Who this book is for
If you’re a programmer trainee, this book is the fastest and best
way to get started with OS/390 or z/OS JCL. By the time you complete the
first 9 chapters, you’ll have most of the knowledge and skills that you
need to run all types of programs. Then, you can build on those skills whenever
you want to. When you start working with VSAM files, for example, you can
read the three chapters in section 4. And to learn more about using the
procedures for compiling and testing programs, you can read chapter 17.
If you’re an experienced programmer, this is a book you should
have on your desk because it will let you enhance your JCL skills whenever
you need to. If, for example, you have to work with generation data groups,
chapter 12 shows you how. If you want to generate a test file by using the
IEBDG utility, chapter 18 shows you how. And if you’re called upon to work
with UNIX files on your mainframe, chapter 21 shows you how. At some point,
in fact, you should take the time to page through this entire book so you
can get a complete view of the facilities that OS/390 and z/OS offer.
If you’re an operator or an operator trainee, there’s no better
way to get the JCL training you need than by using this book. Of course,
there’s more to being an operator than knowing JCL. But this book will give
you the JCL background that every operator needs, and it will be the first
reference that you turn to when JCL problems arise.
Finally, if you’re a trainer, this book will outperform any JCL
book or course you’ve ever tried. In fact, you can just hand this book out
to your students in any mainframe-related course without changing anything
else, and it will give them the extra system perspective that will improve
their performance on the job. Beyond that, though, we have an Instructor’s
Guide with the training materials that make it easy for you to base
a JCL course on this book and that help you guarantee the course’s effectiveness.