Abstract: This invention has a remote machine that collects local-machine logs via a network from a plurality of local machines, each of which has memory that stores local-machine logs generated due to its specific generation factor. This remote machine has a CPU that collects local-machine logs stored on the memory of a local machine only when the priority of the local machine is higher than the preset priority.

Abstract: This invention has a remote machine that collects local-machine logs via a network from a plurality of local machines, each of which has memory that stores local-machine logs generated due to its specific generation factor. This remote machine has a CPU that collects local-machine logs stored on the memory of a local machine only when the priority of the local machine is higher than the preset priority.

Abstract: A CPU in a computer includes a control information management table for storing information about whether an error has occurred in a control unit in the computer or in a control unit in a communications card. When an error occurs in any of the control units, the occurrence of the error is recorded in the control information management table, and an error message is transmitted by the monitor to an operator. When a dump collection command is issued by the operator in response to the error message, the monitor specifies the CPU in the computer or the communications card which operates the control unit where the error has occurred, by referring to the control information management table, and collects only the dump information corresponding to the control unit.