Modifying Multiple Systems Coupling resources

After modifying MSC resources, use the /MSVERIFY command to ensure that the assignment produced a valid configuration. The /MSVERIFY command verifies the consistency of MSC system identifications (SYSIDs) and logical link paths (MSNAMEs) across two systems.

All changes made by the online commands remain in effect until the next cold start unless changes are exported to the IMSRSC repository or coded into IMS system generation.

If you use the IMSRSC repository to store dynamically defined MSC resources, ensure that automation and operational procedures that issue commands for MSC resources use type-2 commands, which specify link names, instead of type-1 commands, which specify link numbers. For example, instead of using the /RSTART LINK 10 command to start a link, use the UPDATE MSLINK NAME(logicallinkname) START(COMM) command. During stage-1 system generation, the IMS system assigns numbers to logical links in the order in which the links are generated. However, the numbers for links are not stored in the IMSRSC repository. If logical links are referenced by using link numbers and are automatically imported from the IMSRSC repository, the numbers of the links are likely to change at the next IMS cold start.