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11. 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。

12. 发明授权

US07587400B2 Suspending a result set and continuing from a suspended result set for transparent session migration 有权
标题翻译：暂停结果集，并从暂停的结果集中继续进行透明会话迁移
公开(公告)号：US07587400B2
公开(公告)日：2009-09-08
申请号：US11097862
申请日：2005-04-01
申请人： Mehul D. Bastawala , Lakshminarayanan Chidambaran , Sreenivas Gollapudi , Sanjay Kaluskar , Srinath Krishnaswamy , Debashish Chatterjee
发明人： Mehul D. Bastawala , Lakshminarayanan Chidambaran , Sreenivas Gollapudi , Sanjay Kaluskar , Srinath Krishnaswamy , Debashish Chatterjee
IPC分类号： G06F7/00 , G06F17/00
CPC分类号： G06F17/30595 , Y10S707/99953
摘要： A system, method, computer program and system for suspending a result set and continuing from a suspended result set for transparent session migration is disclosed. The rows from a row source are suspended into storage, so that after session migration, the client fetches can transparently continue from the suspended result set.
摘要翻译：公开了一种用于暂停结果集并从悬浮结果集继续进行透明会话迁移的系统，方法，计算机程序和系统。来自行源的行被暂停到存储中，以便在会话迁移之后，客户机提取可以从挂起的结果集中透明地继续。

13. 发明授权

US07552218B2 Transparent session migration across servers 有权
标题翻译：跨服务器的透明会话迁移
公开(公告)号：US07552218B2
公开(公告)日：2009-06-23
申请号：US10917953
申请日：2004-08-12
申请人： Sanjay Kaluskar , Sreenivas Gollapudi , Debashish Chatterjee
发明人： Sanjay Kaluskar , Sreenivas Gollapudi , Debashish Chatterjee
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。

14. 发明授权

US07366713B2 Extensible rules engine in a database management system 有权
标题翻译：数据库管理系统中的可扩展规则引擎
公开(公告)号：US07366713B2
公开(公告)日：2008-04-29
申请号：US10418882
申请日：2003-04-17
申请人： Sanjay Kaluskar , Wei Wang , Dieter Gawlick , James Stamos
发明人： Sanjay Kaluskar , Wei Wang , Dieter Gawlick , James Stamos
IPC分类号： G06F17/30
CPC分类号： G06F17/2241 , G06F17/2247 , G06F17/30289 , G06F17/30917 , Y10S707/961 , Y10S707/99933 , Y10S707/99943
摘要： An extensible rules engine that uses database technology provides a rules evaluation service for applications external to the database server or database management system. Applications are able to utilize the rules engine to provide alternative behaviors based on information against which specified conditions are evaluated. A framework is provided for specifying data definitions that can be referenced by user-defined rules, through creation and use of an evaluation context. Application-specific data types can be defined by specifying data tables and/or variables that can be referenced by rules created for evaluation against data that is associated with the evaluation context. The data against which rules are evaluated can be provided as an in-memory object. A security model is provided in which the privilege to create rules according to a particular evaluation context is controlled by one privilege, whereas the privilege to access underlying tables or variables is controlled by another privilege.
摘要翻译：使用数据库技术的可扩展规则引擎为数据库服务器或数据库管理系统外部的应用程序提供规则评估服务。应用程序能够利用规则引擎提供基于评估指定条件的信息的替代行为。提供了一个框架，用于通过创建和使用评估上下文来指定可由用户定义的规则引用的数据定义。应用程序特定的数据类型可以通过指定可以根据与评估上下文相关联的数据进行评估而创建的规则引用的数据表和/或变量来定义。评估规则的数据可以作为内存中对象提供。提供了一种安全模型，其中根据特定评估上下文创建规则的权限由一个权限控制，而访问基础表或变量的权限由另一个权限控制。

