Abstract: In a managing system of a mobile agent system, the mobile agent system comprises a plurality of agent systems for generating an agent, executing the agent and performing a movement processing of the agent, at least one agent holding server having an agent holding table, and a network connected thereto, and each of the plurality of agent systems has agent managing section to transfer the agent to the agent holding table of the agent holding server when the mobile agent system does not accept the agent in a case the agent is moved from the agent system under execution to the mobile agent system, and the agent holding server has server managing section to hold the agent in the agent managing table, and to move the agent when the mobile agent system can become accepting it.

Abstract: At the time of a snapshot dump, a main memory storage unit stores only the memory contents of the dirty ones whose contents have changed of the pages in the main memory after the execution of the preceding snapshot dump. Data indicating the storage location of the contents of the pages stored at that time is stored in a storage device in pages in the form of a storage location list. Furthermore, data indicating the storage location of page contents is stored in a storage location list storage area each time a snapshot dump is executed. When the memory contents of a given snapshot dump are restored, the corresponding location list is taken out from the storage location list storage area. According to the storage location list, the corresponding memory contents are restored into the original page location in the main memory.