Patent ID: 6697972
Filing Date: 2004-02-24
Classification: G06F

Abstract:
A fault monitoring method in a computer including a first OS, a second OS, and a multi-OS controller having a communication function between said first OS and said second OS, said fault monitoring method comprising the steps of:monitoring, in an AP fault monitor activated by execution of a program on said first OS, a fault of an application (hereafter referred to as â€œAPâ€ ) activated by execution of a program on said first OS; successively receiving, in a high rank fault monitor activated by execution of a program on said second OS, a monitor alive message indicating an alive state of said AP fault monitor transmitted from said AP fault monitor, by using an inter-OS communication function of said multi-OS controller; successively receiving, in said high rank fault monitor, an OS alive message indicating an alive state of said first OS transmitted from said first OS, by using an inter-OS communication function of said multi-OS controller; and in said high rank fault monitor, restarting said AP fault monitor and recovering said AP when a reception interval of said AP alive message has exceeded a first predetermined time, and restarting said first OS and said AP fault monitor and recovering said AP when a reception interval of said OS alive message has exceeded a second predetermined time.