GDG: Generation Data Group Base Entry, Special Fields

The special fields for a generation data group base entry describe attributes of the generation data group.
ATTRIBUTES
This field includes the following fields:
EMPTY
All generation data sets in the generation data group are uncataloged when the maximum number (given under LIMIT) is reached and one more data set is to added to the group.
Start of changeEXTENDEDEnd of change
Start of changeThe maximum number of generation data sets can be 999.End of change
LIMIT
The maximum number of generation data sets allowed in the generation data group.
NOEMPTY
Only the oldest generation data set in the generation data group is uncataloged when the maximum number (given under LIMIT) is reached and one more data set is to be added to the group.
Start of changeNOEXTENDEDEnd of change
Start of changeThe maximum number of generation data sets can be 255.End of change
Start of changeNOPURGEEnd of change
Start of changeDoes not override expiration dates when scratching the GDS (see PURGE below).End of change
NOSCRATCH
Generation data sets are not to be scratched (see SCRATCH below) when uncataloged.
Start of changePURGEEnd of change
Start of changeOverrides expiration date when scratching a GDS.End of change
SCRATCH
Generation data sets are to be scratched (that is, the DSCB describing each one is removed from the VTOC of the volume where it resides) when uncataloged.
Parent topic: Description of Keyword Fields