATCH option and the expiration date is met.

Guideline: If you need to use the preceding PATCH commands, be aware of the additional responsibility associated with their use. DFSMShsm is designed to maintain the security of data that is provided by expiration dates and passwords. If you use these commands, you are using DFSMShsm in a way that is not considered to be part of its normal implementation.