Patent ID: 6896179
Filing Date: 2005-05-24
Classification: G07F,H04L

Abstract:
1. A computer system comprising a processing computer for executing a predetermined process in response to an electronic message received from a terminal and for returning an electronic message to a sender of the original electronic message, a message broker for relaying electronic messages being transferred between said terminal and said processing computer, and a surveillance computer connected to said message broker via telecommunication circuit, said computer system further comprising: a transmission means for periodically transmitting dummy electronic messages from said surveillance computer, said dummy electronic messages being transmitted from said surveillance computer to said processing computer via said message broker and then being returned from said processing computer to said surveillance computer via said message broker; a recording means for marking a time information indicating a present time on a dummy electronic message at least one timing of receiving a dummy electronic message and/or transmitting a dummy electronic message and/or executing a process based on a dummy electronic message at least in said message broker and in said processing computer; and an error prediction means for making a storing means of said surveillance computer store time information marked on a dummy electronic message being returned to said surveillance computer from said processing computer via said message broker, and for predicting an error occurrence in said computer system based on a time to be required while a dummy electronic message having been transmitted from said surveillance computer returns to be received by said surveillance computer and a mean value of said required time.