Creating the global resource serialization environment

4 Create the global resource serialization environment.

If you are going to share a tape library among two or more systems in an SMS complex, the global resource serialization environment may be created to include all sharing systems. This allows OAM to serialize the cartridge entry process for more efficient operation. For general information about global resource serialization, see z/OS MVS Planning: Global Resource Serialization.

The global resource serialization configuration is defined in member GRSCNFxx of PARMLIB, which is described in the z/OS MVS Initialization and Tuning Guide. The following resource names are obtained:

                        QNAME-SYSZCBR
                        RNAME-CARTRIDGE_ENTRY_libname

For export processing, the following resource names are used:

                        QNAME-SYSZCBR
                        RNAME-EXPORTED_CATEGORY_libname

For manual tape library processing, the following resource names are used:

                        QNAME-SYSZCBR
                        RNAME-MTL_VOLSER_volsername

For a further discussion of the resource names used by OAM during cartridge entry processing, see Using global resource serialization with cartridge entry processing. For further information regarding resource names used by OAM during VTS export processing, see Using global resource serialization with export processing. For further information regarding resource names used with manual tape library processing, see Using global resource serialization in a manual tape library.

Note: OAM already performs a SYSTEMS level enqueue for global resource serialization; therefore, there is no need to include the QNAME or RNAME in the system inclusion RNL. The QNAME and RNAME are provided for documentation purposes.