DCCTL enhancement to support IMS management of ACBs

IMS management of ACBs was not supported in a DCCTL environment. This enhancement adds support for IMS management of ACBs in a DCCTL environment. Since a DCCTL does not own any database nor service DL/I database calls, the IMS directory that it uses must be maintained by another IMS that supports the TM/DB environment. When the IMS Catalog and directory data set has been created by that other IMS, the DCCTL system can be configured to use the directory data set. The DCCTL system cannot create or maintain any IMS directory data set or the IMS catalog.

Changes to installing and defining IMS

A DCCTL system can participate in a sysplex environment where one ore more IMS have enabled IMS management of ACBs and use the directory data sets that are created and maintained by the non-DCCTL IMS systems. The DCCTL system itself cannot create or maintain any IMS Catalog or directory data set. If ACBMGMT=CATALOG is specified in the DFSDFxxx member of the DCCTL system, the system will enable IMS management of ACBs.

For a DCCTL system, CATALOG=NO must be specified in the CATALOG and CATALOGxxx section of the DFSDFxxx member because a DCCTL system cannot create or maintain the IMS catalog.

Changes to troubleshooting for IMS

For a complete list of all of the new, changed, and deleted messages, and abend codes in IMS 15.5, see Message and code changes in IMS 15.5.

Documentation changes

The following table lists the publications that contain new or changed topics for the New function name enhancement. Publications that are not impacted by this enhancement are not included in the table.