Understanding RMGR customization and configurations

During the installation of RMGR, the basic components of RMGR (such as the repository, the ISPF interface, and the RMGR started task or job) were prepared for use.

In addition, sample JCL was created for performing various RMGR administrative and user tasks. This general preparation allowed the installer to ensure that RMGR was installed successfully, but it probably did not set up an RMGR configuraiton that completely covers all IMS systems in your environment.

You can set up an RMGR configuration to fit any combination of stand-alone IMS systems, IMS data-sharing systems, and IMS systems in a sysplex environment. You can also change an existing RMGR configuration to accommodate changes in the IMS environment, and you can implement RMGR in new IMS environments as needed. For more information, see RMGR configuration tasks.

An RMGR configuration consists of the following elements:

  • One RMGR must be active (when RMGR functions are executing) for each set of IMS systems that are sharing the same RECON. Keywords in the RMGR started task or job identify the IMS systems for this RMGR to serve and a sharegroup name for data sharing or IMSPLEX environments.

    During installation, JCL is tailored for starting RMGR. For more information, see Managing the RMGR started task or job.

  • A repository must be available for storing RMGR records.

    During installation, a repository is created and populated with default records. For more information, see Maintaining the RMGR repository.

  • An RMGR environment record must exist in the repository for each RMGR that uses the repository. This record contains job statement information that RMGR inserts into created recovery JCL.

    For more information, see Working with RMGR environment records.

  • If the RMGR serves only one IMS, either an IMS environment record or a sharegroup environment record must exist in the repository. In contrast, if the RMGR serves a set of IMS systems that are sharing the same RECON, a sharegroup environment record is required.

    Environment records contain essential information about the IMS or sharegroup environment, such as:

    • Data set names of the cataloged IMS system libraries that provide an application interface to the IMS database

    • Information for accessing the DBRC RECON data sets that contain database recovery control information

    For more information, see Working with IMS/sharegroup environment records.

  • Utility records must exist in the repository. These records contain information about the BMC products or IBM IMS utilities that perform recovery, change accumulation, image copy, pointer checking, and index rebuild functions. During installation, default utility records are created with default names. You can change these default records, or you can use them as models for new records.

    For more information, see Working with utility records.

  • The system-default profile record, which contains processing information that RMGR needs while performing certain recovery management functions, must exist in the repository. During an initial RMGR installation or configuration, the system-default profile (named SYSTEM-DEFAULT-PROFILE) is created with default values. You can update the system-default profile and create additional profiles as needed.

    For more information, see the Backup and Recovery Products for IMS Recovery Manager User Guide.



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