z/OS MVS Programming: Sysplex Services Guide
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Designing Protocols for Using the Serialized List Structure

z/OS MVS Programming: Sysplex Services Guide
SA23-1400-00

The use of a serialized list structure requires a set of protocols for sharing locks. You should consider issues such as the following when you design your locking protocols:
  • What list structure resource does each lock represent?
  • How will I maintain information about the lock requests so my notify exit can make decisions to resolve lock contention?
  • How will I manage multiple, asynchronous lock requests – both my own and those of other serialized list structure users?
  • How will my notify exit decide how to handle lock contention?
  • How will a lock be released if the owning connection cannot free it?
  • How will my application handle recovery for work that was being performed by a failed connection?

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