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公开(公告)号:US20120059798A1
公开(公告)日:2012-03-08
申请号:US12875004
申请日:2010-09-02
申请人: Pradeep Jnana Madhavarapu , Priyak Porwal , Vaibhav Kamra , Alexandru C. Chirica , Cristian Diaconu , Jun Fang , Srinivasmurthy P. Acharya
发明人: Pradeep Jnana Madhavarapu , Priyak Porwal , Vaibhav Kamra , Alexandru C. Chirica , Cristian Diaconu , Jun Fang , Srinivasmurthy P. Acharya
CPC分类号: G06F17/30174 , G06F11/1471 , G06F11/2038 , G06F11/2041 , G06F11/2097 , G06F2201/855
摘要: The present invention extends to methods, systems, and computer program products for mirroring file data. Generally, high availability and disaster recovery (“HADRON”) is achieved within a database management system by detecting which parts of a file have changed and sending the changed parts to secondaries. Adjacent or partially overlapping parts of a file can coalesce to form larger chunks of changed data. Coalescing reduces the overall number of chunks that are tracked.
摘要翻译: 本发明扩展到用于镜像文件数据的方法,系统和计算机程序产品。 通常,通过检测文件的哪些部分已更改并将更改后的部分发送给次要数据库管理系统,可实现高可用性和灾难恢复(“HADRON”)。 文件的相邻或部分重叠的部分可以合并以形成更大的更改数据块。 合并减少了跟踪的块的总数。
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公开(公告)号:US08401998B2
公开(公告)日:2013-03-19
申请号:US12875004
申请日:2010-09-02
申请人: Pradeep Jnana Madhavarapu , Priyank Porwal , Vaibhav Kamra , Alexandru C. Chirica , Cristian Diaconu , Jun Fang , Srinivasmurthy P. Acharya
发明人: Pradeep Jnana Madhavarapu , Priyank Porwal , Vaibhav Kamra , Alexandru C. Chirica , Cristian Diaconu , Jun Fang , Srinivasmurthy P. Acharya
IPC分类号: G06F17/30
CPC分类号: G06F17/30174 , G06F11/1471 , G06F11/2038 , G06F11/2041 , G06F11/2097 , G06F2201/855
摘要: The present invention extends to methods, systems, and computer program products for mirroring file data. Generally, high availability and disaster recovery (“HADRON”) is achieved within a database management system by detecting which parts of a file have changed and sending the changed parts to secondaries. Adjacent or partially overlapping parts of a file can coalesce to form larger chunks of changed data. Coalescing reduces the overall number of chunks that are tracked.
摘要翻译: 本发明扩展到用于镜像文件数据的方法,系统和计算机程序产品。 通常,通过检测文件的哪些部分已更改并将更改后的部分发送到次要数据库管理系统中,可实现高可用性和灾难恢复(HADRON)。 文件的相邻或部分重叠的部分可以合并以形成更大的更改数据块。 合并减少了跟踪的块的总数。
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公开(公告)号:US08655847B2
公开(公告)日:2014-02-18
申请号:US12856688
申请日:2010-08-16
申请人: Vaibhav Kamra , Pradeep Madhavarapu , Cristian Diaconu , Priyank Porwal , Jun Fang , Srini Acharya , Alexandru Chirica
发明人: Vaibhav Kamra , Pradeep Madhavarapu , Cristian Diaconu , Priyank Porwal , Jun Fang , Srini Acharya , Alexandru Chirica
CPC分类号: G06F17/30575
摘要: A method for mirroring one or more data changes from a first database server to one or more second database servers. The method includes intercepting one or more operations that make one or more changes to one or more data on the first database server. After intercepting these operations, the method merges the operations into one or more chunks, adds one or more log records having the chunks into a database log. The database log includes one or more database log blocks. The method then writes the database log blocks.
摘要翻译: 一种用于将一个或多个数据更改从第一数据库服务器镜像到一个或多个第二数据库服务器的方法。 该方法包括拦截对第一数据库服务器上的一个或多个数据进行一个或多个更改的一个或多个操作。 截取这些操作后,该方法将操作合并为一个或多个块,将具有该块的一个或多个日志记录添加到数据库日志中。 数据库日志包括一个或多个数据库日志块。 该方法然后写入数据库日志块。
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公开(公告)号:US20120041928A1
公开(公告)日:2012-02-16
申请号:US12856688
申请日:2010-08-16
申请人: Vaibhav Kamra , Pradeep Madhavarapu , Cristian Diaconu , Priyank Porwal , Jun Fang , Srimvasmurthy Acharya , Alexandru Chirica
发明人: Vaibhav Kamra , Pradeep Madhavarapu , Cristian Diaconu , Priyank Porwal , Jun Fang , Srimvasmurthy Acharya , Alexandru Chirica
CPC分类号: G06F17/30575
摘要: A method for mirroring one or more data changes from a first database server to one or more second database servers. The method includes intercepting one or more operations that make one or more changes to one or more data on the first database server. After intercepting these operations, the method merges the operations into one or more chunks, adds one or more log records having the chunks into a database log. The database log includes one or more database log blocks. The method then writes the database log blocks.
