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1. 发明申请

US20070244918A1 Flashback database 有权
标题翻译：闪回数据库
公开(公告)号：US20070244918A1
公开(公告)日：2007-10-18
申请号：US11652782
申请日：2007-01-11
申请人： J. Lee , Juan Loaiza , Michael Stewart , Wei-Ming Hu , William Bridge
发明人： J. Lee , Juan Loaiza , Michael Stewart , Wei-Ming Hu , William Bridge
IPC分类号： G06F17/24
CPC分类号： G06F11/1471 , G06F11/1446 , G06F2201/80 , Y10S707/99931 , Y10S707/99953 , Y10S707/99954
摘要： Techniques are described herein for returning a repository to a prior state. The repository may be, for example a database, and the prior state may be, for example the consistent state that the database had at a particular point in time in the past. When a operator-caused error has been introduced to the database by changes made by an already-committed transaction, the techniques described herein may be used to recover from the error by returning the database to a point in time prior to the commit time of the transaction that introduced the error. The techniques involve the generation of “physical undo” information, and the use of the physical undo information in conjunction with physiological undo and physiological redo to efficiently return a repository to the prior state.
摘要翻译：这里描述了将存储库返回到先前状态的技术。存储库可以是例如数据库，并且先前状态可以是例如数据库在过去的特定时间点具有的一致状态。当通过已经提交的事务所做的改变将由操作者导致的错误引入到数据库时，本文描述的技术可以用于通过将数据库返回到在提交时间之前的时间点从错误中恢复事务引入了错误。这些技术包括生成“物理撤销”信息，以及使用物理撤消信息结合生理撤消和生理重做，以有效地将存储库返回到先前状态。

2. 发明授权

US07181476B2 Flashback database 有权
公开(公告)号：US07181476B2
公开(公告)日：2007-02-20
申请号：US10427511
申请日：2003-04-30
申请人： J. William Lee , Juan Loaiza , Michael J. Stewart , Wei-Ming Hu , William H. Bridge, Jr.
发明人： J. William Lee , Juan Loaiza , Michael J. Stewart , Wei-Ming Hu , William H. Bridge, Jr.
IPC分类号： G06F17/30
CPC分类号： G06F11/1471 , G06F11/1446 , G06F2201/80 , Y10S707/99931 , Y10S707/99953 , Y10S707/99954
摘要： Techniques are described herein for returning a repository to a prior state. The repository may be, for example a database, and the prior state may be, for example the consistent state that the database had at a particular point in time in the past. When a operator-caused error has been introduced to the database by changes made by an already-committed transaction, the techniques described herein may be used to recover from the error by returning the database to a point in time prior to the commit time of the transaction that introduced the error. The techniques involve the generation of “physical undo” information, and the use of the physical undo information in conjunction with physiological undo and physiological redo to efficiently return a repository to the prior state.

3. 发明申请

US20060242513A1 Enhancements to data integrity verification mechanism 有权
公开(公告)号：US20060242513A1
公开(公告)日：2006-10-26
申请号：US11386495
申请日：2006-03-21
申请人： Juan Loaiza , Wei-Ming Hu , Jingling Lee
发明人： Juan Loaiza , Wei-Ming Hu , Jingling Lee
IPC分类号： G01R31/28
CPC分类号： G06F11/1004 , G06F11/0727 , G06F11/0751 , G06F11/1076 , G06F2211/1007 , G11B20/18
摘要： A method and apparatus is provided for maintaining data integrity. According to the method, a physical checksum calculation is performed on a block of data. After performing the physical checksum calculation, a logical check is performed on the data contained with the block of data. If the block of data passes the logical check, then the block of data may be written to nonvolatile memory. Thereafter, when the block of data is read from nonvolatile memory a physical checksum verification procedure is performed on the block of data to determine whether the block of data was corrupted after performing the logical check on the data contained with the block of data.

