WARNING! Stopping CA MIM with the CA MIM SHUTDOWN LOCAL/FREE/RESERVE/DUMP (or z/OS STOP) command when GDIF is running may create data integrity exposures if the system on which CA MIM is stopped will generate new RESERVE or ENQ requests.
We strongly recommend that you stop CA MIM on all systems, rather than a subset of systems in your complex, when GDIF is running. When CA MIM is stopped on one system, any new RESERVE and ENQ requests on that system will not be serialized with the rest of the systems in the complex where CA MIM is still running. No new RESERVE requests are converted. No new ENQ requests are propagated. Therefore, there may be data integrity exposures. It is safe to stop CA MIM on only one system if that system will not be generating any new RESERVE or ENQ requests.
Resources held by the local system at the time CA MIM is stopped locally are not available for use by systems in the rest of the complex where CA MIM is still running until CA MIM is restarted on the local system, or the local system is freed through the CA MIM FREE command. A system can be automatically freed at time of shutdown by issuing the CA MIM SHUTDOWN FREE command.
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