| 摘要 |
PROBLEM TO BE SOLVED: To provide an exclusive control system with which a load is distributed and fault resistance is improved. SOLUTION: Concerning this exclusive control system, plural exclusive control servers S1-S4 are provided and among these servers, the server S1 is defined as a preferential exclusive control server concerning the data of the remainder but the other servers S2-S4 have priority concerning the other different data. On the assumption that the request of remainder data operation is inputted from a client C1 to the server S1, this server is set as the preferential exclusive control server so that processing such as remainder updating is performed as it is. On the assumption that the remainder data operation is requested from a client C2 and accepted by the server S4, the request is transferred from the server 84 to the preferential exclusive control server S1. Namely, since only the preferential server processes the relevant request, the confirmation of exclusive control right of confirming whether all the other exclusive control servers have the exclusive control right already or not is not required and the entire exclusive control is not down.
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