Advanced Topics › Resource Serialization

Resource Serialization

You can tell GDIF and ECMF to perform these types of processing for resources:

• Using GDIF, propagate ENQ and RESERVE requests to all systems as global ENQ requests.
• Using ECMF, issue messages about resource conflicts.
• Using GDIF, eliminate hardware reserves by converting them to multisystem requests.
• Using ECMF, resolve certain conflicts automatically.

GDIF and ECMF both use a QNAME list to obtain information on how to manage resources. A QNAME list is a series of QNAME statements that defines classes of resources (by the QNAME, or major name, used on the ENQ or RESERVE request), what type of processing those classes should receive, and whether any of the resources in those classes should be processed differently.

If necessary, you can exercise refined control of GDIF propagation. The propagation can depend upon:

• The resource-name of the request, which is specified in RNAME keywords of CA MII statements
• The identity of the requester, which is specified in JOBNAME keywords of CA MII statements

To exercise refined control, you create an exempt list to specify supplemental instructions.

If you can let all requesters treat the resource in the same way, then you should avoid use of the JOBNAME keyword mentioned above.