Data processing: database and file management or data structures – File or database maintenance – Database recovery
Reexamination Certificate
2011-08-02
2011-08-02
Nguyen, Cam-Linh (Department: 2161)
Data processing: database and file management or data structures
File or database maintenance
Database recovery
Reexamination Certificate
active
07991749
ABSTRACT:
A database recovery method including a computer and a storage system, in which: the storage system includes a disk drive for storing data; the disk drive includes a data volume, a snapshot volume, a database log for storing an update log, and an update journal for storing update information of the data volume; a recovery point for indicating an end point of a range to which the update journal is to be applied and a starting point of a range to which the database log is to be applied is recorded to recover the data volume; and when the database is to be recovered, the update journal is applied to the snapshot volume up to the recovery point, the snapshot volume after the update is switched to the data volume, and the database log after the recovery point is applied to the data volume that is set by switching.
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Kawamura Nobuo
Mogi Kazuhiko
Nishikawa Norifumi
Oeda Takashi
Brundidge & Stanger, P.C.
Hitachi , Ltd.
Nguyen Cam-Linh
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