Backing out DRD command-related changes to your online system with a cold start of IMS
You can back out dynamic resource definition (DRD) command-related resource changes to your online system with a cold start of IMS.
Prerequisites: Before
you make changes to your system, use the EXPORT DEFN command
to either export all the resource and descriptor definitions to a
non-system resource definition data set (RDDS) or export the resource
and descriptor definitions that are to be changed or deleted to the IMSRSC repository.
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
by the EXPORT DEFN command or
an automatic export to the repository and they need to be modified,
issue another EXPORT command 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.
To back out changes:
Procedure
- Cold start IMS with no MODBLKS resources defined (by specifying AUTOIMPORT=N in the Dynamic Resources section of the DFSDFxxx IMS PROCLIB member).
- Issue the IMPORT DEFN command to import all of the stored resource and descriptor definitions from the non-system RDDS or all of the resource and descriptor definitions for the IMS system from the repository.