Defining the IMS control region
To initialize IMS to function in an IMSplex, you must define the IMS control region to communicate with OM for command processing and RM for resource validation, status updates, and global online change.
Steps in the definition process include:
- Uniquely identifying each IMS system in the IMSplex by using the IMSID= keyword in the system definition macro
- Identifying the IMSplex to each IMS system by using the IMSPLEX= keyword in the DFSCGxxx PROCLIB member data set, or the CSL section of the DFSDFxxx PROCLIB member data set, of each IMS system
The PROCLIB member data sets that must be modified to correctly define the IMS system and the IMSplex include:
- DFSCGxxx
- DFSDFxxx
- DFSPBxxx
- DFSSQxxx
- DFSVSMxx