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    • 12. 发明授权
    • Predictive database pool preparation
    • 预测数据库池准备
    • US07908268B2
    • 2011-03-15
    • US11944776
    • 2007-11-26
    • Hans-Juergen BildhaeuserHolger KarnAndreas Limmer
    • Hans-Juergen BildhaeuserHolger KarnAndreas Limmer
    • G06F7/00G06F17/30
    • G06F17/3048
    • A method, system, and computer program product are provided for operating a relational database management system (RDBMS). In order to operate a RDBMS, information is read from a first execution plan in response to an execution request for a second individual database statement of a second sequence of database statements. The information is processed and pool resource requirements for execution of further individual database statements of the second sequence of database statements are evaluated. A preparation request is sent for pool modification based on the evaluated pool resource requirements to an asynchronous pool preparation queue. Then the second individual database statement of the second sequence of database statements is executed. The information indicative of the progression of execution of the second individual database statement is stored in a position register.
    • 提供了一种用于操作关系数据库管理系统(RDBMS)的方法,系统和计算机程序产品。 为了操作RDBMS,响应于第二个数据库语句序列的第二个数据库语句的执行请求,从第一执行计划读取信息。 处理信息,并评估用于执行第二个数据库语句序列的其他单个数据库语句的池资源要求。 根据对异步池准备队列的评估池资源需求,发送一个准备请求,用于池修改。 然后执行第二个数据库语句序列的第二个数据库语句。 指示第二个数据库语句的执行进度的信息存储在位置寄存器中。
    • 14. 发明授权
    • Method and infrastructure for accessing remote applications through a secure firewall
    • 通过安全防火墙访问远程应用程序的方法和基础设施
    • US08788619B2
    • 2014-07-22
    • US11422300
    • 2006-06-05
    • Holger KarnTorsten Steinbach
    • Holger KarnTorsten Steinbach
    • G06F13/00H04L29/08
    • H04L29/08072H04L41/5022H04L63/029H04L63/0428H04L67/02
    • A method, computer program product, and infrastructure for accessing a remote application running on a system A by a system B, each being connected to an open network and located behind a firewall, are provided. The method, computer program product, and infrastructure provide for system A sending a first HTTP request to system B via the open network, blocking the first HTTP request from system A till an application request is available at system B, system B sending an HTTP response to system A via the open network, the HTTP response comprising the application request, system A processing the application request from system B to generate an application response, system A sending a second HTTP request to system B via the open network, the second HTTP request comprising the application response, and blocking the second HTTP request from system A till another application request is available at system B.
    • 提供了一种方法,计算机程序产品和用于访问由系统B在系统A上运行的远程应用的基础设施,每个系统B都连接到开放网络并位于防火墙后面。 该方法,计算机程序产品和基础设施为系统A提供了通过开放网络向系统B发送第一个HTTP请求,阻止来自系统A的第一个HTTP请求,直到应用程序请求在系统B可用,系统B发送HTTP响应 经由开放网络到系统A,包括应用请求的HTTP响应,系统A处理来自系统B的应用请求以产生应用响应,系统A经由开放网络向系统B发送第二HTTP请求,第二HTTP请求 包括应用程序响应,并阻止来自系统A的第二个HTTP请求,直到另一个应用程序请求在系统B可用。
    • 17. 发明授权
    • Self-healing RDBMS optimizer
    • 自愈RDBMS优化器
    • US07415455B2
    • 2008-08-19
    • US11457971
    • 2006-07-17
    • Holger KarnBryan F. Smith
    • Holger KarnBryan F. Smith
    • G06F17/30G06F15/16
    • G06F17/30595G06F17/30967Y10S707/99932Y10S707/99933Y10S707/99953
    • A method, computer program product, and system for triggering an update of statistics data used by a query optimizer of a relational database management system for determining an optimal execution plan for executing a received query request on a relational database is provided. A system dependent nominal performance value for executing the query request on a database system is determined. Additionally, an average actual performance value is determined by processing the query request. If a comparison between the average actual performance value and the system dependent nominal performance value yields a result which is greater than a first threshold value, an update cost value and a cost saving value are determined. If a comparison between the cost saving value and the update cost value yields a result which is greater than a second threshold value, the statistics data is updated.
