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- CATALOG(catname)
- Identifies
the catalog in which the generation data group is to be defined. If
the catalog's volume is physically mounted, it is dynamically allocated.
The volume must be mounted as permanently resident or reserved. See Catalog Selection Order for DEFINE for the order in which a catalog is selected
when the catalog's name is not specified.
Abbreviation:
CAT
- catname/alias
- Names the catalog or an alias that can be resolved
to a catalog. For example, if alias ABCD relates to catalog SYS1.USERCAT,
then specifying either ABCD or SYS1.USERCAT will cause the cluster
to be defined in SYS1.USERCAT.
Abbreviation: CAT
If the catalog's volume is physically mounted, it is
dynamically allocated. Mount the volume as permanently resident or
reserved.
- EMPTY|NOEMPTY
- Specifies what action
is to be taken for the catalog entries for the GDG base when the number
of generation data sets in the GDG base is equal to the LIMIT value
and another GDS is to be cataloged. The disposition of the actual
data sets uncatalogued from the GDG base is determined by the setting
of the SCRATCH/NOSCRATCH parameter for the GDG base.
- EMPTY
- remove
all GDS entries from GDG base when a new GDS is created that causes
the GDG LIMIT to be exceeded.
Abbreviation: EMP
- NOEMPTY
- remove
only the oldest GDS entry when a new GDS is created that causes GDG
LIMIT to be exceeded.
Abbreviation: NEMP
- FIFO|LIFO
- Specifies the order in which the GDS list is returned for data
set allocation when the GDG name is supplied on the DD statement.
- FIFO
- The
order is the oldest GDS defined to the newest GDS.
- LIFO
- The
order is the newest GDS defined to the oldest GDS. This is the default
value.
The
JCL keyword GDGORDER can be used to override the value specified here
to allow individual jobs to select the order of the data.
- OWNER(ownerid)
- Identifies the generation data set's owner.
For
TSO users, if the owner is not identified with the OWNER parameter,
the TSO userid is the default ownerid.
- SCRATCH|NOSCRATCH
- Specifies what action
is to be taken for a generation data set located on disk volumes when
the data set is uncataloged from the GDG base as a result of EMPTY/NOEMPTY
processing. For generation data sets located on tape, this parameter
has no effect.
You can override the SCRATCH|NOSCRATCH attribute
when issuing the DELETE command. - SCRATCH
- The
GDS is deleted from all disks it occupies when uncatalogued from the
GDG base, regardless of whether it is SMS-managed or not.
Abbreviation:
SCR
- NOSCRATCH
- If
the data set is a non-SMS managed data set it is not removed from
any of the volumes it occupies. If the data set is an SMS-managed
data set it is recataloged as a non-VSAM data set in rolled-off status,
and is no longer associated with the GDG base. It is not deleted
from any of the SMS-managed volumes it occupies.
Abbreviation: NSCR
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