
Using JCL and the DSN Catalog
User Reference
Connectivity Systems, Inc.—Copyright © 2006
Use Pursuant to Company Instructions
7-3
Using JCL and the DSN Catalog
Description For tape output datasets, JCL parameters always override corresponding
DSN Catalog information.
For DASD output datasets, except for “retention period,” the only item in
the catalog entry that can be overridden is the “number of tracks to be
allocated.” This is taken from the // EXTENT following the appropriate //
DLBL statement. That DLBL statement must have the BIM-EPIC option
code “O” specified. See Chapter 5, “
DLBL Options,” for additional
information.
For Tape or DASD output datasets, if a greater than zero retention value
is specified, the value will override the DSN retention value in the
catalog. The BIM-EPIC option code O is not required for this catalog
override.
For input datasets, tape, or DASD, the DSN Catalog values override any
corresponding JCL parameters, except for:
Density (TLBL)
Block size or CISIZE (DLBL or DD DCB parameter)
Retention (days)
Expiration date
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