Patent ID: 7472125

Claim:
A data processing system, comprising: a plurality of database servers that are connected with each other via a network; a plurality of data storage areas that store data of the database servers; and a management server that manages a correspondence between the database servers and the data storage areas, wherein: the management server comprises an area allocation management module that allocates the plurality of data storage areas to the plurality of database servers that have access to the data storage areas to be allocated, and notifies the database servers of the data storage areas to be allocated; the database server comprises: an area management module that holds the data storage area allocated to the database server by the area allocation management module; and a data processing module that stores data in the data storage area held by the area management module, refers to and updates the stored data, and, upon the update, stores a log indicating an update history of the data in a log area set respectively for the database servers in advance; and upon receiving a notification of a change of the allocation of the data storage area from the area allocation management module of the management server, the area management module stores an area remapping log indicating the change of the allocation of the data storage area in the log area.