Discontinuance of support

Support is discontinued for various utilities, macros, resource adapters, and functions.

Extended Recovery Facility (XRF)

As of IMS 15.2, Extended Recovery Facility (XRF) is no longer supported.

For IMS 15.2 or later, the HSBID and HSBMBR parameters will not take effect if they are specified as startup parameters in the IMS execution JCL or specified in the DFSPBxxx member of the IMS PROCLIB data set. The DFSHSBxx member of the IMS PROCLIB data set is not used by IMS 15.2 or later systems.

If you are migrating an IMS 15.1 or earlier system to IMS 15.3 and the system you are migrating was part of an XRF complex, the XRF capability will be deactivated after the system is migrated to 15.3.

The following XRF-related commands are no longer accepted by IMS 15.2 or later systems:
/ERE BACKUP
To manually restart the IMS alternate system in an XRF complex. If you use the /ERESTART BACKUP command after migration to restart the IMS system that was the alternate system in the XRF complex, message DFS110I COMMAND KEYWORD BACKUP INVALID FOR ACTIVE is issued.
/DISPLAY HSB
To display the system-related information in an Extended Recovery Facility (XRF) environment. If you use the /DISPLAY HSB command after migration, message DFS3813 is issued.
/SWITCH
To switch active data sets or to change between the active and alternate systems. If you use the /SWITCH command after migration, message DFS3813 or DFS110I, or both, are issued.
/START SURV
To start the operation of the IMS surveillance function in an XRF environment. If you use the /START SURV command after migration, message DFS3805 is issued.
/STOP SURV
To stop the operation of the IMS surveillance function in an XRF environment. If you use the /STOP SURV command after migration, message DFS3805 is issued.

LGEN system definition

As of July 1, 2017, support for LGEN system definition is discontinued in all versions of IMS. If the LGEN parameter is specified on the SYSTEM= parameter in the IMSCTRL macro, remove the LGEN parameter specification to use the standard IMS system definition.

Remote Site Recovery (RSR)

The RSRMBR= control region startup parameter is no longer valid and is ignored. You can remove it from your IMS JCL, and can also delete any DFSRSRxx members from your IMS PROCLIB data set.

Updates to IMS PDFs in the IBM Publications Center

The IBM® Publications Center is discontinued.

To download IMS PDFs, see PDF files of IMS documentation.

IMS Enterprise Suite Version 2.1

IMS Enterprise SuiteVersion 2.1 is the last release of IMS Enterprise Suite that includes the DLIModel utility plug-in. Customers using the IMS Enterprise Suite DLIModel utility plug-in should migrate to using the IMS Enterprise Suite Explorer for Development instead. Although IMS Explorer for Development includes enhancements to most IMS Enterprise SuiteDLIModel utility plug-in functions, it does not provide support for IMS database web services or IMS XML DB. You can obtain this support through the following options:
  • For IMS database web services, you can generate web-enabled IMS database queries by shell sharing IMS Explorer for Development with IBMData Studio.
  • The XML data support in IMS databases is discontinued in IMS 14. For earlier versions of IMS, the support is discontinued when IMS Version 12 is out of service.

MFS SOA support

Users should migrate to IBM Rational® Host On Demand.