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公开(公告)号：US07441033B2
公开(公告)日：2008-10-21
申请号：US10917687
申请日：2004-08-12
IPC分类号： G06F15/173 , G06F12/00
CPC分类号： H04L67/1031 , G06F9/5061 , H04L41/0668 , H04L41/5009 , H04L41/5025 , H04L67/1034
摘要： An approach efficiently and dynamically allocates and de-allocates database instances and nodes between databases. The approach performs this function in a way that accounts for the users of and services hosted by multiple databases.
摘要翻译： 一种方法可以有效和动态地分配数据库中的数据库实例和节点。 该方法以这样一种方式来执行此功能，从而占用多个数据库托管的用户和服务。
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公开(公告)号：US07930344B2
公开(公告)日：2011-04-19
申请号：US12338651
申请日：2008-12-18
CPC分类号： G06F9/5088
摘要： An approach migrates database sessions from a database server on which performance and resource availability requirements are not being met to another database server. Because workload is removed from the database server not meeting these requirements, improved performance there is promoted. Furthermore, the approach switches the users in a way that attempts to keep performance and resource availability levels at the database server receiving the database sessions within goals for performance and resource availability.
摘要翻译： 一种方法将数据库会话从数据库服务器迁移到哪个性能和资源可用性要求未被满足到另一个数据库服务器。 因为从不符合这些要求的数据库服务器中删除工作负载，因此提升了性能。 此外，该方法以一种尝试在数据库服务器上保持性能和资源可用性级别的方式切换用户，以在性能和资源可用性的目标内接收数据库会话。
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3.发明授权公开(公告)号：US07516221B2
公开(公告)日：2009-04-07
申请号：US10917873
申请日：2004-08-12
申请人： Benny Souder , Debashish Chatterjee , Lakshminarayanan Chidambaran , David Brower , Carol Colrain , Daniel Semler , Christopher A. Kantarjiev , James W. Stamos
发明人： Benny Souder , Debashish Chatterjee , Lakshminarayanan Chidambaran , David Brower , Carol Colrain , Daniel Semler , Christopher A. Kantarjiev , James W. Stamos
IPC分类号： G06F15/173 , G06F12/00
CPC分类号： G06F11/3433 , G06F9/5027 , G06F9/5061 , G06F11/3495 , G06F2201/80 , G06F2201/87 , G06F2209/501 , H04L29/08279 , H04L41/5009 , H04L41/5038
摘要： Approaches are used for efficiently and effectively managing the dynamic allocation of resources of multi-node database systems between services provided by the multi-node database server. A service is a category of work that is hosted on the database server. The approaches manage allocation of resources at different levels. For services that use a particular database, the performance realized by the services is monitored. Resources assigned to the database are allocated between these services to ensure performance goals for each are met. Resources assigned to a cluster of nodes are allocated between the databases to ensure that performance goals for all the services that use the databases are met. Resources assigned to a farm of clusters are assigned amongst clusters based on service level agreements and back-end policies. The approach uses a hierarchy of directors to manage resources at the different levels.
摘要翻译： 方法用于在由多节点数据库服务器提供的服务之间有效和有效地管理多节点数据库系统的资源的动态分配。 服务是托管在数据库服务器上的一类工作。 这些方法管理不同层次的资源分配。 对于使用特定数据库的服务，将监视服务实现的性能。 分配给数据库的资源在这些服务之间分配，以确保满足每个服务的性能目标。 分配给节点集群的资源在数据库之间分配，以确保满足使用数据库的所有服务的性能目标。 根据服务级别协议和后端策略，在集群中分配分配给集群场的资源。 该方法使用董事级别来管理不同级别的资源。
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公开(公告)号：US20090100180A1
公开(公告)日：2009-04-16
申请号：US12338651
申请日：2008-12-18
IPC分类号： G06F15/173
CPC分类号： G06F9/5088
摘要： An approach migrates database sessions from a database server on which performance and resource availability requirements are not being met to another database server. Because workload is removed from the database server not meeting these requirements, improved performance there is promoted. Furthermore, the approach switches the users in a way that attempts to keep performance and resource availability levels at the database server receiving the database sessions within goals for performance and resource availability.
