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1. 发明申请

US20090199301A1 METHODS TO DEFEND AGAINST TAMPERING OF AUDIT RECORDS 有权
标题翻译：防止审计记录篡改的方法
公开(公告)号：US20090199301A1
公开(公告)日：2009-08-06
申请号：US12024257
申请日：2008-02-01
申请人： Sashikanth Chandrasekaran , Viresh Garg
发明人： Sashikanth Chandrasekaran , Viresh Garg
IPC分类号： G06F21/24 , G06F17/30
CPC分类号： G06F17/30286 , G06F17/30289 , G06F17/30368
摘要： Embodiments of the invention provide systems and methods for maintaining audit records for a database or other resource. According to one embodiment, a method for maintaining audit records for a database can comprise detecting an operation involving at least one record of the database. An audit record can be generated for the operation and the audit record can be stored in an audit table in the database. Insert operations and select operations for the audit table can be supported but other operations for the audit table can be prohibited. Additionally or alternatively, creation of more than one audit table having a same name and schema can be prevented.
摘要翻译：本发明的实施例提供了用于维护数据库或其他资源的审计记录的系统和方法。根据一个实施例，用于维护数据库的审计记录的方法可以包括检测涉及数据库的至少一个记录的操作。可以为操作生成审核记录，并将审核记录存储在数据库中的审核表中。可以支持插入操作和选择审核表的操作，但可以禁止审核表的其他操作。另外或替代地，可以防止创建具有相同名称和模式的多个审计表。

2. 发明授权

US07983421B2 Methods to defend against tampering of audit records 有权
标题翻译：防止篡改审计记录的方法
公开(公告)号：US07983421B2
公开(公告)日：2011-07-19
申请号：US12024270
申请日：2008-02-01
申请人： Sashikanth Chandrasekaran , Viresh Garg
发明人： Sashikanth Chandrasekaran , Viresh Garg
IPC分类号： H04L9/00
CPC分类号： H04L9/3297 , G06F17/30368 , H04L9/0891 , H04L9/3242 , H04L2209/56 , H04L2209/60
摘要： Embodiments of the invention provide systems and methods for detection of tampering with an audit record for a database. According to one embodiment, a method for detection of tampering with an audit record for a database can comprise reading one or more audit records for a time period from an audit table. The one or more audit records can each include a time stamp and reading the one or more audit records can comprise reading audit records having a timestamp within the time period. An encrypted record, such as a message digest record, for the time period can be generated based on the one or more audit records and including the time stamps. The message digest record can be stored in a message digest table. In some cases, the message digest table can be maintained in a trusted data store.
摘要翻译：本发明的实施例提供用于检测篡改数据库的审计记录的系统和方法。根据一个实施例，用于检测篡改数据库的审计记录的方法可以包括从审计表读取一个或多个审计记录一段时间。一个或多个审计记录可以各自包括时间戳，并且读取一个或多个审计记录可以包括在该时间段内读取具有时间戳的审计记录。可以基于一个或多个审核记录并且包括时间戳来生成针对该时间段的加密记录，例如消息摘要记录。消息摘要记录可以存储在消息摘要表中。在某些情况下，消息摘要表可以维护在可信数据存储中。