4. 发明授权

US07631018B2 Flashback database 有权
标题翻译：闪回数据库
公开(公告)号：US07631018B2
公开(公告)日：2009-12-08
申请号：US11652782
申请日：2007-01-11
申请人： J. William Lee , Juan Loaiza , Michael J. Stewart , Wei-Ming Hu , William H. Bridge, Jr.
发明人： J. William Lee , Juan Loaiza , Michael J. Stewart , Wei-Ming Hu , William H. Bridge, Jr.
IPC分类号： G06F17/30 , G06F15/16
CPC分类号： G06F11/1471 , G06F11/1446 , G06F2201/80 , Y10S707/99931 , Y10S707/99953 , Y10S707/99954
摘要： Techniques are described herein for returning a repository to a prior state. The repository may be, for example a database, and the prior state may be, for example the consistent state that the database had at a particular point in time in the past. When a operator-caused error has been introduced to the database by changes made by an already-committed transaction, the techniques described herein may be used to recover from the error by returning the database to a point in time prior to the commit time of the transaction that introduced the error. The techniques involve the generation of “physical undo” information, and the use of the physical undo information in conjunction with physiological undo and physiological redo to efficiently return a repository to the prior state.
摘要翻译：这里描述了将存储库返回到先前状态的技术。存储库可以是例如数据库，并且先前状态可以是例如数据库在过去的特定时间点具有的一致状态。当通过已经提交的事务所做的改变将由操作者导致的错误引入到数据库时，本文描述的技术可以用于通过将数据库返回到在提交时间之前的时间点从错误中恢复事务引入了错误。这些技术包括生成“物理撤销”信息，以及使用物理撤消信息结合生理撤消和生理重做，以有效地将存储库返回到先前状态。

5. 发明申请

US20090106603A1 Data Corruption Diagnostic Engine 有权
标题翻译：数据腐败诊断引擎
公开(公告)号：US20090106603A1
公开(公告)日：2009-04-23
申请号：US12253873
申请日：2008-10-17
申请人： Mark Dilman , Michael James Stewart , Wei-Ming Hu , Balasubrahmanyam Kuchibhotla , Margaret Susairai , Hubert Ken Sun
发明人： Mark Dilman , Michael James Stewart , Wei-Ming Hu , Balasubrahmanyam Kuchibhotla , Margaret Susairai , Hubert Ken Sun
IPC分类号： G06F11/00
CPC分类号： G06F11/0727 , G06F11/0793 , G06F11/1004 , G06F11/1469 , G06F11/1471 , G06F11/327
摘要： A computer is programmed to execute a diagnostic procedure either on a pre-set schedule or asynchronously in response to an event, such as an error message, or a user command. When executed, the diagnostic procedure automatically checks for integrity of one or more portions of data in the computer, to identify any failure(s). In some embodiments, the failure(s) may be displayed to a human, after revalidation to exclude any failure that no longer exists.
摘要翻译：计算机被编程为响应于诸如错误消息或用户命令的事件以预设的时间表或异步地执行诊断过程。当执行时，诊断过程自动检查计算机中一个或多个数据部分的完整性，以识别任何故障。在一些实施例中，在重新验证之后可以向人显示故障以排除不再存在的任何故障。

