
DD Statements for Tape and Disk Datasets DSN Parameter
Chapter 6. BIM-EPIC DD Statements 6-23
For compatibility with MVS, the current version is indicated by a zero instead of a one as in
the DSN Catalog. That means that when you enter a version number with a minus sign, it
should be one less than the version number displayed in the DSN Catalog. For example, if the
version number in the DSN Catalog is 3, specify DSN=dataset-name(-2).
Also note that specifying '(+n)' is not necessary for output datasets. Specifying the dataset
name is sufficient to cause a new version to be created. However, specifying '(+n)' with
DISP=(x,CATLG) causes disk datasets to be cataloged as generation datasets, if the DDGEN
configuration option is set to YES. If DDGEN is set to NO, and you do not specify
LABEL=RETPD or LABEL=EXPDT, the dataset is cataloged as a non-generation dataset.
Specifies which area of an ISAM dataset is being defined. INDEX indicates the cylinder
index component. PRIME indicates the prime data area. OVFLOW indicates the overflow
area.
Can be used to specify work datasets. In MVS, placing two ampersands (&&) before a dataset
name indicates a temporary dataset. In BIM-EPIC, two ampersands (&&) indicate CPU and
partition independence. A single ampersand (&) indicates CPU independence only. The
dataset name can be up to 44 characters.
CPU and partition independence can also be indicated with equal signs (=) or dollar signs ($),
as with TLBL and DLBL statements (see "CPU and Partition Independence" and "Common
Work Datasets"). Please note, however, that equal signs and dollar signs are not supported by
MVS. The MULTCPU configuration option affects CPU independence.
(area)
&&dsname,
&dsname
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