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1. 发明授权

US07346690B1 Deferred piggybacked messaging mechanism for session reuse 有权
标题翻译：延迟捎带的消息传递机制，用于会话重用
公开(公告)号：US07346690B1
公开(公告)日：2008-03-18
申请号：US10160128
申请日：2002-05-30
申请人： Bipul Sinha , Amit Ganesh , Lakshminarayanan Chidambaran
发明人： Bipul Sinha , Amit Ganesh , Lakshminarayanan Chidambaran
IPC分类号： G06F15/16 , G06F7/00
CPC分类号： G06F17/30286 , Y10S707/99942
摘要： Described herein is a session reuse approach that reuses a session already established on a remote participant to execute an autonomous transaction. The session is reused in a manner that avoids affecting the session's state in a way adverse to later execution of the containing transaction. When beginning an autonomous transaction on a local participant, a request to initiate an autonomous transaction on a remote participant is deferred or not sent at all if the containing transaction is a distributed one. The request may be sent later, piggybacked to another message, using a piggyback messaging system. When ending an autonomous transaction, a local participant may send a request to a remote participant requesting that the remote participant commence execution of its respective containing transaction. The request is piggybacked to another message, and is thus transmitted without having to transmit the request separately, avoiding a message round trip.
摘要翻译：这里描述的是重用在远程参与者上已建立的会话来执行自主事务的会话重用方法。会话被重复使用，以避免影响会话状态的方式不利于稍后执行包含事务。当在本地参与者开始自主交易时，如果包含的交易是分布式交易，则在远程参与者上发起自主交易的请求被推迟或不被发送。该请求可以稍后发送，使用搭载邮件系统捎带到另一个消息。当结束自主交易时，本地参与者可以向远程参与者发送请求，请求远程参与者开始执行其相应的包含交易。该请求捎带到另一个消息，并且因此被传送而不必分别发送请求，避免信息往返。

2. 发明授权

US07624112B2 Asynchronously storing transaction information from memory to a persistent storage 有权
标题翻译：将存储器中的事务信息异步存储到持久存储器
公开(公告)号：US07624112B2
公开(公告)日：2009-11-24
申请号：US10407998
申请日：2003-04-03
申请人： Amit Ganesh , Bipul Sinha , Lakshminarayanan Chidambaran
发明人： Amit Ganesh , Bipul Sinha , Lakshminarayanan Chidambaran
IPC分类号： G06F17/00
CPC分类号： G06F9/466
摘要： A method and apparatus for asynchronously storing transaction information related to a transaction is provided. A client process executing on a client may initiate a transaction request with a server. The server processes the transaction, commits the transaction, and writes transaction information associated with the transaction to memory without durably storing the transaction information. Thereafter, the server processing the transaction returns a message to the client that the transaction has been committed. A server process, which performed the transaction, may be reassigned to commit new work. Additional information that may be useful for the client about the result of the transaction may be contained in the message. Next, transaction information stored in memory is durably stored. A log writer may be used to durably store the transaction information to a log file. The client is subsequently notified that the transaction information has been durably stored at a client listening process.
摘要翻译：提供了用于异步地存储与事务相关的交易信息的方法和装置。在客户端上执行的客户端进程可以发起与服务器的事务请求。服务器处理事务，提交事务，并将与事务相关联的事务信息写入到存储器中，而不会持久地存储事务信息。此后，处理该事务的服务器向客户端返回一个消息，即该事务已被提交。执行该事务的服务器进程可能被重新分配以提交新的工作。可能对客户有关事务结果有用的其他信息可能包含在消息中。接下来，存储在存储器中的交易信息被持久地存储。可以使用日志写入器将事务信息持久地存储到日志文件中。随后通知客户事务信息已经在客户端监听过程中持久存储。

3. 发明授权

US10296629B2 Server supporting a consistent client-side cache 有权
公开(公告)号：US10296629B2
公开(公告)日：2019-05-21
申请号：US11876679
申请日：2007-10-22
申请人： Lakshminarayanan Chidambaran , Mehul Dilip Bastawala , Srinath Krishnaswamy , Tirthankar Lahiri , Juan R. Loaiza , Bipul Sinha , Srinivas S. Vemuri
发明人： Lakshminarayanan Chidambaran , Mehul Dilip Bastawala , Srinath Krishnaswamy , Tirthankar Lahiri , Juan R. Loaiza , Bipul Sinha , Srinivas S. Vemuri
IPC分类号： G06F7/00 , G06F17/30 , G06F17/00
摘要： A method, system, and computer program product is disclosed for interacting with a client supported by a client-side cache. Embodiments of a method, a system, and a computer program product are disclosed that retrieve a first snapshot, indicating a state of the database after a last database request by the client, associated with the client, determine any number of invalid cached results for the client based on the first snapshot, and transmit the any number of invalid cached results and a second snapshot, an update for the first snapshot.

