DUMPCLASS(RESET and NORESET): Specifying whether DFSMSdss resets the change bit for each data set following a full-volume dump

Explanation: RESET and NORESET are mutually exclusive, optional subparameters of DUMPCLASS specifying whether DFSMSdss resets the change bit for each data set after a full-volume dump is successfully performed.

Subparameter	Explanation
RESET	DUMPCLASS(RESET) specifies that the change bit for each data set should be reset.
NORESET	DUMPCLASS(NORESET) specifies that the change bit for each data set should not be reset.

The specified option affects whether DFSMShsm makes an incremental backup version of the data sets the next time the volume is processed by incremental backup with the BACKVOL command and whether the data sets have not been changed since the full-volume dump.

If multiple dump copies are made concurrently, each copy is associated with a different dump class. If RESET is specified for any of these dump classes, then the RESET option is specified on the command to DFSMSdss.

Defaults: If neither RESET nor NORESET is specified, the default is NORESET when a dump class is defined for the first time.

Note:

If a dump class is already defined (certain characteristics are changed) and neither RESET nor NORESET is specified, the previous specification remains unchanged.
If you use the APPLYINCREMENTAL subparameter with the FROMDUMP parameter of the RECOVER command, specify the NORESET subparameter.
Do not specify RESET for a dump class that is used for creating fast replication dump copies.