Patent ID: 7127635
Filing Date: 2006-10-24
Classification: G06F

Abstract:
1. A method for correcting programs in a computer system connected to a network and having a plurality of logical computers said method comprising the steps of: copying a system disk storing an operating system that is in operation on a first logical computer for processing a service and an application disk storing application programs and data under control of said first logical computer from a first storage means assigned to said first logical computer to a second storage means; starting up the operating system in a second logical computer that has been in standby mode by using said copied system disk; correcting programs stored in said copied system disk and said copied application disk by applying patch files; and switching processing of said service from said first logical computer to said second logical computer that uses said corrected programs by switching a communication path leading external requests for said service via the network from a first path connected to said first logical computer to a second path connected to said second logical computer, wherein, the first logical computer continues to process said service until said switching step is executed.