4. 发明授权

US09697253B2 Consistent client-side cache 有权
公开(公告)号：US09697253B2
公开(公告)日：2017-07-04
申请号：US11875782
申请日：2007-10-19
申请人： Lakshminarayanan Chidambaran , Mehul Dilip Bastawala , Srinath Krishnaswamy , Tirthankar Lahiri , Juan R. Loaiza , Bipul Sinha , Srinivas S. Vemuri
发明人： Lakshminarayanan Chidambaran , Mehul Dilip Bastawala , Srinath Krishnaswamy , Tirthankar Lahiri , Juan R. Loaiza , Bipul Sinha , Srinivas S. Vemuri
IPC分类号： G06F17/30
CPC分类号： G06F17/3048
摘要： A method, system, and computer program product is disclosed for caching results in a client-side cache. Embodiments of a method, a system, and a computer program product are disclosed that associate a first snapshot of a database with a client that indicates a state of the database after a last database request by the client, and indicate any number of invalid cached results in the client cache for the client based upon the first snapshot. In some embodiments, the method further includes receiving a second snapshot that indicates a state of the database upon receipt of a database server request by the client, and updating the first snapshot with the second snapshot.

5. 发明授权

US07401084B1 Two-phase commit with queryable caches 有权
标题翻译：两阶段提交可查询的缓存
公开(公告)号：US07401084B1
公开(公告)日：2008-07-15
申请号：US09881505
申请日：2001-06-14
申请人： Bipul Binit Sinha , Amit Ganesh , Lakshminarayanan Chidambaran
发明人： Bipul Binit Sinha , Amit Ganesh , Lakshminarayanan Chidambaran
IPC分类号： G06F17/30
CPC分类号： G06F17/30575 , G06F17/30457
摘要： An optimization of the two-phase commit protocol employed in distributed systems. Each cohort component of the distributed system augments messages that are accessible to the coordinator component with state information indicating whether the cohort is read-only with regard to a transaction that the coordinator is coordinating. The coordinator retains the most recent state information. The coordinator reads the retained state information for the cohorts and when the transaction terminates, the coordinator reads the retained state information. Where the cohort's state is read-only, the coordinator simply sends an abort message instead of performing the full two-phase commit protocol with regard to the read-only cohort. In the trees of distributed system components that are defined by transactions, any cohort which has children in the tree is a local coordinator for its children. The general technique of cohorts augmenting messages accessible to a coordinator with state information that is relevant to an action to be performed by the coordinator and the coordinator acting in accordance with state retained from the messages has other uses as well.
摘要翻译：分布式系统中采用的两阶段提交协议的优化。分布式系统的每个队列组件增加协调器组件可访问的消息，状态信息指示该协调器正在协调的关于事务的队列是否为只读。协调员保留最新的状态信息。协调器读取队列的保留状态信息，当事务终止时，协调器读取保留的状态信息。在队列状态为只读状态的情况下，协调器只需发送中止消息，而不是针对只读队列执行完整的两阶段提交协议。在由事务定义的分布式系统组件的树中，树中有子节点的任何队列都是其子节点的本地协调器。队列的一般技术将协调器可访问的消息扩展到状态信息，该状态信息与由协调器和协调器执行的动作相关，该协调器和协调器根据从消息保留的状态来执行，还有其他用途。

6. 发明授权

US07552171B2 Incremental run-time session balancing in a multi-node system 有权
标题翻译：多节点系统中的增量运行时会话平衡
公开(公告)号：US07552171B2
公开(公告)日：2009-06-23
申请号：US10918055
申请日：2004-08-12
申请人： Lakshminarayanan Chidambaran , Debashish Chatterjee , James W. Stamos
发明人： Lakshminarayanan Chidambaran , Debashish Chatterjee , James W. Stamos
IPC分类号： G06F15/16 , G06F12/00
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。

7. 发明授权

US07437459B2 Calculation of service performance grades in a multi-node environment that hosts the services 有权
标题翻译：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
申请人： Lakshminarayanan Chidambaran , Christopher A. Kantarjiev , James W. Stamos , Peter Povinec
发明人： Lakshminarayanan Chidambaran , Christopher A. Kantarjiev , James W. Stamos , Peter Povinec
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。

