Patent ID: 7107481
Filing Date: 2006-09-12
Classification: G06F

Abstract:
1. A machine takeover method in a server system including a plurality of servers connected to a network node through which communication packets directed to each of the plurality of servers run commonly, the machine takeover method, in which a second server under a stand-by status succeeds to a transaction management operation for transactions directed to a first server when the first server, which performs transaction management using a first queue, falls into a failure state, comprising the steps of: monitoring, by the second server, input packets directed to the first server and output packets from the first server at the network node; en-queuing, by the second server, transactions directed to the first server into a second queue; instructing the first server to cease transaction management for transactions directed to the first server in response to a first machine takeover trigger; and succeeding, by the second server, to the management operations of untreated transactions remaining in the second queue by transferring the untreated transactions to an application server, generating reply packets spoofing an address of the first server as a source address for the reply packets, and outputting the reply packets on said network node.