6. 发明授权

US06173322B2 Network request distribution based on static rules and dynamic performance data 失效
标题翻译：基于静态规则和动态性能数据的网络请求分发
公开(公告)号：US06173322B2
公开(公告)日：2001-01-09
申请号：US08866247
申请日：1997-06-05
申请人： Wei-Ming Hu
发明人： Wei-Ming Hu
IPC分类号： G06F1314
CPC分类号： G06F9/505 , G06F11/3442 , H04L67/1002 , H04L67/1008 , H04L67/1012
摘要： A system and method for the distribution of client requests received from a digital computer network provides an intermediary between the client and one or more content servers that actually service the client request. Client requests are distributed amongst groups of content servers according to a one or more static rules. These static rules are applied to determine which group of content servers will service each client request. Content servers may be grouped without regard to hardware configuration and without regard to where the content server resides within the network. Client requests may be distributed amongst the content servers within each group according to a dynamic metric. The dynamic metric includes time-varying measurements of the available processing capacity of each content server within a group. Client requests may then be distributed to those content servers within a group that are best able to handle additional processing burdens. The available processing capacity of each content server is measured without requiring special software to be installed in the content servers, and without unduly increasing network message traffic. Connections may be established with content servers in one of two modes: a proxy mode where the present invention acts on behalf of the client by having the client request serviced, and a redirect mode where the present invention returns to the client whatever information is required to enable the client to establish a direct connection with the content server.
摘要翻译：用于分发从数字计算机网络接收的客户端请求的系统和方法提供了客户端与实际服务于客户端请求的一个或多个内容服务器之间的中介。客户端请求根据一个或多个静态规则分布在内容服务器组之间。应用这些静态规则来确定哪些内容服务器将为每个客户端请求提供服务。可以将内容服务器分组，而不考虑硬件配置，而不考虑内容服务器驻留在网络内的位置。可以根据动态度量在每个组内的内容服务器之间分发客户端请求。动态度量包括对组内每个内容服务器的可用处理能力的时变测量。然后可以将客户端请求分发到最能够处理附加处理负担的组内的那些内容服务器。测量每个内容服务器的可用处理能力，而不需要在内容服务器中安装特殊软件，并且不会不适当地增加网络消息流量。可以以两种模式之一的内容服务器建立连接：代理模式，其中本发明通过使客户端请求得到服务而代表客户端而行动，以及重定向模式，其中本发明向客户端返回任何需要的信息使客户端能够建立与内容服务器的直接连接。

7. 发明授权

US08543862B2 Data corruption diagnostic engine 有权
标题翻译：数据损坏诊断引擎
公开(公告)号：US08543862B2
公开(公告)日：2013-09-24
申请号：US13304563
申请日：2011-11-25
申请人： Mark Dilman , Michael James Stewart , Wei-Ming Hu , Balasubrahmanyam Kuchibhotla , Margaret Susairaj , Hubert Ken Sun
发明人： Mark Dilman , Michael James Stewart , Wei-Ming Hu , Balasubrahmanyam Kuchibhotla , Margaret Susairaj , Hubert Ken Sun
IPC分类号： G06F11/07
CPC分类号： G06F11/0727 , G06F11/0793 , G06F11/1004 , G06F11/1469 , G06F11/1471 , G06F11/327
摘要： A computer is programmed to execute a diagnostic procedure either on a pre-set schedule or asynchronously in response to an event, such as an error message, or a user command. When executed, the diagnostic procedure automatically checks for integrity of one or more portions of data in the computer, to identify any failure(s). In some embodiments, the failure(s) may be displayed to a human, after revalidation to exclude any failure that no longer exists.
摘要翻译：计算机被编程为响应于诸如错误消息或用户命令的事件以预设的时间表或异步地执行诊断过程。当执行时，诊断过程自动检查计算机中一个或多个数据部分的完整性，以识别任何故障。在一些实施例中，在重新验证之后可以向人显示故障以排除不再存在的任何故障。

8. 发明申请

US20120072770A1 Data Corruption Diagnostic Engine 有权
标题翻译：数据腐败诊断引擎
公开(公告)号：US20120072770A1
公开(公告)日：2012-03-22
申请号：US13304563
申请日：2011-11-25
申请人： Mark Dilman , Michael James Stewart , Wei-Ming Hu , Balasubrahmanyam Kuchibhotla , Margaret Susairaj , Hubert Ken Sun
发明人： Mark Dilman , Michael James Stewart , Wei-Ming Hu , Balasubrahmanyam Kuchibhotla , Margaret Susairaj , Hubert Ken Sun
IPC分类号： G06F11/07
CPC分类号： G06F11/0727 , G06F11/0793 , G06F11/1004 , G06F11/1469 , G06F11/1471 , G06F11/327
摘要： A computer is programmed to execute a diagnostic procedure either on a pre-set schedule or asynchronously in response to an event, such as an error message, or a user command. When executed, the diagnostic procedure automatically checks for integrity of one or more portions of data in the computer, to identify any failure(s). In some embodiments, the failure(s) may be displayed to a human, after revalidation to exclude any failure that no longer exists.
摘要翻译：计算机被编程为响应于诸如错误消息或用户命令的事件以预设的时间表或异步地执行诊断过程。当执行时，诊断过程自动检查计算机中一个或多个数据部分的完整性，以识别任何故障。在一些实施例中，在重新验证之后可以向人显示故障以排除不再存在的任何故障。

