PURPOSE: To improve the offering characteristic of service and the real time characteristic of service offering by appropriately controlling the execution order of a resource securing transaction and a resource release transaction.
CONSTITUTION: The total number of resources which can be used is managed apart from a database which manages the use state of the resources. When the total number of the resources which can be used exceeds a setting reference value, it is judged that the use rate of the resource is comparatively low and the resource can highly possibly be secured, and the resource securing transaction 106 is preferentially executed compared to the resource release transaction 107. Thus, the real time characteristic of service offering is improved without deteriorating the offering characteristic of service. When the total number of the resources which can be used does not exceed the setting reference value, it is judged that the use rate of the resource is comparatively high and the resources cannot highly possibly be secured, and the resource release transaction 107 is preferentially executed compared to the resource securing transaction 106. Thus, the deterioration of the service offering characteristic can be prevented.
INOUE USHIO
SATO TETSUJI