3. 发明申请

US20090196423A1 METHODS TO DEFEND AGAINST TAMPERING OF AUDIT RECORDS 有权
标题翻译：防止审计记录篡改的方法
公开(公告)号：US20090196423A1
公开(公告)日：2009-08-06
申请号：US12024270
申请日：2008-02-01
申请人： Sashikanth Chandrasekaran , Viresh Garg
发明人： Sashikanth Chandrasekaran , Viresh Garg
IPC分类号： H04L9/06 , G06F17/30
CPC分类号： H04L9/3297 , G06F17/30368 , H04L9/0891 , H04L9/3242 , H04L2209/56 , H04L2209/60
摘要： Embodiments of the invention provide systems and methods for detection of tampering with an audit record for a database. According to one embodiment, a method for detection of tampering with an audit record for a database can comprise reading one or more audit records for a time period from an audit table. The one or more audit records can each include a time stamp and reading the one or more audit records can comprise reading audit records having a timestamp within the time period. An encrypted record, such as a message digest record, for the time period can be generated based on the one or more audit records and including the time stamps. The message digest record can be stored in a message digest table. In some cases, the message digest table can be maintained in a trusted data store.
摘要翻译：本发明的实施例提供用于检测篡改数据库的审计记录的系统和方法。根据一个实施例，用于检测篡改数据库的审计记录的方法可以包括从审计表读取一个或多个审计记录一段时间。一个或多个审计记录可以各自包括时间戳，并且读取一个或多个审计记录可以包括在该时间段内读取具有时间戳的审计记录。可以基于一个或多个审核记录并且包括时间戳来生成针对该时间段的加密记录，例如消息摘要记录。消息摘要记录可以存储在消息摘要表中。在某些情况下，消息摘要表可以维护在可信数据存储中。

4. 发明授权

US08010494B2 Methods to defend against tampering of audit records 有权
标题翻译：防止篡改审计记录的方法
公开(公告)号：US08010494B2
公开(公告)日：2011-08-30
申请号：US12024257
申请日：2008-02-01
申请人： Sashikanth Chandrasekaran , Viresh Garg
发明人： Sashikanth Chandrasekaran , Viresh Garg
IPC分类号： G06F17/30
CPC分类号： G06F17/30286 , G06F17/30289 , G06F17/30368
摘要： Embodiments of the invention provide systems and methods for maintaining audit records for a database or other resource. According to one embodiment, a method for maintaining audit records for a database can comprise detecting an operation involving at least one record of the database. An audit record can be generated for the operation and the audit record can be stored in an audit table in the database. Insert operations and select operations for the audit table can be supported but other operations for the audit table can be prohibited. Additionally or alternatively, creation of more than one audit table having a same name and schema can be prevented.
摘要翻译：本发明的实施例提供了用于维护数据库或其他资源的审计记录的系统和方法。根据一个实施例，用于维护数据库的审计记录的方法可以包括检测涉及数据库的至少一个记录的操作。可以为操作生成审核记录，并将审核记录存储在数据库中的审核表中。可以支持插入操作和选择审核表的操作，但可以禁止审核表的其他操作。另外或替代地，可以防止创建具有相同名称和模式的多个审计表。

5. 发明授权

US09519589B2 Methods to perform disk writes in a distributed shared disk system needing consistency across failures 有权
标题翻译：在分布式共享磁盘系统中执行磁盘写入的方法需要跨故障的一致性
公开(公告)号：US09519589B2
公开(公告)日：2016-12-13
申请号：US13205443
申请日：2011-08-08
申请人： Sashikanth Chandrasekaran , Roger J. Bamford , William H. Bridge , David Brower , Neil MacNaughton , Wilson Wai Shun Chan , Vinay Srihari
发明人： Sashikanth Chandrasekaran , Roger J. Bamford , William H. Bridge , David Brower , Neil MacNaughton , Wilson Wai Shun Chan , Vinay Srihari
IPC分类号： G06F7/00 , G06F17/00 , G06F12/08 , G06F11/14
CPC分类号： G06F12/0866 , G06F11/1469 , G06F11/1471 , G06F12/0804 , G06F12/0815 , Y10S707/99952 , Y10S707/99953 , Y10S707/99954
摘要： Techniques are provided for managing caches in a system with multiple caches that may contain different copies of the same data item. Specifically, techniques are provided for coordinating the write-to-disk operations performed on such data items to ensure that older versions of the data item are not written over newer versions, and to reduce the amount of processing required to recover after a failure. Various approaches are provided in which a master is used to coordinate with the multiple caches to cause a data item to be written to persistent storage. Techniques are also provided for transferring data items and locks associated with the data items from one node to another.
摘要翻译：提供了用于管理具有多个高速缓存的系统中的高速缓存的技术，其可以包含相同数据项的不同副本。具体地说，提供了用于协调对这些数据项执行的写盘操作的技术，以确保数据项的较早版本不会被写入较新的版本，并且减少在故障之后恢复所需的处理量。提供了各种方法，其中使用主机与多个高速缓存进行协调以使数据项被写入持久存储器。还提供了用于将与数据项相关联的数据项和锁从一个节点传送到另一个节点的技术。

