会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 4. 发明申请
    • Providing mappings between logical time values and real time values in a multinode system
    • 在多节点系统中提供逻辑时间值和实时值之间的映射
    • US20050278359A1
    • 2005-12-15
    • US10866234
    • 2004-06-10
    • Wanli YangBipul SinhaAmit Ganesh
    • Wanli YangBipul SinhaAmit Ganesh
    • G06F7/00
    • G06F17/30557Y10S707/99952
    • Techniques are provided for providing mappings between logical time values and real time values in a multinode system. The techniques include, if a first event occurs, then writing an LTV-to-RTV mapping to a non-volatile data structure. If a second event occurs, then a check is performed to determine whether any of the LTV-to-RTV mappings in the volatile data structure are newer than all LTV-to-RTV mappings in a non-volatile data structure. If there are newer mappings in the volatile data structure, then one or more LTV-to-RTV mappings are written to the non-volatile data structure based on those “newer” LTV-to-RTV mappings from the volatile data structure. Upon receiving a request an LTV for a particular RTV, the particular RTV is determined based on information from an information source such as the volatile data structure or the non-volatile data structure.
    • 提供了在多节点系统中提供逻辑时间值和实时值之间的映射的技术。 这些技术包括,如果发生第一个事件,则将LTV-to-RTV映射写入非易失性数据结构。 如果发生第二个事件,则执行检查以确定易失性数据结构中的任何LTV到RTV映射是否比非易失性数据结构中的所有LTV到RTV映射更新。 如果在易失性数据结构中存在较新的映射,则基于来自易失性数据结构的“较新的”LTV到RTV映射,将一个或多个LTV到RTV映射写入非易失性数据结构。 在接收到用于特定RTV的LTV的请求时,基于来自诸如易失性数据结构或非易失性数据结构的信息源的信息确定特定RTV。
    • 8. 发明授权
    • Guaranteed undo retention
    • 保证撤销保留
    • US07437525B2
    • 2008-10-14
    • US10920874
    • 2004-08-17
    • Wanli YangBipul SinhaAmit Ganesh
    • Wanli YangBipul SinhaAmit Ganesh
    • G06F12/16
    • G06F17/30371Y10S707/99953
    • Techniques are provided for guaranteed undo retention. The techniques include a database server attempting to store undo information in undo storage. In order to store the undo information, the database server may overwrite expired undo records; write to empty undo extents; allocate new undo extents and write to the newly-allocated extents; or overwrite unexpired undo records that do not have guaranteed undo retention. If an undo record does not have guaranteed undo retention, then the undo record may be overwritten before the expiration time has elapsed. If no undo extent is empty or unallocated, and if all of the undo records are unexpired and have guaranteed undo retention, then the database system has, at least temporarily, run out of usable and reusable space and an error may be reported to an appropriate party.
    • 提供技术保证撤销保留。 这些技术包括尝试在撤销存储中存储撤消信息的数据库服务器。 为了存储undo信息,数据库服务器可能会覆盖失效的撤销记录; 写入空撤销区; 分配新的撤销范围并写入新分配的盘区; 或覆盖没有保证撤消保留的未到期撤消记录。 如果撤消记录没有保证撤消保留,则撤销记录可能会在到期时间过去之前被覆盖。 如果没有撤销范围是空的或未分配的,并且如果所有的撤消记录都未到期并且保证了撤销保留,则数据库系统至少暂时耗尽可用和可重用的空间,并且可能会将错误报告给适当的 派对。
    • 9. 发明授权
    • Providing mappings between logical time values and real time values
    • 提供逻辑时间值和实时值之间的映射
    • US07240065B2
    • 2007-07-03
    • US10856569
    • 2004-05-27
    • Wanli YangBipul SinhaAmit Ganesh
    • Wanli YangBipul SinhaAmit Ganesh
    • G06F17/00G06F7/00
    • G06F17/30551Y10S707/99952
    • Techniques are provided for providing mappings between logical time values and real time values for a database. The techniques include, if a first event related to the database occurs, writing an entry of a current LTV and a current RTV in a volatile mapping data structure; and if a second event related to the database occurs, writing one or more entries in a non-volatile mapping data structure based on information contained in the volatile mapping data structure. The techniques also include, once a request from a requestor to provide an LTV that is mapped to a particular RTV is received, determining the LTV for the particular RTV, based on the particular RTV and information from a source, wherein the source is one of the volatile mapping data structure and the non-volatile mapping data structure; and providing the LTV that is mapped to the particular RTV to the requestor.
    • 提供了提供数据库的逻辑时间值和实时值之间的映射的技术。 这些技术包括:如果发生与数据库相关的第一事件,则在易失性映射数据结构中写入当前LTV和当前RTV的条目; 并且如果发生与数据库有关的第二事件,则基于包含在易失性映射数据结构中的信息,在非易失性映射数据结构中写入一个或多个条目。 所述技术还包括,一旦来自请求者提供映射到特定RTV的LTV的请求被接收,基于特定RTV和来自源的信息确定特定RTV的LTV,其中源是 易失性映射数据结构和非易失性映射数据结构; 以及将映射到特定RTV的LTV提供给请求者。