9. 发明申请

US20090106327A1 Data Recovery Advisor 审中-公开
标题翻译：数据恢复顾问
公开(公告)号：US20090106327A1
公开(公告)日：2009-04-23
申请号：US12253897
申请日：2008-10-17
申请人： Mark Dilman , Michael James Stewart , Wei-Ming Hu , Alok Pareek , Lawrence HinLuen To, JR. , Vinay H. Srihari
发明人： Mark Dilman , Michael James Stewart , Wei-Ming Hu , Alok Pareek , Lawrence HinLuen To, JR. , Vinay H. Srihari
IPC分类号： G06F17/30
CPC分类号： G06F11/0727 , G06F11/0793 , G06F11/1004 , G06F11/1469 , G06F11/1471 , G06F11/327
摘要： A computer is programmed to identify failures and perform recovery of data. Specifically, in several embodiments, the computer is programmed to automatically check integrity of data in a storage structure to identify a set of failures related to the storage structure. The computer is further programmed in some embodiments to identify, based on one failure in the set of failures, a group of repairs to fix that one failure. Each repair in the group of repairs is alternative to another repair in the group. The computer is also programmed in some embodiments to execute at least one repair in the group of repairs, so as to generate corrected data to fix the one failure. In certain embodiments, the corrected data is stored in non-volatile storage media of the computer.
摘要翻译：计算机被编程为识别故障并执行数据恢复。具体地，在几个实施例中，计算机被编程为自动检查存储结构中的数据的完整性以识别与存储结构相关的一组故障。在一些实施例中，计算机被进一步编程，以基于该组故障中的一个故障来识别修复该一个故障的一组修复。维修组中的每个维修都是组中另一个维修的替代方案。在一些实施例中，计算机也被编程为在维修组中执行至少一个修复，以便产生校正数据以修复一个故障。在某些实施例中，校正的数据被存储在计算机的非易失性存储介质中。

10. 发明授权

US07231564B2 Data block location verification 有权
标题翻译：数据块位置验证
公开(公告)号：US07231564B2
公开(公告)日：2007-06-12
申请号：US10824842
申请日：2004-04-14
申请人： Juan R. Loaiza , Wei-Ming Hu , Jingling William Lee
发明人： Juan R. Loaiza , Wei-Ming Hu , Jingling William Lee
IPC分类号： G11C29/00 , G06F11/00
CPC分类号： G06F11/1004 , G06F11/1008 , G06F11/1076 , G11B20/18
摘要： An approach for performing data block location verification includes inserting an address value into a data block that identifies a desired location in nonvolatile memory for storing the data block. Prior to performing an operation that stores the data block to the nonvolatile memory, a determination is made whether the address value in the data block correctly identifies the location in nonvolatile memory into which the operation will store the data block. The operation is performed only if the address value in the data block correctly identifies the location in nonvolatile memory into which the operation will store the data block. After the data block is read from the nonvolatile memory, an additional determination may be made to determine whether the data block was read from the desired location in the nonvolatile memory.
摘要翻译：用于执行数据块位置验证的方法包括将地址值插入到标识用于存储数据块的非易失性存储器中的期望位置的数据块中。在执行将数据块存储到非易失性存储器的操作之前，确定数据块中的地址值是否正确地识别非易失性存储器中的操作将存储数据块的位置。仅当数据块中的地址值正确识别非易失性存储器中的操作将存储数据块的位置时才执行该操作。在从非易失性存储器读取数据块之后，可以进一步确定是否从非易失性存储器中的期望位置读取数据块。

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