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Providing a Response for a Failed Connector z/OS MVS Programming: Sysplex Services Guide SA23-1400-00 |
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The system permits a connector to respond on behalf of a failed
peer connector in two instances:
With the capability to provide a response on behalf of a failed
connector, the previous rebuilding scenario could result as follows:
Note that the connector issuing IXLEERSP with the PROXYRESPONSE=YES keyword is responsible for following any protocols that the application uses during its rebuild cleanup or rebuild stop processing. For example, suppose an application uses two structures — a cache structure and a lock structure. When the rebuild of the lock structure enters the rebuild complete phase, the application updates the cache structure. If a connector fails at this point, and a peer connector decides to respond for the failed connector with the PROXYRESPONSE keyword, that connector has to ensure that the updates to the corresponding cache structure are performed. The updates could be performed immediately by the active connector that issued the PROXYRESPONSE confirmation, or could be done during the processing of the DISCFAILCONN event. |
Copyright IBM Corporation 1990, 2014
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