6. 发明授权

US08051046B2 Methods to perform disk writes in a distributed shared disk system needing consistency across failures 有权
标题翻译：在分布式共享磁盘系统中执行磁盘写入的方法需要跨故障的一致性
公开(公告)号：US08051046B2
公开(公告)日：2011-11-01
申请号：US11708721
申请日：2007-02-20
申请人： Sashikanth Chandrasekaran , Roger J. Bamford , William H. Bridge , David Brower , Neil MacNaughton , Wilson Wai Shun Chan , Vinay Srihari
发明人： Sashikanth Chandrasekaran , Roger J. Bamford , William H. Bridge , David Brower , Neil MacNaughton , Wilson Wai Shun Chan , Vinay Srihari
IPC分类号： G06F7/00 , G06F17/00 , G06F17/30 , G06F12/00 , G06F15/16 , G06F13/00 , G06F13/28
CPC分类号： G06F12/0866 , G06F11/1469 , G06F11/1471 , G06F12/0804 , G06F12/0815 , Y10S707/99952 , Y10S707/99953 , Y10S707/99954
摘要： Techniques are provided for managing caches in a system with multiple caches that may contain different copies of the same data item. Specifically, techniques are provided for coordinating the write-to-disk operations performed on such data items to ensure that older versions of the data item are not written over newer versions, and to reduce the amount of processing required to recover after a failure. Various approaches are provided in which a master is used to coordinate with the multiple caches to cause a data item to be written to persistent storage. Techniques are also provided for managing checkpoints associated with the caches, where the checkpoints are used to determine the position at which to begin processing recovery logs in the event of a failure.
摘要翻译：提供了用于管理具有多个高速缓存的系统中的高速缓存的技术，其可以包含相同数据项的不同副本。具体地说，提供了用于协调对这些数据项执行的写盘操作的技术，以确保数据项的较早版本不会被写入较新的版本，并且减少在故障之后恢复所需的处理量。提供了各种方法，其中使用主机与多个高速缓存进行协调以使数据项被写入持久存储器。还提供了用于管理与高速缓存相关联的检查点的技术，其中检查点用于确定在发生故障的情况下开始处理恢复日志的位置。

7. 发明授权

US07493400B2 Creating and dissolving affinity relationships in a cluster 有权
标题翻译：在聚类中创建和解离亲和关系
公开(公告)号：US07493400B2
公开(公告)日：2009-02-17
申请号：US11132811
申请日：2005-05-18
申请人： Juan R. Loaiza , Neil James Scott Macnaughton , Sashikanth Chandrasekaran
发明人： Juan R. Loaiza , Neil James Scott Macnaughton , Sashikanth Chandrasekaran
IPC分类号： G06F15/16 , G06F9/46
CPC分类号： G06F17/30362
摘要： A lock manager system is provided that includes multiple distinct mechanisms for assigning resources to masters. Specifically, the lock manager system includes (1) one or more assignment mechanisms that do not take into account the affinity between nodes and objects (“affinity-independent assignment mechanisms”), and (3) one or more assignment mechanisms that do take into account the affinity between nodes and objects (“affinity-based assignment mechanisms”). At any given time, the assignment of any given resource to a master is governed by only one of the multiple assignment mechanisms employed by the system. Various techniques are described for determining which assignment mechanism to use with which resources.
摘要翻译：提供了一种锁管理系统，其包括用于向主人分配资源的多个不同机制。具体来说，锁管理系统包括（1）一个或多个不考虑节点和对象之间的亲和度的分配机制（“不依赖关系的分配机制”），以及（3）一个或多个分配机制考虑节点和对象之间的亲和性（“基于亲和性的分配机制”）。在任何给定的时间，将任何给定资源分配给主机仅由系统使用的多个分配机制之一来管理。描述了各种技术来确定哪些分配机制与哪些资源一起使用。

