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公开(公告)号：EP2521037B1
公开(公告)日：2018-06-27
申请号：EP12178892.1
申请日：2005-01-12
Applicant: ORACLE INTERNATIONAL CORPORATION
Inventor： Chandrasekaran, Sashikanth , Kehoe, William F.
CPC classification number: G06F11/2079 , G06F11/1471 , G06F11/1474 , G06F11/2058 , G06F11/2069 , G06F11/2071 , G06F2201/80
Abstract: A method for mirroring data between a plurality of sites comprises: maintaining, at a first site of the plurality of sites, a record that identifies which transactions that have been executed at the first site have had their redo information replicated to the other sites of the plurality of sites; determining a priority value associated with a transaction that is to be performed at the first site, wherein the transaction specifies a modification to a data block; if the priority value is a first value in a set of possible values, then committing the transaction only after the record indicates that redo information associated with the transaction has been replicated to the other sites of the plurality of sites; and if the priority value is a second value in said set of possible values, then committing the transaction even though the record does not indicate that redo information associated with the transaction has been replicated to the other sites of the plurality of sites. The invention also comprises a machine-readable medium.
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公开(公告)号：EP2521037A2
公开(公告)日：2012-11-07
申请号：EP12178892.1
申请日：2005-01-12
Applicant: ORACLE INTERNATIONAL CORPORATION
Inventor： Chandrasekaran, Sashikanth , Kehoe, William F.
CPC classification number: G06F11/2079 , G06F11/1471 , G06F11/1474 , G06F11/2058 , G06F11/2069 , G06F11/2071 , G06F2201/80
Abstract: A method for mirroring data between a plurality of sites comprises: maintaining, at a first site of the plurality of sites, a record that identifies which transactions that have been executed at the first site have had their redo information replicated to the other sites of the plurality of sites; determining a priority value associated with a transaction that is to be performed at the first site, wherein the transaction specifies a modification to a data block; if the priority value is a first value in a set of possible values, then committing the transaction only after the record indicates that redo information associated with the transaction has been replicated to the other sites of the plurality of sites; and if the priority value is a second value in said set of possible values, then committing the transaction even though the record does not indicate that redo information associated with the transaction has been replicated to the other sites of the plurality of sites. The invention also comprises a machine-readable medium.
Abstract translation: 一种用于在多个站点之间镜像数据的方法包括：在多个站点的第一站点处，保存识别在第一站点已经执行的哪些事务已经将重做信息复制到其他站点的记录的记录 多个地点; 确定与在所述第一站点执行的事务相关联的优先级值，其中所述事务指定对数据块的修改; 如果所述优先级值是一组可能值中的第一值，则仅在所述记录指示与所述事务相关联的重做信息已被复制到所述多个站点中的其他站点之后提交所述事务; 并且如果所述优先级值是所述可能值集合中的第二值，则即使所述记录未指示与所述事务相关联的重做信息已被复制到所述多个站点中的其他站点，则提交所述事务。 本发明还包括机器可读介质。
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公开(公告)号：EP2521037A3
公开(公告)日：2013-01-23
申请号：EP12178892.1
申请日：2005-01-12
Applicant: ORACLE INTERNATIONAL CORPORATION
Inventor： Chandrasekaran, Sashikanth , Kehoe, William F.
CPC classification number: G06F11/2079 , G06F11/1471 , G06F11/1474 , G06F11/2058 , G06F11/2069 , G06F11/2071 , G06F2201/80
Abstract: A method for mirroring data between a plurality of sites comprises: maintaining, at a first site of the plurality of sites, a record that identifies which transactions that have been executed at the first site have had their redo information replicated to the other sites of the plurality of sites; determining a priority value associated with a transaction that is to be performed at the first site, wherein the transaction specifies a modification to a data block; if the priority value is a first value in a set of possible values, then committing the transaction only after the record indicates that redo information associated with the transaction has been replicated to the other sites of the plurality of sites; and if the priority value is a second value in said set of possible values, then committing the transaction even though the record does not indicate that redo information associated with the transaction has been replicated to the other sites of the plurality of sites. The invention also comprises a machine-readable medium.
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