In a data processing system formed of a plurality of nodes each connected to networks, each node operates either as a manager or as an agent. The manager supervises information included in the agents which are managed by the manager itself. A super manager is connected to the network for recognizing the node which operates as the manager which performs double supervision of the information in the agents with the manager. The super manager has a receiving unit for receiving information to be supervised by the node which operates as the manager, a detecting unit for detecting a failure of the node which operates as the manager, and a supervising unit for specifying information to be supervised by the faulty manager in accordance with information received by the receiving unit when the detecting unit detects the failure. The super manager supervises the object information to be supervised instead of the manager when the manager fails.