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公开(公告)号：US09268659B2
公开(公告)日：2016-02-23
申请号：US11326035
申请日：2006-01-05
申请人： Aditya Kapoor , Wenlu Ma , Craig G. Duncan
发明人： Aditya Kapoor , Wenlu Ma , Craig G. Duncan
CPC分类号： G06F11/2094 , G06F11/1458 , G06F17/30306
摘要： In one example, a method for detecting failover in a database mirroring system that begins when a determination is made as to the time of the most recent backup of the principal database. Next, the time of the most recent backup of the mirror database is determined. Then, the time of the most recent backup of the principal database is compared to the time of the most recent backup of the mirror database to determine if the principal database was backed up most recently. Finally, if the mirror database is the database that was backed up most recently, it is established that failover has occurred.
摘要翻译： 在一个示例中，一种用于检测数据库镜像系统中的故障切换的方法，该方法在对主体数据库的最新备份的时间进行确定时开始。 接下来，确定镜像数据库的最新备份的时间。 然后，将主体数据库的最新备份时间与镜像数据库的最新备份时间进行比较，以确定最近是否备份了主体数据库。 最后，如果镜像数据库是最近备份的数据库，则建立了故障转移已发生。
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公开(公告)号：US07822717B2
公开(公告)日：2010-10-26
申请号：US11348982
申请日：2006-02-07
申请人： Aditya Kapoor , Wenlu Ma , Craig G. Duncan
发明人： Aditya Kapoor , Wenlu Ma , Craig G. Duncan
CPC分类号： G06F11/1471 , G06F11/1469 , G06F2201/80
摘要： This disclosure concerns systems and methods for restoring data. In one example, a method for restoring a database to a particular state begins when a query is sent to a backup server requesting a list of all backup versions for the database. Next, the list of all backup versions is received from the backup server. Then, the time t0 at which the most recent backup version in the list was created is determined. Next, a point in time t2 subsequent to time t0 is identified. Finally, a command set that, when executed, functions to restore the database to the state that existed at time t2 is automatically formulated.
摘要翻译： 本公开涉及恢复数据的系统和方法。 在一个示例中，将数据库恢复到特定状态的方法开始于将查询发送到请求数据库的所有备份版本列表的备份服务器。 接下来，从备份服务器接收到所有备份版本的列表。 然后，确定创建列表中最新备份版本的时间t0。 接下来，识别在时间t0之后的时间点t2。 最后，一个命令设置，当被执行时，将将数据库恢复到在时刻t2存在的状态的功能被自动表述。
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