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1. 发明授权

US07984015B2 Database workload capture and replay architecture 有权
标题翻译：数据库工作负载捕获和重播架构
公开(公告)号：US07984015B2
公开(公告)日：2011-07-19
申请号：US11800122
申请日：2007-05-03
申请人： Karl Dias , Leonidas Galanis , Jonathan Klein , Venkateshwaran Venkataramani , Yujun Wang , Richard Sarwal , Leng Tan , Graham Wood , Benoit Dageville , Chao Liang , Sanjay Kaluskar
发明人： Karl Dias , Leonidas Galanis , Jonathan Klein , Venkateshwaran Venkataramani , Yujun Wang , Richard Sarwal , Leng Tan , Graham Wood , Benoit Dageville , Chao Liang , Sanjay Kaluskar
IPC分类号： G06F7/00 , G06F17/00
CPC分类号： G06F17/30377
摘要： A method and apparatus for capturing database system workload and replaying that workload in a database system is provided. According to one aspect, in order to subject a test database system to the same workload to which the production database system actually would be subjected, a database server in the production system captures and records workload that the database server receives from external entities. This captured workload is processed. Processes external to a database server in the test database system send the processed workload to that database server. As a result, the test database system is subjected to the same workload to which the production database system originally was subjected. The foregoing technique permits a database administrator to determine how the production database system will fare if the difference that is present in the test database system is introduced into the production database system.
摘要翻译：提供了一种用于捕获数据库系统工作负载并在数据库系统中重播该工作负载的方法和装置。根据一个方面，为了使测试数据库系统处于生产数据库系统实际受到的相同工作负载，生产系统中的数据库服务器捕获并记录数据库服务器从外部实体接收的工作负载。处理此捕获的工作负载。测试数据库系统中数据库服务器外部的进程将处理的工作负载发送到该数据库服务器。因此，测试数据库系统受到生产数据库系统最初遭受的相同工作量的影响。如果将测试数据库系统中存在的差异引入到生产数据库系统中，则上述技术允许数据库管理员确定生产数据库系统将如何展示。

2. 发明申请

US20080097995A1 Database workload capture and replay architecture 有权
标题翻译：数据库工作负载捕获和重播架构
公开(公告)号：US20080097995A1
公开(公告)日：2008-04-24
申请号：US11800122
申请日：2007-05-03
申请人： Karl Dias , Leonidas Galanis , Jonathan Klein , Venkateshwaran Venkataramani , Yujun Wang , Richard Sarwal , Leng Tan , Graham Wood , Benoit Dageville , Chao Liang , Sanjay Kaluskar
发明人： Karl Dias , Leonidas Galanis , Jonathan Klein , Venkateshwaran Venkataramani , Yujun Wang , Richard Sarwal , Leng Tan , Graham Wood , Benoit Dageville , Chao Liang , Sanjay Kaluskar
IPC分类号： G06F17/30
CPC分类号： G06F17/30377
摘要： A method and apparatus for capturing database system workload and replaying that workload in a database system is provided. According to one aspect, in order to subject a test database system to the same workload to which the production database system actually would be subjected, a database server in the production system captures and records workload that the database server receives from external entities. This captured workload is processed. Processes external to a database server in the test database system send the processed workload to that database server. As a result, the test database system is subjected to the same workload to which the production database system originally was subjected. The foregoing technique permits a database administrator to determine how the production database system will fare if the difference that is present in the test database system is introduced into the production database system.
摘要翻译：提供了一种用于捕获数据库系统工作负载并在数据库系统中重播该工作负载的方法和装置。根据一个方面，为了使测试数据库系统处于生产数据库系统实际受到的相同工作负载，生产系统中的数据库服务器捕获并记录数据库服务器从外部实体接收的工作负载。处理此捕获的工作负载。测试数据库系统中数据库服务器外部的进程将处理的工作负载发送到该数据库服务器。因此，测试数据库系统受到生产数据库系统最初遭受的相同工作量的影响。如果将测试数据库系统中存在的差异引入到生产数据库系统中，则上述技术允许数据库管理员确定生产数据库系统将如何展示。

3. 发明申请

US20060206473A1 Methods and systems for database statement execution plan optimization 有权
公开(公告)号：US20060206473A1
公开(公告)日：2006-09-14
申请号：US11433842
申请日：2006-05-12
申请人： Sanjay Kaluskar , Namit Jain , Hakan Jakobsson , Graham Wood
发明人： Sanjay Kaluskar , Namit Jain , Hakan Jakobsson , Graham Wood
IPC分类号： G06F17/30
CPC分类号： G06F17/30463 , Y10S707/99932 , Y10S707/99933 , Y10S707/99934 , Y10S707/99942
摘要： The methods and systems for database statement execution plan optimization exploit bind variable data available on the network to build and optimize an execution plan for the statement. A system for database statement execution plan optimization comprises a bind variable analyzer, a frame allocator, and an optimizer, in addition to a parser for parsing and analyzing the statement, a type checker for type checking the statement, and a tree builder for building an expression tree.

