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1. 发明授权

US08103642B2 Adaptive region locking 有权
标题翻译：自适应区域锁定
公开(公告)号：US08103642B2
公开(公告)日：2012-01-24
申请号：US11346822
申请日：2006-02-03
申请人： Eugene Ho , Wilson Wai Shun Chan , Tak Fung Wang , Angelo Pruscino , Tolga Yurek
发明人： Eugene Ho , Wilson Wai Shun Chan , Tak Fung Wang , Angelo Pruscino , Tolga Yurek
IPC分类号： G06F7/00 , G06F17/00 , G06F15/173
CPC分类号： G06F9/526 , G06F2209/522 , G06F2209/523
摘要： A method and apparatus for managing locks in a database system is provided. A master node grants a lock on a first resource and a group of resources that includes the first resource to a first requester node. The requester node receives a mapping corresponding to the group of resources that may indicate that a lock already exists for a second resource in the group. If the requester node desires a lock on a resource located in the group, the requester node grants itself the lock without notifying the master node. A second requester node requests a lock for a particular resource in the group of resources. The first requester node grants the lock on the particular resource and updates the mapping to indicate that a different node holds a lock for the particular resource.
摘要翻译：提供了一种用于管理数据库系统中的锁的方法和装置。主节点向包括第一资源的第一资源和一组资源授予对第一请求者节点的锁定。请求者节点接收对应于可以指示组中的第二资源的锁已经存在的资源组的映射。如果请求者节点希望对位于组中的资源进行锁定，则请求者节点自己给予锁定而不通知主节点。第二个请求者节点向资源组中的特定资源请求锁。第一个请求者节点授予对特定资源的锁定，并更新映射以指示不同的节点持有特定资源的锁。

2. 发明申请

US20080082533A1 Persistent locks/resources for concurrency control 审中-公开
标题翻译：用于并发控制的持久锁/资源
公开(公告)号：US20080082533A1
公开(公告)日：2008-04-03
申请号：US11540038
申请日：2006-09-28
申请人： Tak Fung Wang , Angelo Pruscino , Wilson Wai Shun Chan , Tolga Yurek
发明人： Tak Fung Wang , Angelo Pruscino , Wilson Wai Shun Chan , Tolga Yurek
IPC分类号： G06F17/30
CPC分类号： G06F9/52 , G06F16/2343
摘要： The state of locks maintained in volatile memory by the master for the resources are preserved after termination of the master. The locks are preserved by storing persistent copies of the locks. The persistently stored copies of the locks are accessible to other nodes in a multi-node system of the master. Locks for which persistent copies are stored in this way are referred to as persistent locks. A persistent copy of data is a copy that is stored in a form of memory that is able to store the copy after the volatile memory storing the data is unable to do so.
摘要翻译：由主机为资源维护的锁的状态在主机终止后被保留。通过存储锁的永久副本来保留锁。持久存储的锁的副本可由主机的多节点系统中的其他节点访问。以这种方式存储持久副本的锁称为持久锁。持久的数据副本是以能够存储数据的易失性存储器不能这样做的能够存储副本的存储器形式存储的副本。

3. 发明授权

US07702660B2 I/O free recovery set determination 有权
标题翻译： I / O自由恢复集确定
公开(公告)号：US07702660B2
公开(公告)日：2010-04-20
申请号：US11638058
申请日：2006-12-12
申请人： Wilson Wai Shun Chan , Vinay Srihari , Tak Fung Wang , Tolga Yurek , Angelo Pruscino
发明人： Wilson Wai Shun Chan , Vinay Srihari , Tak Fung Wang , Tolga Yurek , Angelo Pruscino
IPC分类号： G06F12/00
CPC分类号： G06F11/1471 , G06F11/2023 , G06F11/2035 , G06F11/2097 , G06F2201/80 , Y10S707/99953
摘要： In a multi-node database system, a list of data blocks to perform recovery operations on in the event of failure of a given node is dynamically maintained on another node. List is available when the given node fails, and allows the database to be made available more quickly.
摘要翻译：在多节点数据库系统中，在给定节点发生故障的情况下执行恢复操作的数据块的列表在另一个节点上动态地维护。列表在给定节点失败时可用，并允许数据库更快地提供。

4. 发明申请

US20080140733A1 I/O free recovery set determination 有权
标题翻译： I / O自由恢复集确定
公开(公告)号：US20080140733A1
公开(公告)日：2008-06-12
申请号：US11638058
申请日：2006-12-12
申请人： Wilson Wai Shun Chan , Vinay Srihari , Tak Fung Wang , Tolga Yurek , Angelo Pruscino
发明人： Wilson Wai Shun Chan , Vinay Srihari , Tak Fung Wang , Tolga Yurek , Angelo Pruscino
IPC分类号： G06F17/30
CPC分类号： G06F11/1471 , G06F11/2023 , G06F11/2035 , G06F11/2097 , G06F2201/80 , Y10S707/99953
摘要： In a multi-node database system, a list of data blocks to perform recovery operations on in the event of failure of a given node is dynamically maintained on another node. List is available when the given node fails, and allows the database to be made available more quickly.
摘要翻译：在多节点数据库系统中，在给定节点发生故障的情况下执行恢复操作的数据块的列表在另一个节点上动态地维护。列表在给定节点失败时可用，并允许数据库更快地提供。

