Patent ID: 6148305
Filing Date: 2000-11-14
Classification: G06F,Y10S

Abstract:
A data processing method for use with a coupling facility, said method comprising the steps of:keeping a correspondence relationship between each of a plurality of computers and a format of an address expression used to locate data of a file to be accessed by one of said plurality of computers;updating the shared file in response to a request from a first computer selected from said plurality of computers to update a shared file kept in said coupling facility which is connected to said plurality of computers, and holding a format of an address expression for the first computer in accordance with data sent from the first computer;notifying from said coupling facility the update of the shared file to computers using the shared file;comparing, in response to a request from a second computer selected from said plurality of computers notified of the update of the shared file, a format of an address expression for the second computer with a format of an address expression of the shared file kept in said coupling facility in accordance with the correspondence relationship;converting, when the formats are different from each other as a result of said comparing step, the address expression of the shared file into the address expression for the second computer and transmitting the data with the converted address expression to the second computer; andsending, when the formats are equal to each other as a result of the comparison, data of the shared file to the second computer.