4. 发明申请

US20060059228A1 Capturing and re-creating the state of a queue when migrating a session 有权
标题翻译：在迁移会话时捕获并重新创建队列的状态
公开(公告)号：US20060059228A1
公开(公告)日：2006-03-16
申请号：US11131653
申请日：2005-05-17
申请人： Ravikanth Kasamsetty , Ravi Koti , Sanjay Kaluskar , Chao Liang
发明人： Ravikanth Kasamsetty , Ravi Koti , Sanjay Kaluskar , Chao Liang
IPC分类号： G06F15/16
CPC分类号： G06F9/5088 , G06F9/546 , H04L67/14 , Y10S707/99942 , Y10S707/99953
摘要： A method and apparatus for migrating the session state of an original session from a first node to a second node, such that a process, executing in the migrated session, may enqueue and dequeue messages from a queue of messages and experience the same behavior from the queue of messages as if the process was enqueuing and dequeuing messages in the original session. Advantageously, all the benefits of migrating a session from one node to another node may be realized, even when the session contains queuing state information that describes the state of a queue of messages. Data that indicates how many messages one or more subscribers have removed from the queue of messages may also be stored to preserve proper behavior of the queue of messages for multiple subscribers when sessions are migrated.
摘要翻译：一种用于将原始会话的会话状态从第一节点迁移到第二节点的方法和装置，使得在迁移的会话中执行的进程可以从消息队列中排队和出列消息，并且经历相同的行为消息队列就好像进程在原始会话中排队和排队消息一样。有利地，即使当会话包含描述消息队列的状态的排队状态信息时，也可以实现将会话从一个节点迁移到另一个节点的所有好处。指示一个或多个订户已经从消息队列中移除多少消息的数据也可被存储，以便在会话被迁移时保留多个订户的消息队列的适当行为。

5. 发明授权

US09176772B2 Suspending and resuming of sessions 有权
标题翻译：暂停和恢复会话
公开(公告)号：US09176772B2
公开(公告)日：2015-11-03
申请号：US11057043
申请日：2005-02-11
申请人： Sanjay Kaluskar , Sreenivas Gollapudi
发明人： Sanjay Kaluskar , Sreenivas Gollapudi
IPC分类号： G06F17/30 , G06F9/48
CPC分类号： G06F9/4856 , G06F17/30289
摘要： A session established for an application is suspended from an instance and later resumed on the server or a different server. When a session is suspended, its state is captured and persistently stored as a session image in a data repository, and the session is terminated. When the session is resumed, a new session is established on an instance, the session image of the session to resume is retrieved from the repository and restored to the newly established session. The suspension and resumption of a session may be initiated by an application, which may request the suspension and resumption of a session.
摘要翻译：为应用程序建立的会话从一个实例中暂停，然后在服务器或不同的服务器上恢复。当会话被暂停时，其状态被捕获并持久存储为数据存储库中的会话映像，并且会话终止。当会话恢复时，在一个实例上建立一个新的会话，从存储库中检索要恢复的会话的会话映像并恢复到新建立的会话。暂停和恢复会议可由申请人启动，申请可能要求暂停和恢复会议。

6. 发明授权

US07613741B2 Utilizing rules in a distributed information sharing system 有权
标题翻译：利用分布式信息共享系统中的规则
公开(公告)号：US07613741B2
公开(公告)日：2009-11-03
申请号：US10449873
申请日：2003-05-30
申请人： Edwina Lu , Lik Wong , Sanjay Kaluskar , James Stamos , Neerja Bhatt , Wei Wang
发明人： Edwina Lu , Lik Wong , Sanjay Kaluskar , James Stamos , Neerja Bhatt , Wei Wang
IPC分类号： G06F17/30
CPC分类号： G06F17/30575 , Y10S707/99953
摘要： Described herein are various approaches that allow rules to be used to specify actions, that alleviate the complexity and burden of developing and maintaining rules in a rules-based messaging system, and that provide more efficient ways of evaluating rules. The approaches allow rules to specify user-defined transformation functions for transforming messages, to specify when and how to perform row migration, and to specify other types of actions. Rules are grouped into rule sets. Several types of rule sets, referred to as positive and negative rule sets, allow users to use rules that are less complex to develop and maintain. Rule sets are evaluated more efficiently by attempting to evaluate the rule set with less information than is needed to evaluate all the rules in the rule set. Also, the results of rules evaluations that are based on a set of values are cached for later retrieval.
摘要翻译：这里描述了允许规则用于指定动作的各种方法，其减轻了在基于规则的消息传递系统中开发和维护规则的复杂性和负担，并且提供了更有效的评估规则的方式。这些方法允许规则指定用于转换消息的用户定义的转换功能，指定何时以及如何执行行迁移，并指定其他类型的操作。规则分为规则集。称为正和负规则集的几种类型的规则集允许用户使用开发和维护不太复杂的规则。通过尝试使用比评估规则集中的所有规则所需的信息更少的信息来评估规则集，可以更有效地评估规则集。此外，基于一组值的规则评估结果被缓存以供以后检索。

