Database system with backup and recovery mechanism

专利名称：Database system with backup and recovery

mechanisms

发明人：Atsuki Ito申请号：US09815055申请日：20010323

公开号：US20010056438A1公开日：20011227

摘要：A database system which quickly creates a snapshot copy of the backup files.The system has a plurality of database storage subsystems which are normally operatingas a mirrored storage system under the control of a mirroring controller. A writesuspending unit temporarily suspends write operations to those storage subsystems,and a device detachment unit detaches at least one of the database storage subsystemsfrom the mirrored storage system. A write restarting unit then allows write operations tothe remaining database storage subsystems. A correction processor makes correctionsto the detached database storage subsystem to resolve any inconsistency in its records,which might have been introduced in relation with such transactions that were in processat the time of the detachment. A data converter converts file location data for thedetached database storage subsystem, so that it will serve as a separate databasevolume.

申请人：ITO ATSUKI

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