5. 发明授权

US07315910B2 Techniques for handling lock-related inconsistencies 有权
标题翻译：处理锁相关不一致的技巧
公开(公告)号：US07315910B2
公开(公告)日：2008-01-01
申请号：US11156318
申请日：2005-06-16
申请人： Wilson Wai Shun Chan , Angelo Pruscino , Stefan Roesch , Michael Zoll , Tolga Yurek , Eugene Ho
发明人： Wilson Wai Shun Chan , Angelo Pruscino , Stefan Roesch , Michael Zoll , Tolga Yurek , Eugene Ho
IPC分类号： G06F12/14 , G06F7/00 , G06F11/00 , G06F9/46
CPC分类号： G06F9/526 , G06F2209/522 , Y10S707/99938
摘要： Techniques are described herein for handling lock-related inconsistencies. As mentioned above, such inconsistencies occur when two or more sets of lock information, relating to the same resource, convey inconsistent information about locks requested and/or granted on that resource. In general, the techniques involve causing the locally-stored lock information about a resource to be sent to the master node of the resource. The master node of the resource compares the lock information thus received against the lock information maintained by the master node. Based on the comparison, the master node determines how to resolve the lock-related inconsistency, and sends messages to those nodes that need to change their local lock information for the resource. Once all of the lock information has been made consistent, the resource made available for access.
摘要翻译：本文描述了处理与锁相关的不一致性的技术。如上所述，当与相同资源相关的两组或多组锁定信息传达关于在该资源上请求和/或授予的锁定的不一致的信息时，会发生这种不一致。一般来说，这些技术涉及将关于资源的本地存储的锁定信息发送到资源的主节点。资源的主节点将由此接收的锁定信息与由主节点维护的锁定信息进行比较。基于比较，主节点确定如何解决与锁相关的不一致，并向需要更改其资源的本地锁信息的那些节点发送消息。一旦所有的锁信息一致，该资源就可用于访问。

6. 发明授权

US07454422B2 Optimization for transaction failover in a multi-node system environment where objects' mastership is based on access patterns 有权
标题翻译：在多节点系统环境中优化事务故障切换，其中对象的主管基于访问模式
公开(公告)号：US07454422B2
公开(公告)日：2008-11-18
申请号：US11282327
申请日：2005-11-18
申请人： Wilson Wai Shun Chan , Angelo Pruscino , Stefan Roesch , Michael Zoll , Tolga Yurek
发明人： Wilson Wai Shun Chan , Angelo Pruscino , Stefan Roesch , Michael Zoll , Tolga Yurek
IPC分类号： G06F17/30 , G06F7/00
CPC分类号： G06F11/2046 , G06F11/203 , G06F11/2033 , G06F11/2035 , G06F11/30 , G06F2201/825 , Y10S707/99939 , Y10S707/99942 , Y10S707/99953
摘要： Techniques are provided for responding to the termination of a node executing one or more transactions by selecting another node to complete the transactions, and assigning to the selected node the affinity relationships that existed between the terminated node and the objects being accessed by said transactions.
摘要翻译：提供了通过选择另一个节点来完成事务来响应执行一个或多个事务的节点的终止的技术，并且向所选择的节点分配存在于被终止的节点和被所述事务访问的对象之间的亲和关系。

7. 发明授权

US07814065B2 Affinity-based recovery/failover in a cluster environment 有权
标题翻译：集群环境中基于关联度的恢复/故障转移
公开(公告)号：US07814065B2
公开(公告)日：2010-10-12
申请号：US11205529
申请日：2005-08-16
申请人： Wilson Wai Shun Chan , Angelo Pruscino , Stefan Roesch , Michael Zoll , Tolga Yurek
发明人： Wilson Wai Shun Chan , Angelo Pruscino , Stefan Roesch , Michael Zoll , Tolga Yurek
IPC分类号： G06F17/30
CPC分类号： G06F11/2046 , G06F11/203 , G06F11/2033 , G06F11/2035 , G06F11/30 , G06F2201/825 , Y10S707/99939 , Y10S707/99942 , Y10S707/99953
摘要： Techniques are provided for responding to the termination of a node by selecting another node, and assigning to the selected node the affinity relationships that existed between the terminated node and one or more objects. The resources that belong to the objects involved in the affinity relationships are remastered to the selected node. The selected node then performs recovery of the resources that had been opened by the terminated node and/or serves as a failover node to execute the transactions that had been executing on the terminated node.
摘要翻译：提供了通过选择另一个节点来响应终止节点的技术，并且向所选节点分配存在于终止的节点与一个或多个对象之间的亲和度关系。属于与亲和力关系相关的对象的资源将重新分配给所选节点。所选择的节点然后执行已被终止的节点打开的资源的恢复和/或用作故障切换节点来执行在终止的节点上执行的事务。

