SYSTEMS AND METHODS FOR HOLDING A QUERY
    2.
    发明申请
    SYSTEMS AND METHODS FOR HOLDING A QUERY 有权
    用于保持查询的系统和方法

    公开(公告)号:US20120203762A1

    公开(公告)日:2012-08-09

    申请号:US13021051

    申请日:2011-02-04

    IPC分类号: G06F17/30

    CPC分类号: G06F17/30463

    摘要: One example discloses a database management system that can comprise a memory for storing computer executable instructions and a processing unit for accessing the memory and executing the computer executable instructions. The computer executable instructions can comprise a compiler to hold a query received at a query input, thereby preventing the query from executing based on a cost comparison between an estimated resource execution cost of a query plan for the query and cost rules.

    摘要翻译: 一个实例公开了一种数据库管理系统,其可以包括用于存储计算机可执行指令的存储器和用于访问存储器并执行计算机可执行指令的处理单元。 计算机可执行指令可以包括编译器来保存在查询输入处接收的查询,从而基于查询的查询计划的估计资源执行成本与成本规则之间的成本比较来阻止查询执行。

    Workload management in a parallel database system
    3.
    发明申请
    Workload management in a parallel database system 有权
    并行数据库系统中的工作负载管理

    公开(公告)号:US20100153963A1

    公开(公告)日:2010-06-17

    申请号:US12316412

    申请日:2008-12-12

    IPC分类号: G06F9/46 G06F17/30

    摘要: Embodiments of the present invention are directed to a workload management service component of a parallel database-management system that monitors usage of computational resources in the parallel database-management system and that provides a query-processing-task-management interface and a query-execution engine that receives query-processing requests associated with one of a number of services from host computers and accesses the workload-management-services component to determine whether to immediately launch execution of query-processing tasks corresponding to the received query-processing requests or to place the query-processing requests on wait queues for subsequent execution based on the current usage of computational resources within the parallel database-management system.

    摘要翻译: 本发明的实施例涉及并行数据库管理系统的工作负载管理服务组件,其监视并行数据库管理系统中的计算资源的使用,并且提供查询处理任务管理接口和查询执行 引擎,其接收与来自主计算机的多个服务中的一个相关联的查询处理请求,并访问工作负载管理服务组件,以确定是否立即启动与接收到的查询处理请求相对应的查询处理任务的执行,或者放置 基于并行数据库管理系统内的计算资源的当前使用情况,查询处理对等待队列进行后续执行的请求。