Configuring RMGR in a data-sharing environment

In an IMS data-sharing environment, a single RMGR can serve all of the IMS systems; this ability applies whether the IMS systems are running on one operating system or on different systems in a sysplex environment.

To enable this functionality, you designate a sharegroup name in the RMGR. When you submit function requests through the ISPF interface or the Batch Interface utility, you can specify the sharegroup name or the RMGR name.

Typical data-sharing environment

To establish an RMGR environment for two or more IMS systems that will share a RECON, among other steps you must:

  • Set up a single RMGR and a sharegroup.

  • Create a sharegroup environment record in the RMGR repository.

  • List all of the IMS systems in the IMSID keyword in the RMGR SYSIN data set. If more than one version of IMS is involved in the sharing systems, the IMS ID of the most current IMS system must be first in the list.

To configure RMGR in a data-sharing or sysplex environment

Note

This procedure assumes that a single-RMGR configuration exists for at least one of the IMS systems that belongs to the data-sharing group.

  1. Choose a 4-character sharegroup name.

    This name should be a unique value for RMGR use. The name does not need to match the value of an IMSGROUP keyword. Also, the name must be different from the IMS IDs of the IMS systems in the sharegroup, and from the RMGR name.

  2. Choose an existing RMGR to serve all IMS systems in the sharegroup, and update the JCL to execute the RMGR started task or batch job as follows:
    1. In the SYSIN data set, change the value of the IMSID keyword to list the IMS IDs of all IMS systems that share the same RECON.

      List the system with the latest IMS version first. Use a comma to separate each entry from the next in the list. Enclose the list in parentheses.

    2. In the SYSIN data set, add a SHAREGROUP keyword to specify the sharegroup name that you chose.

      For more information, see Managing the RMGR started task or job.

  3. Modify the startup JCL for each IMS control region as follows:
    1. Add the following DD statement:

      //RMGRSNGL DD DUMMY

    2. Insert the BMC product load library ahead of RESLIB in the STEPLIB concatenation.
    3. If the CPU authorization password for the BMC product is not located in the BMC product load library, insert the library that contains the product authorization password table in the STEPLIB or BMCPSWD DD concatenation.
  4. Stop and restart the RMGR.

    RMGR creates an empty sharegroup environment record.

  5. Update the sharegroup environment record.

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

  6. Stop and restart the IMS systems.

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