Accessing the RCDS from more than one system

You must have Global Resource Serialization (GRS) or a similar product installed to access the RCDS from more than one MVS system.

The RCDS must be created and cataloged in a globally shared catalog. All systems in the sysplex need to have write access to all the RCDSs.

CICS® VR issues an ENQ for the QNAME DWWCON and a RNAME of each of the RCDSs. This ENQ is issued with a scope of SYSTEMS when accessing the RCDSs. If you are using GRS for resource serialization, then you do not need to do anything for GRS because this ENQ is propagated to all systems within a GRSplex. If you are using GRS, you must not have an entry for this QNAME in the GRS Exclusion list, Conversion list, or Inclusion list because this might cause serialization problems and possibly damage your RCDSs. If you are using a product other than GRS for resource serialization, you need to ensure that the ENQ's issued by CICS VR are propagated to all systems sharing the RCDS to avoid damaging or corrupting your RCDSs.