8. 发明申请

US20080307267A1 TECHNIQUES FOR AUTOMATIC SOFTWARE ERROR DIAGNOSTICS 有权
标题翻译：自动软件错误诊断技术
公开(公告)号：US20080307267A1
公开(公告)日：2008-12-11
申请号：US12116158
申请日：2008-05-06
申请人： Sashikanth Chandrasekaran
发明人： Sashikanth Chandrasekaran
IPC分类号： G06F11/36
CPC分类号： G06F11/3688
摘要： Techniques are provided for automatically diagnosing errors in a software system. The software system automatically determines whether conditions associated with the software system warrant use of any diagnostic features that are not currently enabled. When the software system determines that the conditions associated with the software system warrant use of any diagnostic features that are not currently enabled, the software system determines which of a plurality of available diagnostic features should be enabled. The software system then enables the determined one or more diagnostics features.
摘要翻译：提供了自动诊断软件系统中的错误的技术。软件系统自动确定与软件系统相关的条件是否需要使用当前未启用的任何诊断功能。当软件系统确定与软件系统相关联的条件保证使用当前未启用的任何诊断功能时，软件系统确定应启用多个可用诊断特征中的哪一个。软件系统然后启用确定的一个或多个诊断特征。

9. 发明授权

US07447786B2 Efficient locking of shared data that is accessed for reads in a cluster database 有权
标题翻译：对集群数据库中的读取进行访问的共享数据的高效锁定
公开(公告)号：US07447786B2
公开(公告)日：2008-11-04
申请号：US11418782
申请日：2006-05-05
申请人： Juan Loaiza , Sashikanth Chandrasekaran , Neil Macnaughton
发明人： Juan Loaiza , Sashikanth Chandrasekaran , Neil Macnaughton
IPC分类号： G06F13/00
CPC分类号： G06F9/526 , G06F15/16 , G06F15/173
摘要： Described herein are techniques for synchronizing access to resources in a multi node system by establishing a resource as a read-mostly resource based on one or more criteria, and allowing a node to acquire a shared lock, not granted by the master, on the read-mostly resource where no anti-lock exists for the resource.
摘要翻译：这里描述的是通过基于一个或多个标准将资源建立为主要读取的资源，并且允许节点获取未被主设备授予的共享锁在读取上来同步对多节点系统中的资源的访问的技术 - 资源无资源的资源。

10. 发明授权

US07277897B2 Dynamic reassignment of data ownership 有权
标题翻译：动态重新分配数据所有权
公开(公告)号：US07277897B2
公开(公告)日：2007-10-02
申请号：US10831401
申请日：2004-04-23
申请人： Roger J. Bamford , Sashikanth Chandrasekaran , Angelo Pruscino
发明人： Roger J. Bamford , Sashikanth Chandrasekaran , Angelo Pruscino
IPC分类号： G06F17/30
CPC分类号： G06F17/30575 , G06F9/5083 , Y10S707/972 , Y10S707/99944
摘要： Various techniques are described for improving the performance of a shared-nothing database system in which at least two of the nodes that are running the shared-nothing database system have shared access to a disk. Specifically, techniques are provided for changing the ownership of data in a shared-nothing database dynamically, based on factors such as which node would be the most efficient owner relative to the performance of a particular operation. Once determined, the ownership of the data may be changed permanently to the new owner, or temporarily for the duration of the particular operation.
摘要翻译：描述了用于改善无共享数据库系统的性能的各种技术，其中运行无共享数据库系统的至少两个节点具有对盘的共享访问。具体地说，提供了基于诸如哪个节点相对于特定操作的性能来说最有效的所有者的因素来动态地改变无共享数据库中的数据的所有权的技术。一旦确定，数据的所有权可以永久地更改为新的所有者，或者在特定操作期间临时更改。

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