
DSN Parameter
6-26 User Reference
Connectivity Systems, Inc.—Copyright © 2006
Use Pursuant to Company Instructions
DSN Parameter
Description Use the DSN parameter to specify the name of the dataset being
processed. The DSN parameter is required for all tape datasets and disk
datasets. It also determines which version or versions of the dataset will
be used for input.
The rules for dataset names with DD statements are slightly different
from the rules for dataset names with standard VSE JCL. Tape dataset
names and disk dataset names can be up to 44 characters. Generation
dataset names are limited to 35 characters. These limitations are set
because EPIC places the generation number into the VSE Format 1 label
in the format of G=nnnnnnnn. The G= information does not appear
when displayed in Online Manager or TSIDMNT reports. If the dataset
name contains embedded blanks, enclose the name in apostrophes.
Note:Note:
Only the first 17 characters of the dataset name are written on a tape
HDR1 label. BIM-EPIC internally manages the remaining characters if
the DSN exceeds 17 characters.
Syntax The following provides an example of a DSN parameter syntax.
DSN=dataset-name [.Gnnnn[Vnnn]|(0)|(-n)|(+n)|(area)]
or
DSN=&[&]dsname
Subparameters The following provides a description of the subparameters you can use
with the DSN parameter.
Definitions The following provides definitions for the subparameters you can use
with the DSN parameter.
Subparameter Required? Valid Default
dataset-name Yes 1 to 44 characters None
.Gnnnn[Vnnn] No Generation number None
n No Zero or signed integer See text
area No INDEX|PRIME|OVFLOW None
Subparameter Definition
dataset-name Specifies the dataset name.
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