Abstract for MVS Programming: Sysplex Services Guide

This information supports z/OS® (5694-A01).

Purpose of this information

This information describes the services that MVS™ provides to enable multisystem applications and subsystems to:

Run in a sysplex
Share status information
Send and receive messages using signaling paths
Automatically restart jobs and started tasks if they or the system on which they are running unexpectedly terminate
Share data using the coupling facility
Serialize on resources using the coupling facility

These sysplex services can be used by authorized assembler language programs. In general, an authorized program meets one or more of the following requirements:

Runs in supervisor state
Runs under PSW key 0-7
Resides in an APF-authorized library

Some of the sysplex services, however, are restricted to callers with a PSW key of 0.

Who should use this information

This information is for programmers designing or modifying a multisystem application or subsystem to run in a sysplex and take advantage of the communication, recovery, and data sharing functions available to sysplex members.

Programmers using this information should be extremely knowledgeable about the MVS operating system and assembler language programming.

How this information is organized

This information is divided into the following major topics:

Where to find more information

Where necessary, this information references information in other documents, using shortened versions of the document title. For complete titles and order numbers of the documents for all products that are part of z/OS, see z/OS Information Roadmap.

Short title used in this information	Title	Order number
PR/SM™ Planning Guide	PR/SM Planning Guide	GA22-7236