发明申请
US20090125568A1 DATABASE RECOVERY METHOD APPLYING UPDATE JOURNAL AND DATABASE LOG
有权
数据库恢复方法应用更新日志和数据库日志
- 专利标题: DATABASE RECOVERY METHOD APPLYING UPDATE JOURNAL AND DATABASE LOG
- 专利标题(中): 数据库恢复方法应用更新日志和数据库日志
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申请号: US12329143申请日: 2008-12-05
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公开(公告)号: US20090125568A1公开(公告)日: 2009-05-14
- 发明人: Norifumi Nishikawa , Takashi Oeda , Nobuo Kawamura , Kazuhiko Mogi
- 申请人: Norifumi Nishikawa , Takashi Oeda , Nobuo Kawamura , Kazuhiko Mogi
- 优先权: JP2006-019245 20060127
- 主分类号: G06F17/30
- IPC分类号: G06F17/30 ; G06F12/00 ; G06F12/16
摘要:
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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