Migrating an existing IMS catalog in systems that manages ACBs

If you are migrating from IMS 14 with managed ACBs enabled to IMS 15, you can enable IMS 15 to support IMS directory ACBs that are currently being used by an IMS 14 system and load ACBs from the same IMS directory that the IMS 14 system is using. Install APAR PI79314 for IMS 15 to allow an IMS 15 system to support directory ACBs generated from an IMS 14 system. After installing both IMS 14 APAR PI82331 and IMS 15 APAR PI79314, IMS 14 and IMS 15 systems can share the same directory.

Before you begin

ACBSHR=Y must be specified for coexistence between IMS 14 and IMS 15 in a managed ACB environment, even if you are migrating a single IMS 14 system. If the IMS 14 directory was created in an ACBSHR=N environment, you must specify ACBSHR=Y in the IMS 14 system and re-create the IMS directory before the IMS 14 and IMS 15 systems can coexist with managed ACBs enabled.

The migration procedure for the IMS catalog differs depending on whether you are migrating a single IMS system or multiple IMS systems that share a catalog:
  • If you are migrating a single IMS system to IMS 15, the installation of the IMS 14 APAR PI82331 in step 4 is not required.
  • If you are migrating multiple IMS systems, or if you plan to have IMS 14 and IMS 15 systems coexist in a data sharing environment, the installation of the IMS 14 APAR PI82331 in step 4 is required.

If you require an ACBLIB in your IMS 15 managed ACB environment for the use of tools, utilities, batch jobs, or for any other reason, you must regenerate the ACBs in the ACBLIB by using the IMS 15 Catalog Library Builder utility (DFS3LU00).

The following steps show how you can migrate an existing IMS catalog in systems that manages ACBs:

Procedure

  1. If IMS 15 is running, shut it down.
  2. Install the IMS 15 APAR PI79314 on your system to allow to use an IMS directory that contains ACBs generated by an IMS 14 system.
  3. Restart the IMS 15 system with the same catalog and ACB management definitions as your IMS 14 system.
  4. Install the IMS 14 APAR PI82331 on your IMS 14 system to allow IMS 14 to support directory ACBs generated by an IMS 15 system, and to make changes to the IMS directory from IMS 15.
    Optional: If you do not need to use your IMS 15 system to create or modify any ACBs while the IMS directory is shared with an IMS 14 system, APAR PI82331 is not required.