Memorex LOCK - VERSION 2-24 Especificaciones Pagina 250

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CPU and Partition Independence Types of Datasets
7-30 User Reference
CPU and Partition Independence
CPU and partition independence are normally used with work datasets. They allow you to use
a single set of JCL to run in any partition or CPU. Because BIM-EPIC inserts a partition
and/or CPU ID into the dataset name to make the dataset name unique, there will be no
duplication of the dataset names in different partitions or machines.
For example, in your JCL you could specify ===.SORTWRK1 as the dataset name. The three
equal signs designate both CPU and partition independence. When you run the job in the BG
partition of CPU ID 1, BIM-EPIC uses the dataset name 'BG1.SORTWRK1'. When you run
it in the F1 partition of CPU ID 2, BIM-EPIC uses the name 'F12.SORTWRK1'.
Catalog a separate dataset definition for each partition/CPU ID combination you intend to use.
Specify the partition/CPU ID first, then a period, and then the dataset name. For the example
above, you would create a definition for BG1.SORTWRK1 and F12.SORTWRK1. When
using both CPU and partition independence, the partition ID precedes the CPU ID.
Note: If you actually specify === in the dataset name when it is controlled, the === is
replaced by the partition and CPU ID in which the catalog operation occurs.
1. For both DLBL and DD statements, prefix your dataset name with equal signs (=) and a
period (.), as follows:
Format Specifies...
=.dataset.name CPU independence only
==.dataset.name Partition independence only
===.dataset.name Both CPU and partition independence
2. For DD statements, you can substitute two ampersands (&&) for the equal signs and omit
the period. If you are concerned about MVS compatibility, using the ampersands can be an
advantage because they signify a temporary dataset to MVS. Note that MVS requires that
ampersands be specified as the first two characters of the dataset name. See the DSN
parameter for more information.
This dataset will have a unique name in any partition or CPU in which it it used.
// DLBL WORKOUT,'===.WORKFILE.1'
Description
DSN Catalog
JCL Requirements
Example
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