Normally, System Management Facilities (SMF) records are written to the SMF data sets at DFSMShsm step termination. Because DFSMShsm uses dynamic allocation and processes thousands of different data sets each day, this process can take a very long time. Also, these records are kept in DFSMShsm address space which can lead to the exhaustion of virtual storage.

For these reasons, use the SMF option to avoid doing DD consolidation. If you do use DD consolidation, request that it be done periodically by requesting SMF interval recording for started tasks. Refer to z/OS MVS System Management Facilities (SMF) for an explanation of how to request these options.