8. 发明申请

US20100211959A1 ADAPTIVE CLUSTER TIMER MANAGER 有权
标题翻译：自适应集群定时器管理器
公开(公告)号：US20100211959A1
公开(公告)日：2010-08-19
申请号：US12371534
申请日：2009-02-13
申请人： Wilson Chan , Deepti Srivastava , Tolga Yurek , Yu Kin Ho , John Hsu , Tak Fung Wang , Angelo Pruscino
发明人： Wilson Chan , Deepti Srivastava , Tolga Yurek , Yu Kin Ho , John Hsu , Tak Fung Wang , Angelo Pruscino
IPC分类号： G06F9/46
CPC分类号： G06F11/0709 , G06F11/0757
摘要： Described herein are techniques for adaptively managing timers that are used in various layers of a node. In many cases, the number of timers that occur in the system is reduced by proactively and reactively adjusting values of the timers based on conditions affecting the system, thereby making such a system to perform significantly better and more resiliently than otherwise.
摘要翻译：这里描述了用于自适应地管理在节点的各个层中使用的定时器的技术。在许多情况下，系统中发生定时器的次数通过主动地和根据影响系统的条件来反应性地调整定时器的值来减少，从而使这样一个系统比其他系统执行得更好，更有弹性。

9. 发明授权

US08220001B2 Adaptive cluster timer manager 有权
标题翻译：自适应集群定时器管理器
公开(公告)号：US08220001B2
公开(公告)日：2012-07-10
申请号：US12371534
申请日：2009-02-13
申请人： Wilson Chan , Deepti Srivastava , Tolga Yurek , Yu Kin Ho , John Hsu , Tak Fung Wang , Angelo Pruscino
发明人： Wilson Chan , Deepti Srivastava , Tolga Yurek , Yu Kin Ho , John Hsu , Tak Fung Wang , Angelo Pruscino
IPC分类号： G06F9/455 , G06F9/46
CPC分类号： G06F11/0709 , G06F11/0757
摘要： Described herein are techniques for adaptively managing timers that are used in various layers of a node. In many cases, the number of timers that occur in the system is reduced by proactively and reactively adjusting values of the timers based on conditions affecting the system, thereby making such a system to perform significantly better and more resiliently than otherwise.
摘要翻译：这里描述了用于自适应地管理在节点的各个层中使用的定时器的技术。在许多情况下，系统中发生定时器的次数通过主动地和根据影响系统的条件来反应性地调整定时器的值来减少，从而使这样一个系统比其他系统执行得更好，更有弹性。

10. 发明申请

US20110067008A1 TECHNIQUES FOR ADAPTIVE TRACE LOGGING 有权
标题翻译：自适应追踪记录技术
公开(公告)号：US20110067008A1
公开(公告)日：2011-03-17
申请号：US12559338
申请日：2009-09-14
申请人： Deepti Srivastava , Wilson Chan , John Hsu , Eugene Ho , Tolga Yurek , Beverly Zane , Angelo Pruscino
发明人： Deepti Srivastava , Wilson Chan , John Hsu , Eugene Ho , Tolga Yurek , Beverly Zane , Angelo Pruscino
IPC分类号： G06F9/44
CPC分类号： G06F11/3636 , G06F11/3466 , G06F2201/865
摘要： Techniques for adaptive trace logging include, in one embodiment, obtaining input data on trace logging behavior and computing resources used by trace logging. Based on the obtained input data, an adaptive trace logging module automatically takes action at runtime to reduce the amount of computing resources consumed by tracing logging. For example, the action taken may include decreasing a trace logging level of an executing software program to reduce the number of trace logging messages added to a trace log. In another embodiment, the techniques include detecting a condition of an executing software program that warrants a change to a trace logging level of the executing program. The adaptive trace logging module automatically changes the trace logging level of the executing program as-needed for the detected condition. For example, the adaptive trace logging module may increase the trace logging level of an executing program upon detecting a deadlock or other abnormal condition of the executing program. By automatically increasing the trace logging level upon detecting an abnormal condition, additional trace logging messages may be written to a trace log aiding diagnosis and troubleshooting of the condition.
摘要翻译：在一个实施例中，用于自适应跟踪记录的技术包括获取跟踪记录行为和跟踪记录使用的计算资源的输入数据。基于获得的输入数据，自适应跟踪记录模块在运行时自动执行操作，以减少跟踪记录所消耗的计算资源量。例如，采取的措施可能包括减少执行软件程序的跟踪日志记录级别，以减少添加到跟踪日志中的跟踪日志记录消息的数量。在另一个实施例中，这些技术包括检测执行软件程序的条件，该程序保证对执行程序的跟踪记录级别的改变。自适应跟踪记录模块根据检测到的条件自动更改执行程序的跟踪记录级别。例如，自适应跟踪记录模块可以在检测到执行程序的死锁或其他异常状况时增加执行程序的跟踪记录级别。通过在检测到异常情况后自动增加跟踪日志记录级别，可能会向跟踪记录中写入附加的跟踪记录消息，以帮助诊断和排除故障。

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