Local catalog storage program (DFHSMUTL)

The local catalog storage manager domain subpool record manipulation program, DFHSMUTL, is an MVS™ batch program that adds or removes storage manager domain subpool records to or from the CICS® local catalog data set.

These records are used to store tuning information that CICS uses to determine the optimum sizes of the subpools, and to indicate to CICS which subpools are to have the self-tuning mechanism enabled. You specify the records which you want to add or remove in control statements read from SYSIN (see Job control statements to run DFHSMUTL)..

If the local catalog is re-initialized, DFHSMUTL should be run again to add the required subpool records to the local catalog.

Note that deleting and adding a subpool record resets the tuning information for that subpool.