Memorex LOCK - VERSION 2-24 Technické informace stáhnout pdf (Strana 227)

100

101

Parameters for Tape and Disk Datasets

User Reference

Use Pursuant to Company Instructions

6-11

DSN Use the DSN parameter to specify the name or version of

the dataset(s) you want to process. For input datasets, if

you do not specify a particular version, all versions are

read. This process is known as automatic concatenation.

DSN is required for all tape datasets and disk datasets.

The DSN parameter can specify CPU and partition

independence or common work datasets. This is a

BIM-EPIC extension not available with MVS.

FREE Use the FREE parameter to specify how to handle tape

drive assignments when the dataset is closed. When doing

multi-dataset processing, use FREE to hold the

assignment until all datasets have been processed. FREE

is valid for tape datasets only.

LABEL Use the LABEL parameter to determine how long to

retain output datasets. The LABEL parameter is normally

used for uncataloged datasets, but can be used for a

cataloged dataset when you want to override the

catalog-specified retention.

OPTION Use the OPTION parameter to specify options available

in VSE and BIM-EPIC which have no equivalents in

MVS. OPTION is a BIM-EPIC extension.

SPACE Use the SPACE parameter to specify disk space

requirements for output datasets. SPACE specifies how

much space to use and how to process the allocated space

after the dataset is closed.

SPACE is optional for cataloged datasets. You can use

the parameter to specify an allocation size that is different

from the size in the DSN Catalog or to inhibit truncation

for a version.

SPACE is required for Start Track 1 and uncontrolled

datasets.

UNIT Use the UNIT parameter to specify the type of device to

use for an output dataset and for an uncontrolled input

dataset. Device types include, but are not limited to, tape

or disk, 3380 or 3390.

VOL Use the VOLUME (VOL) parameter to specify which

tape volume, disk volume, or disk pool to allocate for an

output dataset or for an uncontrolled input dataset. For

tape datasets, you can use VOL to specify rewind options

for multi-dataset processing. VOL is not normally used

for controlled datasets.

Parameter Description

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