摘要翻译： 一种方法将数据库会话从数据库服务器迁移到哪个性能和资源可用性要求未被满足到另一个数据库服务器。 因为从不符合这些要求的数据库服务器中删除工作负载，因此提升了性能。 此外，该方法以一种尝试在数据库服务器上保持性能和资源可用性级别的方式切换用户，以在性能和资源可用性的目标内接收数据库会话。
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公开(公告)号：US07552171B2
公开(公告)日：2009-06-23
申请号：US10918055
申请日：2004-08-12
CPC分类号： G06F9/5088
摘要： An approach migrates database sessions from a database server on which performance and resource availability requirements are not being met to another database server. Because workload is removed from the database server not meeting these requirements, improved performance there is promoted. Furthermore, the approach switches the users in a way that attempts to keep performance and resource availability levels at the database server receiving the database sessions within goals for performance and resource availability.
摘要翻译： 一种方法将数据库会话从数据库服务器迁移到哪个性能和资源可用性要求未被满足到另一个数据库服务器。 因为从不符合这些要求的数据库服务器中删除工作负载，因此提升了性能。 此外，该方法以一种尝试在数据库服务器上保持性能和资源可用性级别的方式切换用户，以在性能和资源可用性的目标内接收数据库会话。
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6.发明授权Calculation of service performance grades in a multi-node environment that hosts the services 有权在承载服务的多节点环境中计算服务性能等级公开(公告)号：US07437459B2
公开(公告)日：2008-10-14
申请号：US10917661
申请日：2004-08-12
IPC分类号： G06F15/173 , G06F12/00
CPC分类号： H04L67/1008 , H04L67/1031
摘要： An approach generates performance grades. A performance grade is a value or set of values that indicates the relative work performance offered by a resource, such as a server in a multi-node system, relative to other resources. Performance grades are used to dynamically allocate work within a multi-node computer system. For example, performance grades are used for connection-time balancing, and to direct a database connection request to a multi-node database instance that a performance grade indicates provides better performance. Performance grade deltas are generated that reflect the incremental change in performance grade for additional sessions or work. Performance deltas are used to direct incoming sessions, to more optimally balance workload, and to deal with logon storms where a large number of connect requests arrive in a very short time period.
摘要翻译： 一种方法产生绩效等级。 性能等级是指示资源（如多节点系统中的服务器）相对于其他资源提供的相对工作性能的值或值集合。 性能等级用于在多节点计算机系统内动态分配工作。 例如，性能等级用于连接时间平衡，并将数据库连接请求引导到性能等级指示提供更好性能的多节点数据库实例。 产生性能等级三角形，反映其他会话或工作的性能等级的增量变化。 性能增量用于引导传入的会话，更好地平衡工作负载，并处理大量连接请求在很短时间内到达的登录风暴。
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7.发明授权Mapping source logical clock into destination logical clock in a distributed system 有权将源逻辑时钟映射到分布式系统中的目标逻辑时钟公开(公告)号：US07523143B2
公开(公告)日：2009-04-21
申请号：US10909985
申请日：2004-08-02
申请人： Lik Wong , Edwina Lu , James W. Stamos
发明人： Lik Wong , Edwina Lu , James W. Stamos
CPC分类号： G06F17/30575 , Y10S707/99953
摘要： A source database system sends information to a destination database system, and each database system generates a separate set of sequence information. A mapping is maintained between the two sets of sequence information. Using the mapping, the destination database system may be used to restore changes lost at the source database system without reinstating the source database. Additionally, queries associated with a particular point in a sequence associated with the sequence information of the source database may be redirected to the destination database, and the destination database system may serve as a logical standby for the source database system. A variety of methods of maintaining and/or extracting the mapping information are disclosed.
