This service is used to perform the following functions: coordinated CKDS change master key, coordinated CKDS refresh, coordinated PKDS change master key, coordinated PKDS refresh, and coordinated TKDS change master key.
While this service is performing a coordinated change master key function, dynamic KDS update services may continue to run in parallel. During a coordinated refresh function, dynamic KDS update services may continue to be enabled; however, they will be temporarily suspended internally until the coordinated refresh completes. If this cannot be tolerated, it is recommended to disable dynamic KDS update services when using this service.
In a sysplex environment, this callable service is executed from a single ICSF instance, and the function is coordinated across all sysplex members sharing the same active KDS. This removes the need for KDS refresh or KDS change master key functions to be performed locally on every ICSF instance sharing the same active KDS in a sysplex environment.