Data sets excluded from DEFRAG or CONSOLIDATE processing

DFSMSdss automatically excludes and does not relocate the following types of data sets in a DEFRAG or CONSOLIDATE operation:

User-specified data sets (EXCLUDE)
Data sets that do not satisfy all BY criteria
Indexed sequential data sets
VSAM data sets not cataloged in an integrated catalog facility catalog
Key range VSAM data sets
Catalogs (system and user)
The VTOC index data set
RACF® control data sets (any data set with a name in the form SYS1.RACF*.**)
Page, swap, and SYS1.STGINDEX data sets
VSAM volume data sets (VVDS)
Unmovable data sets
Data sets allocated by absolute track
Data sets that it cannot serialize for exclusive access
VSAM data sets that have Record Level Sharing (RLS) information associated with them (only the first extent of this type of data set is excluded from the DEFRAG operation).
For CONSOLIDATE operation, user specified data sets (do not satisfy INCLUDE criteria).

Because the DEFRAG and CONSOLIDATE functions do not relocate these data sets, the effectiveness of a DEFRAG and CONSOLIDATE run is affected by their presence.

Place the following data sets in the EXCLUDE list if they are present on the volume being defragmented:

If you plan to defragment a volume containing the active RACF database, you must place the RACF database data sets in the EXCLUDE list.
Any data that has been defined as a retained DLF object for use with Hiperbatch.

Note: Exclude system data sets that are opened and are being accessed without an enqueue.