摘要翻译： 源数据库系统向目标数据库系统发送信息，每个数据库系统生成一组单独的序列信息。 在两组序列信息之间保持映射。 使用映射，目标数据库系统可用于恢复源数据库系统丢失的更改，而不会恢复源数据库。 此外，与源数据库的序列信息相关联的序列中的特定点相关联的查询可以被重定向到目的地数据库，并且目的地数据库系统可以用作源数据库系统的逻辑备用。 公开了维护和/或提取映射信息的各种方法。
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8.发明授权Commit-time ordered message queue supporting arbitrary read and dequeue patterns from multiple subscribers 有权提交时间有序消息队列支持来自多个订户的任意读取和出列模式公开(公告)号：US07680793B2
公开(公告)日：2010-03-16
申请号：US11245863
申请日：2005-10-07
申请人： Lik Wong , Hung Tran , James W. Stamos
发明人： Lik Wong , Hung Tran , James W. Stamos
IPC分类号： G06F17/30
CPC分类号： G06F17/30371 , Y10S707/99938
摘要： Data consistency in the context of information sharing requires maintenance of dependencies among information being shared. Transactional dependency ordering is implemented in a database system message queue, by associating a unique system commit time with each transactional message group. Read consistency is implemented in such a queue by allowing only messages with a fully determined order to be visible. A fully determined order is implemented through use of a high watermark, which guarantees that future transactions, for which messages are entering the queue, have commit times that are greater than the current high watermark. Therefore, only messages below the current high watermark are visible and can be dequeued, with no chance of other new messages enqueuing below the current high watermark.
摘要翻译： 信息共享上下文中的数据一致性需要维护正在共享的信息之间的依赖关系。 通过将唯一的系统提交时间与每个事务消息组相关联，在数据库系统消息队列中实现事务依赖性排序。 通过仅允许具有完全确定的顺序的消息可见，在这样的队列中实现读取一致性。 通过使用高水印实现完全确定的顺序，这保证了消息进入队列的未来事务具有大于当前高水印的提交时间。 因此，只有低于当前高水印的消息才可见，并且可以出队，没有其他新消息排入低于当前高水印的机会。
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公开(公告)号：US20090158298A1
公开(公告)日：2009-06-18
申请号：US11954739
申请日：2007-12-12
申请人： Abhishek Saxena , Neerja Bhatt , James W. Stamos
发明人： Abhishek Saxena , Neerja Bhatt , James W. Stamos
IPC分类号： G06F9/44
CPC分类号： G06F9/542 , G06F11/3476 , G06F11/3495 , G06F16/2358 , G06F2201/86
摘要： A system for managing event monitors within a database is provided. The system can adjust the amount of notifications generated by those event monitors, so as to achieve an effective balance between probability of notification loss and available notification bandwidth, as well as provide a better quality of service to database users.
摘要翻译： 提供了一种用于管理数据库内的事件监视器的系统。 该系统可以调整这些事件监视器产生的通知量，以便在通知丢失的概率和可用的通知带宽之间实现有效平衡，并为数据库用户提供更好的服务质量。
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公开(公告)号：US07856461B2
公开(公告)日：2010-12-21
申请号：US11224770
申请日：2005-09-12
IPC分类号： G06F17/00
CPC分类号： G06F17/30575 , Y10S707/953 , Y10S707/955 , Y10S707/96 , Y10S707/99944 , Y10S707/99946
摘要： Techniques are provided for maintaining high propagation availability for non-persistent messages. Destination-to-instance mapping information is provided to a listener process for a cluster database. The destination-to-instance mapping indicates the current owner instance of each single-instance destination within the cluster database. To establish a connection to a single-instance destination, a sending process sends a connection request to the global listener. The connection request identifies the desired destination queue, but not the owner instance of the queue. The global listener for the cluster database uses the destination-to-instance mapping to determine which instance is the current owner of the specified queue, and establishes a connection between the sending process and the appropriate owner instance.
摘要翻译： 提供了为非持久性消息保持高传播可用性的技术。 将目标到实例的映射信息提供给集群数据库的侦听器进程。 目标对实例映射指示集群数据库中每个单实例目标的当前所有者实例。 要建立与单实例目标的连接，发送进程会向全局侦听器发送连接请求。 连接请求标识所需的目标队列，但不标识队列的所有者实例。 集群数据库的全局侦听器使用目标到实例映射来确定哪个实例是指定队列的当前所有者，并在发送进程和适当的所有者实例之间建立连接。
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