Patent ID: 8195704

Claim:
A method comprising: sending an instruction from a validator member processor system of a sysplex to a second member processor system of the sysplex to prevent operations that alter a sysplex namespace; determining whether the validator member processor system of the sysplex is communicative with the second member processor system of the sysplex and whether the member processor systems of the sysplex retain current sysplex status information; sending an instruction from the validator member processor system to the second processor system to send first namespace attribute data associated with the second member processor system to the validator member processor system responsive to determining that the validator member processor system of the sysplex is communicative with the second member processor system of the sysplex and that the member processor systems of the sysplex retain current sysplex status information; determining whether the first namespace attribute data associated with the second member processor system is consistent with second namespace attribute data; sending an instruction to correct the first namespace attribute data responsive to determining that the first namespace attribute data associated with the second member processor system is not consistent with the second namespace attribute data; and determining whether a sysplex member processor system has lost communication with the sysplex; determining whether the validator member processor system of the sysplex is communicative with the second processor system of the sysplex and whether the member processor systems of the sysplex retain current sysplex status information responsive to determining that a sysplex member processor system has lost communication with the sysplex; and resending the instruction from the validator member processor system to the second member processor system to send first namespace attribute data associated with the second member processor system to the validator member processor system responsive to determining that the validator member processor system of the sysplex is not communicative with the second member processor system of the sysplex and that the member processor systems of the sysplex do not retain current sysplex status information.