8. 发明授权

US07337226B2 Method and mechanism for implementing dynamic sizing of session pools 有权
标题翻译：实现会话池动态调整的方法和机制
公开(公告)号：US07337226B2
公开(公告)日：2008-02-26
申请号：US10427701
申请日：2003-04-30
申请人： Debashis Saha , Srinath Krishnaswamy , Lakshminarayanan Chidambaran
发明人： Debashis Saha , Srinath Krishnaswamy , Lakshminarayanan Chidambaran
IPC分类号： G06F15/16 , G06F15/173
CPC分类号： G06F17/30457 , Y10S707/99945
摘要： An improved method, mechanism, and system for implementing, generating, and maintaining for implementing session pools is disclosed. Disclosed is a method, mechanism, and system for dynamic sizing of session pools, in which the number of sessions in a given session pool or sub-session pool can be dynamically adjusted upwards or downwards. Also disclosed is an approach for customizing a session in a session pool with a specific set of affinities and attributes, in which tags can be associated with the customized sessions. Tagging can be used to identify sessions to deallocate/reallocate to dynamically size the session or sub-session pools.
摘要翻译：公开了一种用于实现，生成和维护实现会话池的改进方法，机制和系统。公开了一种用于动态调整会话池的方法，机制和系统，其中给定会话池或子会话池中的会话数可以向上或向下动态调整。还公开了一种用于在会话池中定制具有特定一组亲和度和属性的会话的方法，其中标签可以与定制会话相关联。标记可用于识别会话以释放/重新分配以动态地调整会话或子会话池的大小。

9. 发明申请

US20060064400A1 Methods, systems and software for identifying and managing database work 审中-公开
标题翻译：用于识别和管理数据库工作的方法，系统和软件
公开(公告)号：US20060064400A1
公开(公告)日：2006-03-23
申请号：US10946749
申请日：2004-09-21
申请人： Alex Tsukerman , Carol Colrain , Graham Wood , Jane Chen , Lakshminarayanan Chidambaran , Benoit Dageville , Gary Ngai , Mark Ramacher
发明人： Alex Tsukerman , Carol Colrain , Graham Wood , Jane Chen , Lakshminarayanan Chidambaran , Benoit Dageville , Gary Ngai , Mark Ramacher
IPC分类号： G06F17/30
CPC分类号： G06F16/27
摘要： Various embodiments of the invention provide solutions to allow more sophisticated management of the relationship between a database and its clients (which can be, inter alia, end users, business applications, etc.). Merely by way of example, some embodiments can facilitate the management of work requests in a database, as well as the management of the quality-of-service in a database system. In some embodiments, an identification handle may be assigned to a database work request. A database management application can use the identification handle to identify the work request, as well, perhaps, as any related work requests. The identification handle may also identify the database (and/or an instance thereof) and/or a clustered database node, and the identification handle may be transmitted to a mid-tier application, e.g., to notify the mid-tier about the processing of the work request, changes in quality-of service, server availability, etc.
摘要翻译：本发明的各种实施例提供了解决方案，以允许数据库与其客户端之间的关系（其可以是最终用户，业务应用等）的更为复杂的管理。仅仅作为示例，一些实施例可以促进对数据库中的工作请求的管理以及数据库系统中的服务质量的管理。在一些实施例中，可以将识别句柄分配给数据库工作请求。数据库管理应用程序可以使用识别句柄来识别工作请求，也可以是任何相关的工作请求。识别句柄还可以识别数据库（和/或其实例）和/或集群数据库节点，并且识别句柄可以被发送到中间层应用，例如，向中层通知关于工作请求，服务质量的变化，服务器可用性等。

10. 发明申请

US20060059176A1 Suspending a result set and continuing from a suspended result set 有权
公开(公告)号：US20060059176A1
公开(公告)日：2006-03-16
申请号：US11097422
申请日：2005-04-01
申请人： Mehul Bastawala , Lakshminarayanan Chidambaran , Sreenivas Gollapudi , Sanjay Kaluskar , Srinath Krishnaswamy , Debashish Chatterjee
发明人： Mehul Bastawala , Lakshminarayanan Chidambaran , Sreenivas Gollapudi , Sanjay Kaluskar , Srinath Krishnaswamy , Debashish Chatterjee
IPC分类号： G06F17/30
CPC分类号： G06F17/30501 , G06F17/3041
摘要： A system, method, computer program and system for suspending a result set and continuing from a suspended result set for a cursor is disclosed. The rows from a row source corresponding to the cursor result set are suspended into storage so that when a fetch is requested the data can be sent (continued) from the suspended storage and does not depend on the original cursor row source or session to be available.

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