    • 提供了一种用于触发关系数据库管理系统的查询优化器使用的统计数据更新的方法,计算机程序产品和系统,用于确定用于在关系数据库上执行接收到的查询请求的最佳执行计划。 确定用于在数据库系统上执行查询请求的依赖于系统的标称性能值。 另外,通过处理查询请求来确定平均实际性能值。 如果平均实际性能值与系统相关的名义性能值之间的比较产生大于第一阈值的结果,则确定更新成本值和成本节约值。 如果成本节省值和更新成本值之间的比较产生大于第二阈值的结果,则更新统计数据。
    • 18. 发明申请
    • Method and Infrastructure for Accessing Remote Applications
    • 访问远程应用程序的方法和基础设施
    • US20070165606A1
    • 2007-07-19
    • US11422300
    • 2006-06-05
    • Holger KarnTorsten Steinbach
    • Holger KarnTorsten Steinbach
    • H04L12/66
    • H04L29/08072H04L41/5022H04L63/029H04L63/0428H04L67/02
    • A method, computer program product, and infrastructure for accessing a remote application running on a system A by a system B, each being connected to an open network and located behind a firewall, are provided. The method, computer program product, and infrastructure provide for system A sending a first HTTP request to system B via the open network, blocking the first HTTP request from system A till an application request is available at system B, system B sending an HTTP response to system A via the open network, the HTTP response comprising the application request, system A processing the application request from system B to generate an application response, system A sending a second HTTP request to system B via the open network, the second HTTP request comprising the application response, and blocking the second HTTP request from system A till another application request is available at system B.
    • 提供了一种方法,计算机程序产品和用于访问由系统B在系统A上运行的远程应用的基础设施,每个系统B都连接到开放网络并位于防火墙后面。 该方法,计算机程序产品和基础设施为系统A提供了通过开放网络向系统B发送第一个HTTP请求,阻止来自系统A的第一个HTTP请求,直到应用程序请求在系统B可用,系统B发送HTTP响应 经由开放网络到系统A,包括应用请求的HTTP响应,系统A处理来自系统B的应用请求以产生应用响应,系统A经由开放网络向系统B发送第二HTTP请求,第二HTTP请求 包括应用程序响应,并阻止来自系统A的第二个HTTP请求,直到另一个应用程序请求在系统B可用。
    • 20. 发明授权
    • Cache configuration in a database system
    • 数据库系统中的缓存配置
    • US07788449B2
    • 2010-08-31
    • US11734144
    • 2007-04-11
    • Holger KarnSven Miller
    • Holger KarnSven Miller
    • G06F12/00
    • G06F12/0802G06F2212/601
    • A computer-implemented method is disclosed. The method includes collecting cache-efficiency-indicator values of an at least one cache fragment during operation of a database system over a period of time. Providing approximation-function-parameter values for the collected, cache-efficiency-indicator values, an approximation function representing a relation between a cache-efficiency-indicator and the size of a respective cache fragment. The method continues by providing a set of workload windows based on the approximation-function-parameter values. Next, providing a workload-window information for the set of workload windows, the workload-window information including at least one approximation-function-parameter value representing each determined workload window. The method further includes storing the workload-window information for a comparison based on current, cache-efficiency-indicator values and the workload-window information.
    • 公开了一种计算机实现的方法。 该方法包括在一段时间内在数据库系统的操作期间收集至少一个缓存片段的缓存效率指示符值。 为收集的高速缓存效率指标值提供近似函数参数值,表示高速缓存效率指示符与相应缓存片段大小之间的关系的近似函数。 该方法通过基于近似函数参数值提供一组工作负载窗口来继续。 接下来,提供工作负载窗口集合的工作负载窗口信息,工作负载窗口信息包括表示每个确定的工作负载窗口的至少一个近似函数参数值。 该方法还包括基于当前的缓存效率指示符值和工作负载窗口信息来存储用于比较的工作负载窗口信息。