ABCs of z/OS System Programming Volume 13

A major goal of operating systems is to process jobs while making the best use of system resources. Thus, one way of viewing operating systems is as resource managers. Before job processing, operating systems reserve input and output resources for jobs. During job processing, operating systems manage resources such as processors and storage. After job processing, operating systems free all resources used by the completed jobs, making the resources available to other jobs. This process is called resource management.
There is more to the processing of jobs than the managing of resources needed by the jobs. At any instant, a number of jobs can be in various stages of preparation, processing, and post-processing activity. To use resources efficiently, operating systems divide jobs into parts. They distribute the parts of jobs to queues to wait for needed resources. Keeping track of where things are and routing work from queue to queue is called workflow management, and is a major function of any operating system.
JES3 considers job priorities, device and processor alternatives, and installation-specified preferences in preparing jobs for processing job output. Features of the JES3 design include:
Single-system image
Workload balancing
Availability
Control flexibility
Physical planning flexibility
This IBM Redbooks® publication describes a JES3 environment that includes the following:
Job entry subsystem (JES3)
Spool data sets and checkpoint
JES3 job flow and scheduling
JES3 spool data management
JES3 initialization
JES3 input service
Converter/interpreter processing
Main device scheduling (MDS)
JES3 job scheduling - GMS
WLM batch initiator management
JES3 output processing
JES3 and multisystem consoles
MVS System Logger/JES3 DLOG
RJP and NJE
JES3 dynamic support programs
Spool partitioning and spool recovery
JES3 Monitoring Facility (JMF)
This book will help you install, tailor and configure a JES3 system.

Chapter 1. Job entry subsystem (JES3)
Chapter 2. Spool data sets and checkpoint
Chapter 3. JES3 job flow and scheduling
Chapter 4. JES3 spool data management
Chapter 5. JES3 initialization
Chapter 6. JES3 input service
Chapter 7. Converter/interpreter processing
Chapter 8. Main device scheduling (MDS)
Chapter 9. JES3 job scheduling - GMS
Chapter 10. WLM batch initiator management
Chapter 11. JES3 output processing
Chapter 12. JES3 and multisystem consoles
Chapter 13. MVS System Logger/JES3 DLOG
Chapter 14. RJP and NJE
Chapter 15. JES3 dynamic support programs
Chapter 16. Spool partitioning and spool recovery
Chapter 17. JES3 Monitoring Facility (JMF)

• Introduction to the New Mainframe: z/OS Basics, SG24-6366-01
• ABCs of z/OS System Programming Volume 6, SG24-6986-00
• ABCs of z/OS System Programming Volume 8, SG24-6988-00

Publish Date
12 June 2009

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Author(s)

Paul Rogers is a Consulting IT Specialist at the International Technical Support Organization, Poughkeepsie Center. He writes extensively and teaches IBM classes worldwide on various aspects of z/OS, z/OS UNIX, JES3, and Infoprint Server. Before joining the ITSO 20 years ago, Paul worked in the IBM Installation Support Center (ISC) in Greenford, England for eight years providing OS/390 and JES support for IBM EMEA and also in the Washington Systems Center for three years. He has worked for IBM for 40 1/2 years.

• Paul Rogers

Juha Vainikainen is a Senior I/T Specialist in IBM Finland. He has extensive knowledge of all aspects of OS/390 and z/OS and all related subsystems. He has worked with Infoprint Server extensively since OS/390 Release 5. Juha is now retired from IBM and was temporarily rehired to work on this book.

• Juha Vainikainen

ISBN

0738433039

IBM Form Number
SG24-7717-00

Number of pages
874