Invention Grant
US07383293B2 Database backup system using data and user-defined routines replicators for maintaining a copy of database on a secondary server
有权
数据库备份系统使用数据和用户定义的例程复制器来维护辅助服务器上的数据库副本
- Patent Title: Database backup system using data and user-defined routines replicators for maintaining a copy of database on a secondary server
- Patent Title (中): 数据库备份系统使用数据和用户定义的例程复制器来维护辅助服务器上的数据库副本
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Application No.: US11931007Application Date: 2007-10-31
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Publication No.: US07383293B2Publication Date: 2008-06-03
- Inventor: Ajay Kumar Gupta , Karl Ostner
- Applicant: Ajay Kumar Gupta , Karl Ostner
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Rankin, Hill & Clark LLP
- Main IPC: G06F17/30
- IPC: G06F17/30
Abstract:
In a database system having a primary server side (10) and a secondary server side (30), a high availability data replicator (26, 46) transfers log entries from the primary side (10) to the secondary side (30) and replays the transferred log entries to synchronize the secondary side (30) with the primary side (10). R-tree index transfer threads (54, 56) copy user-defined routines, the user defined index, and index databases deployed on the primary server side (10) to the secondary server side (30) and deploy the copied user-defined routines, reconstruct the user-defined index, and copy data pages on the secondary side (30) to make the user-defined index consistent and usable on the secondary side (30).
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