Backing out runtime definitions imported by the IMPORT command without a cold start of IMS
If you created or updated runtime resources definitions by importing definitions from a resource definition data set (RDDS) or an IMSRSC repository by using the IMPORT DEFN command, you can back out the changes to your online system without a cold start of IMS.
Prerequisite: This option requires
that all the resource and descriptor definitions were exported to
a non-system RDDS before the original IMPORT DEFN command
was issued. It also requires that you saved the output generated from
the IMPORT DEFN command, which shows the resource
and descriptor definitions that were created or updated as a result
of the IMPORT DEFN command.
Procedure
- Issue DELETE commands for any resource and descriptor definitions that were created by the IMPORT DEFN command.
- Issue the IMPORT DEFN command with OPTION(UPDATE) to import the stored definitions, from the non-system RDDS, for any resource and descriptor definitions that were updated by the IMPORT DEFN command.
After the backout is complete, if you are running with system RDDSs defined, issue the EXPORT DEFN TARGET(RDDS) command to export the current definitions to a system RDDS. Or, if you are running with the IMSRSC repository enabled, issue the EXPORT DEFN TARGET(REPO) command or use the automatic export function to export the current definitions to the repository.