7. 发明授权

US07415522B2 Extensible framework for transferring session state 有权
标题翻译：可扩展的会话状态转移框架
公开(公告)号：US07415522B2
公开(公告)日：2008-08-19
申请号：US10917843
申请日：2004-08-12
申请人： Sanjay Kaluskar , Sreenivas Gollapudi
发明人： Sanjay Kaluskar , Sreenivas Gollapudi
IPC分类号： G06F15/16 , G06F12/00
CPC分类号： G06F17/30575 , H04L67/148
摘要： Techniques allow a client to be switched from a session on a server to another session on another server in a way that is a transparent to the application for which the initial session was established. Thus, under transparent session migration, a client is switched between sessions without executing application instructions tailored to accomplish the migration. Instead, a client-side interface component, through which the application interacts with the server, handles details of migration, modifying the internal state of the client-side interface component to effect the same. Legacy applications do not have to be modified in order to institute techniques described herein.
摘要翻译：技术允许客户端以对初始会话建立的应用程序透明的方式从服务器上的会话切换到另一个服务器上的另一个会话。因此，在透明会话迁移下，客户端在会话之间切换，而不执行为完成迁移而定制的应用程序指令。相反，应用程序与服务器交互的客户端接口组件处理迁移的细节，修改客户端接口组件的内部状态来实现。传统的应用程序不需要修改，以便建立这里描述的技术。

8. 发明申请

US20060184535A1 Suspension and resuming of sessions 有权
标题翻译：暂停和恢复会话
公开(公告)号：US20060184535A1
公开(公告)日：2006-08-17
申请号：US11057043
申请日：2005-02-11
申请人： Sanjay Kaluskar , Sreenivas Gollapudi
发明人： Sanjay Kaluskar , Sreenivas Gollapudi
IPC分类号： G06F17/30
CPC分类号： G06F9/4856 , G06F17/30289
摘要： A session established for an application is suspended from an instance and later resumed on the server or a different server. When a session is suspended, its state is captured and persistently stored as a session image in a data repository, and the session is terminated. When the session is resumed, a new session is established on an instance, the session image of the session to resume is retrieved from the repository and restored to the newly established session. The suspension and resumption of a session may be initiated by an application, which may request the suspension and resumption of a session.
摘要翻译：为应用程序建立的会话从一个实例中暂停，然后在服务器或不同的服务器上恢复。当会话被暂停时，其状态被捕获并持久存储为数据存储库中的会话映像，并且会话终止。当会话恢复时，在一个实例上建立一个新的会话，从存储库中检索要恢复的会话的会话映像并恢复到新建立的会话。暂停和恢复会议可由申请人启动，申请可能要求暂停和恢复会议。

9. 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.

10. 发明授权

US09489424B2 Cursor pre-fetching 有权
标题翻译：光标预取
公开(公告)号：US09489424B2
公开(公告)日：2016-11-08
申请号：US11018101
申请日：2004-12-20
申请人： Sanjay Kaluskar , Sreenivas Gollapudi
发明人： Sanjay Kaluskar , Sreenivas Gollapudi
IPC分类号： G06F15/16 , G06F17/30 , H04L29/08 , H04L12/861 , H04L12/70
CPC分类号： G06F17/3048 , G06F17/3041 , G06F17/30477 , G06F17/30501 , H04L49/9005 , H04L67/2847 , H04L2012/5681
摘要： Techniques determine a quantity of rows to fetch based on memory available on a client computer and the fetch state of cursors. The techniques are used to determine a quantity of rows for “pre-fetching”. Under pre-fetching, rows in addition to those requested by an application are fetched from a database instance and stored in a “pre-fetch buffer”. The pre-fetch quantities are based on an amount of memory that is deemed available for pre-fetch buffers on a client computer and the number of cursors in the fetch state for a session at a given moment. Pre-fetching is used to hasten session migration. By fetching a quantity of rows that is larger than would be fetched if only the application-specified quantity were fetched, the fetch phase of a cursor is completed sooner. An earlier completion of the fetch phase of a session's cursors allows migration of the session to be completed sooner.
摘要翻译：技术根据客户端计算机上可用的内存和光标的获取状态确定要提取的行数。这些技术用于确定“预取”的行数。在预取前，除应用程序请求之外的行还从数据库实例获取并存储在“预取缓冲区”中。预取量基于在客户端计算机上被认为可用于预取缓冲区的存储器量，以及在给定时刻的会话的获取状态中的游标数量。预取用于加快会话迁移。如果仅获取应用程序指定的数量，则通过获取大于将被提取的行数，则光标的获取阶段将更早完成。会话的游标的提取阶段的早期完成允许更快地完成会话的迁移。

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