ABCs of z/OS System Programming Volume 3 - IBM Redbooks

5.34 Simplifying JCL use
Figure 5-34 Using SMS capabilities to simplify JCL
Use simplified JCL
After you define and start using data classes, several JCL keywords can help you simplify the
task of creating data sets and also make the allocation process more consistent. It is also
possible to allocate VSAM data sets through JCL without IDCAMS assistance.
For example, with the use of data classes, you have less use for the JCL keywords UNIT,
DCB, and AMP. When you start using system-managed data sets, you do not need to use the
JCL VOL keyword.
JCL keywords used in the DFSMS environment
You can use JCL keywords to create VSAM and non-VSAM data sets. For a detailed
description of the keywords and their use, see z/OS MVS JCL User’s Guide, SA22-7598.
In the following sections, we present sample jobs exemplifying the use of JCL keywords
when:
► Creating a sequential data set
► Creating a VSAM cluster
► Specifying a retention period
► Specifying an expiration date
296 ABCs of z/OS System Programming Volume 3
DEFINING A NEW DATA SET
(SMS)
//DD1 DD DSN=PAY.D3,
// DISP=(NEW,CATLG)
STORAGE MANAGEMENT SUBSYSTEM
MVS/ESA