안전기억장치를 이용한 주기억장치 상주형 데이터베이스회복 방법
    1.
    发明公开
    안전기억장치를 이용한 주기억장치 상주형 데이터베이스회복 방법 无效
    使用安全存储设备恢复主内部存储器类型数据库的方法

    公开(公告)号:KR1020010055981A

    公开(公告)日:2001-07-04

    申请号:KR1019990057328

    申请日:1999-12-13

    Abstract: PURPOSE: A method for recovering a main internal memory-resident type database using a secure storing device is provided to enhance a system performance by using a secure storing device for updating and backing-up data of a shadow page method, thereby not reflecting a log creation with respect to a change of a database and a log record. CONSTITUTION: After a system is re-booted, it is judged whether a transaction is started(802). If a transaction is not started, all pages of a backup database are loaded in a main internal memory-resident database(804). If a transaction is started, it is judged whether the corresponding page exists in useful page list(806). If the corresponding page does not exist in an available page list, it is judged whether the corresponding page exists in a backup page list(808). If the corresponding page does not exist in a backup page list, the corresponding page of the backup database is loaded in a shadow area of a secure storing device(810). In addition, the corresponding page is registered in the available page list(812). If the corresponding page exists in a backup page list, the corresponding page is registered in the available page list(812). In addition, the corresponding page is registered in the current page table(814). If the corresponding page exists in the available page list, the corresponding page is registered in the current page table. In addition, a working with respect to the current page is performed(816). The processes are repeated from the (806)stage.

    Abstract translation: 目的:提供一种使用安全存储设备恢复主内部存储驻留类型数据库的方法,以通过使用安全存储设备来更新和备份阴影页面方法的数据来增强系统性能,从而不反映日志 关于更改数据库和日志记录的创建。 构成:重新引导系统后,判断事务是否启动(802)。 如果事务未启动,则备份数据库的所有页面将加载到主内部驻留数据库(804)中。 如果事务开始,则判断相应的页面是否存在于有用的页面列表(806)中。 如果相应页面不存在于可用页面列表中,则判断相应的页面是否存在于备份页面列表中(808)。 如果对应的页面不存在于备份页面列表中,则备份数据库的对应页面被加载到安全存储设备的影子区域中(810)。 另外,相应的页面被登记在可用的页面列表(812)中。 如果对应的页面存在于备份页面列表中,则相应的页面被登记在可用的页面列表中(812)。 此外,相应的页面被登记在当前页表(814)中。 如果相应页面存在于可用页面列表中,则相应的页面将被注册到当前页面表中。 另外,对当前页进行工作(816)。 从(806)阶段重复该过程。

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