15. 发明申请

US20060036616A1 Suspending a result set and continuing from a suspended result set for scrollable cursors 有权
标题翻译：暂停结果集并从可滚动光标的挂起结果集继续
公开(公告)号：US20060036616A1
公开(公告)日：2006-02-16
申请号：US11097065
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： G06F7/00
CPC分类号： G06F17/30457
摘要： A system, method, computer program and system for suspending a result set and continuing from a suspended result set for a scrollable cursor is disclosed. The rows from a row source corresponding to the scrollable 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 scrollable cursor row source or session to be available.
摘要翻译：公开了一种用于暂停结果集并从用于可滚动游标的暂停结果集继续的系统，方法，计算机程序和系统。来自与可滚动光标结果集相对应的行源的行被暂停到存储器中，使得当请求提取时，可以从挂起的存储器发送（继续）数据，并且不依赖于原始可滚动光标行源或会话能得到的。

16. 发明申请

US20050038828A1 Transparent migration of stateless sessions across servers 有权
标题翻译：跨服务器透明地迁移无状态会话
公开(公告)号：US20050038828A1
公开(公告)日：2005-02-17
申请号：US10917882
申请日：2004-08-12
申请人： Sanjay Kaluskar , Sreenivas Gollapudi
发明人： Sanjay Kaluskar , Sreenivas Gollapudi
IPC分类号： G06F7/00 , G06F15/16 , G06F17/00 , G06F17/30
CPC分类号： G06F17/30575 , H04L67/148
摘要： Techniques allow a client to be migrated from a session that has been established for a client 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. The sessions are migrated under conditions in which a copy of session state of the session to migrate from the source node does not have to be captured and restored to a destination session.
摘要翻译：技术允许将客户端从对服务器上的客户端建立的会话迁移到另一个服务器上的另一个会话，方式对于初始会话建立的应用程序是透明的。在不需要捕获并将其恢复到目的地会话的情况下，会话将从源节点迁移的会话状态的副本迁移到该会话。

17. 发明授权

US08005802B2 Partial evaluation of rule sets 有权
标题翻译：规则集的部分评估
公开(公告)号：US08005802B2
公开(公告)日：2011-08-23
申请号：US10452850
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 , Y10S707/99939 , Y10S707/99942 , Y10S707/99943
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。

18. 发明授权

US07747754B2 Transparent migration of stateless sessions across servers 有权
标题翻译：跨服务器透明地迁移无状态会话
公开(公告)号：US07747754B2
公开(公告)日：2010-06-29
申请号：US10917882
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
CPC分类号： G06F17/30575 , H04L67/148
摘要： Techniques allow a client to be migrated from a session that has been established for a client 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. The sessions are migrated under conditions in which a copy of session state of the session to migrate from the source node does not have to be captured and restored to a destination session.
摘要翻译：技术允许将客户端从对服务器上的客户端建立的会话迁移到另一个服务器上的另一个会话，方式对于初始会话建立的应用程序是透明的。在不需要捕获并将其恢复到目的地会话的情况下，会话将从源节点迁移的会话状态的副本迁移到该会话。

19. 发明授权

US07565379B2 Preventing change cycling using rules and redo tags in a redo log 有权
标题翻译：防止在重做日志中使用规则和重做标记进行更改循环
公开(公告)号：US07565379B2
公开(公告)日：2009-07-21
申请号：US10452761
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： G06F17/00
CPC分类号： G06F7/00 , Y10S707/99945
摘要： In some messaging system architectures, messages can cycle back to the originator of a message, who may then propagate the message, causing the cycle to be repeated. Described herein are techniques that use rules and fields in a redo log, to manage message flows such that undesired cycles are prevented. The techniques may be used in messaging systems that have various topologies.
摘要翻译：在一些消息系统架构中，消息可以循环回到消息的发起者，然后谁可以传播消息，导致重复循环。这里描述的是使用重做日志中的规则和字段来管理消息流的技术，从而防止不期望的周期。这些技术可以用于具有各种拓扑的消息系统中。

20. 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。

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