Can JCL libraries be concatenated in CA 7?

Products

• CA 7 Workload Automation

Issue/Introduction

How to add an alternative JCL library to be searched prior to the job's default JCL library?

Resolution

You can have an override library defined in CA 7 which can be used for one-time changes to JCL.

You can also define a JCL library to be searched prior to a job's default JCL library much like concatenating the JCL files. JCL libraries are defined with JCL statements in the Initialization File (the UCC7IN DD in the CA 7 procedure names this file). You can use the ALT= keyword on a JCL statement to specify the INDEX value from a previously defined JCL library that will be searched prior to this one. For example:

JCL,DSN=MY.JCL.LIBRARY,INDEX=2
JCL,DNS=MY.OTHER.JCL.LIBRARY,INDEX=1,ALT=2

The CA 7 CPU JOB DEFINITION (DB.1) screen has the ID field under JCL. This field associates the INDEX value on a JCL statement with where the job's JCL resides.

In the above example, if the DB.1 screen for a job has ID: 002, when the job comes into the request queue, library MY.OTHER.JCL.LIBRARY is searched first to see if the member exists.  If so, it is used, otherwise, the default MY.JCL.LIBRARY is used.