Patent ID: 6658541
Filing Date: 2003-12-02
Classification: G06F,Y10S

Abstract:
A database access method for a computer system comprisinga host computer for executing transaction processing and a storage sub-system, connected to the host computer, having a first storage unit for storing a database to be accessed for the transaction processing and a storage control unit for controlling the access to the first storage unit in accordance with the request from the host computer, the method comprising the steps of:judging whether incomplete processing to read data from the first storage unit is in process upon the occurrence of a data update request for the transaction processing; completing the write processing to the storage sub-system due to the update request by storing data to write by the update request into a second storage unit included in the storage sub-system if incomplete processing to read data is in process; and transferring the data to write, stored in the second storage unit, into the first storage unit after the completion of the write processing and the incomplete processing to read data.