摘要翻译: 一种用于将一个或多个数据更改从第一数据库服务器镜像到一个或多个第二数据库服务器的方法。 该方法包括拦截对第一数据库服务器上的一个或多个数据进行一个或多个更改的一个或多个操作。 截取这些操作后,该方法将操作合并为一个或多个块,将具有该块的一个或多个日志记录添加到数据库日志中。 数据库日志包括一个或多个数据库日志块。 该方法然后写入数据库日志块。
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公开(公告)号:US20110282850A1
公开(公告)日:2011-11-17
申请号:US12777272
申请日:2010-05-11
申请人: Vaibhav Kamra , Pradeep Madhavarapu , Cristian Diaconu , Jun Fang , Srini Acharya , Michael Warmington , Maciej Plaza , Artem Oks , Sankhyayan Debnath
发明人: Vaibhav Kamra , Pradeep Madhavarapu , Cristian Diaconu , Jun Fang , Srini Acharya , Michael Warmington , Maciej Plaza , Artem Oks , Sankhyayan Debnath
IPC分类号: G06F17/30
CPC分类号: G06F16/2343 , G06F16/1774
摘要: A database management system having a database component, which includes a lock manager, and a filesystem component. The filesystem component is configured to: generate a mapping between one or more filesystem access modes, one or more filesystem sharing modes and one or more database locks, receive a request from a filesystem stack to perform one or more actions on data in a database, identify a filesystem access mode and a filesystem share mode of the request, determine which one of the database locks corresponds to the filesystem access mode and the filesystem share mode of the request based on the mapping, and receive a notification lock on the data from the lock manager when no other database locks conflict with the notification lock, wherein the notification lock corresponds to the one of the database locks. After receiving the notification lock on the data, the lock manager is configured to send a notification to the filesystem component when a subsequent request from a database stack includes accessing the data.
摘要翻译: 具有包括锁管理器和文件系统组件的数据库组件的数据库管理系统。 所述文件系统组件被配置为:生成一个或多个文件系统访问模式,一个或多个文件系统共享模式和一个或多个数据库锁之间的映射,从文件系统栈接收对数据库中的数据执行一个或多个动作的请求, 识别请求的文件系统访问模式和文件系统共享模式,基于映射确定数据库锁中的哪一个对应于文件系统访问模式和请求的文件系统共享模式,并且接收来自 当没有其他数据库锁与通知锁冲突时,锁管理器,其中通知锁对应于数据库锁之一。 在收到关于数据的通知锁定之后,锁管理器被配置为当来自数据库堆栈的后续请求包括访问数据时向文件系统组件发送通知。
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公开(公告)号:US07958167B2
公开(公告)日:2011-06-07
申请号:US12042571
申请日:2008-03-05
IPC分类号: G06F17/30
CPC分类号: G06F17/30227 , G06F17/30233
摘要: The claimed subject matter provides a system and/or a method that extends transactional guarantees to unstructured data in a file system. A database engine, configured to retain structured data, can reserve a portion of the file system to store unstructured data to be managed by the database engine. A kernel component can associate a transaction with at least one stream that corresponds to the reserved portion of the file system. The association enables transaction based access to the reserved portion of the file system managed by the database engine.
摘要翻译: 所要求保护的主题提供了一种将事务保证扩展到文件系统中的非结构化数据的系统和/或方法。 配置为保留结构化数据的数据库引擎可以保留文件系统的一部分来存储要由数据库引擎管理的非结构化数据。 内核组件可以将事务与对应于文件系统的保留部分的至少一个流关联。 该关联使得基于事务的访问由数据库引擎管理的文件系统的保留部分。
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公开(公告)号:US20090228429A1
公开(公告)日:2009-09-10
申请号:US12042571
申请日:2008-03-05
CPC分类号: G06F17/30227 , G06F17/30233
摘要: The claimed subject matter provides a system and/or a method that extends transactional guarantees to unstructured data in a file system. A database engine, configured to retain structured data, can reserve a portion of the file system to store unstructured data to be managed by the database engine. A kernel component can associate a transaction with at least one stream that corresponds to the reserved portion of the file system. The association enables transaction based access to the reserved portion of the file system managed by the database engine.
摘要翻译: 所要求保护的主题提供了一种将事务保证扩展到文件系统中的非结构化数据的系统和/或方法。 配置为保留结构化数据的数据库引擎可以保留文件系统的一部分来存储要由数据库引擎管理的非结构化数据。 内核组件可以将事务与对应于文件系统的保留部分的至少一个流关联。 该关联使得基于事务的访问由数据库引擎管理的文件系统的保留部分。
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