发明申请
- 专利标题: Method and System for High-Availability Database
- 专利标题(中): 高可用性数据库的方法和系统
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申请号: US12255707申请日: 2008-10-22
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公开(公告)号: US20090055444A1公开(公告)日: 2009-02-26
- 发明人: Norihiro Hara , Mitsuo Miyazaki , Nobuo Kawamura , Katsushi Yako , Masataka Kan
- 申请人: Norihiro Hara , Mitsuo Miyazaki , Nobuo Kawamura , Katsushi Yako , Masataka Kan
- 申请人地址: JP Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JP Tokyo
- 优先权: JP2003-115185 20030421; JP2007-275110 20071023
- 主分类号: G06F17/30
- IPC分类号: G06F17/30
摘要:
The present invention provides a system switching function for database management systems which requires no standby resources idling during normal operation. One aspect of the invention is directed to a method for processing databases in a system which includes a plurality of storage areas each storing a database and a plurality of computers each having a database management program running thereon which manages one of the plurality of storage areas. Each storage area is associated with only the computer managing the storage area. The method comprises, when a failure has occurred in one of the plurality of computers as a failed computer, obtaining preset substitution information indicating that the storage area managed by the database management program running on the failed computer is to be managed by the database management program running on another one of the plurality of computers as a substitute computer; and, based on the substitution information, changing association of the storage area with the failed computer to the substitute computer. The storage area is to be managed by the database management program running on the substitute computer.