Backing out MSC DRD command-related changes to your online system

You can back out the changes that were dynamically made to your runtime MSC resources with a cold start of IMS.

Prerequisites: Before you make changes to your system, ensure that all of the following prerequisites are met:
  • The IMSRSC repository is defined.
  • REPOSITORY=(TYPE=IMSRSC) is specified in the REPOSITORY section of the DFSDFxxx proclib member to enable the IMSRSC repository.
  • MSCREPO=Y is specified in the MSC section of the DFSDFxxx member of the IMS PROCLIB data set to enable the IMSRSC repository for MSC resources.
  • AUTOEXPORT=AUTO or AUTOEXPORT=REPO is specified in the DYNAMIC_RESOURCES section of the DFSDFxxx PROCLIB member to enable automatic export to the IMSRSC repository.
  • AUTOIMPORT=AUTO or AUTOIMPORT=REPO is specified in the DYNAMIC_RESOURCES section of the DFSDFxxx PROCLIB member to enable automatic import to the IMSRSC repository.

To back out changes:

Procedure

  1. Export all of the runtime MSC resource definitions to the IMSRSC repository by using the automatic export function. Then, issue CREATE, UPDATE, and DELETE commands to create new resource definitions, update existing resource definitions, and delete existing resource definitions. If resource definitions were exported to the repository and they need to be modified, export the definitions again after a CREATE or UPDATE command is issued in IMS. If you issued DELETE commands in IMS, issue the DELETE DEFN command to delete the resource definition from the repository for the IMS system.
  2. Cold start IMS.
    At cold start, the MSC resources are imported from the IMSRSC repository.