发明申请
US20060230013A1 System and method for performing just-in-time priming of a database cache
有权
用于执行数据库高速缓存的即时启动的系统和方法
- 专利标题: System and method for performing just-in-time priming of a database cache
- 专利标题(中): 用于执行数据库高速缓存的即时启动的系统和方法
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申请号: US11303714申请日: 2005-12-16
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公开(公告)号: US20060230013A1公开(公告)日: 2006-10-12
- 发明人: Namik Hrle , James Teng
- 申请人: Namik Hrle , James Teng
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 优先权: EP05102734.0 20050407
- 主分类号: G06F17/30
- IPC分类号: G06F17/30
摘要:
A system for retrieving stored data and/or index pages, receives a database request, generates an access plan for the database request for accessing data rows and/or index entries according to the statement, and generates a priming process by selecting a set of data and/or index pages. The set of data and/or index pages is a super-set or the exact set of the pages needed for accessing data rows and/or index entries according to the access plan. The present system retrieves the data and/or index pages of the set before executing the database request according to the access plan. The execution of the database request is performed by scanning the index and data pages preloaded into the cache. This reduces the number of necessary disk reads during execution.
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