IBM Z Simplification

IBM Z Simplification

IBM Z Simplification

Transforming IBM Z into an simpler, more intuitive platform so every user, from beginners to experts, can learn faster, work confidently, and drive meaningful outcomes.

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Job Processing Deprecations

  • 1.  Job Processing Deprecations

    Posted 5 days ago
    Edited by Sneha Kanaujia Fisher 4 days ago

    Virtual Equals Real (V=R) Jobs

    What is being removed or changed

    z/OS 3.2 is planned to be the last release to support Virtual Equals Real (V=R) jobs.

    Required customer migration or upgrade actions

    Identify V=R jobs and remove ADDRSPC=REAL dependencies.

    Links to the relevant documentation

    z/OS 3.2 Announcement - Statement of Direction AD26-0005

    DFSMSdfp Checkpoint/Restart

    What is being removed or changed

    z/OS 3.2 is planned to be the last release to support DFSMSdfp Checkpoint/Restart. The intent is not to require changes to applications with regards to usage of the CHKPT macro.

    Usage of the CHKPT macro is intended to be syntax checked and ignored. To indicate this behavior, DFSMSdfp will issue the following messages (with return code 1, reason code 0) whenever a program invokes the checkpoint or restart functions:

    IHJ106I JJJ,SSS<.PPP> (DDN,UTN,SER) CHECKPOINT HAS BEEN REQUESTED HOWEVER, IT HAS NO EFFECT BECAUSE CHECKPOINT AND RESTART ARE NOT SUPPORTED IN THIS RELEASE.

    IHJ107I JJJ,SSS<.PPP> (DDN,UTN,SER) RESTART FAILED BECAUSE CHECKPOINT and RESTART ARE NOT SUPPORTED IN THIS RELEASE.

    Any remaining z/OS software that still depends on checkpoint/restart capability might need to be redesigned to remove the dependency on checkpoint/restart. Updates to allow identification of usage of checkpoint/restart are planned to be available with the Generic Tracker Facility.

    z/OS continues to provide job restart processing, which works on a step basis as well as capabilities like Transactional VSAM which may provide the basis for solutions that could replace checkpoint/restart.

    Required customer migration or upgrade actions

    To prepare for this change, plan to update any applications that still depend on the DFSMSdfp checkpoint/restart capability and remove these dependencies.

    Check for programs that use the DFSMSdfp checkpoint/restart facility, for example, by using the Generic Tracking Facility. See APAR OA64519 on z/OS 2.5 and later for the Generic Tracking Facility support.

    Links to the relevant documentation

    z/OS 3.2 Announcement - Statement of Direction AD26-0005



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