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    • 71. 发明授权
    • Method and apparatus for undoing a data migration in a computer system
    • 用于撤销计算机系统中的数据迁移的方法和装置
    • US07093088B1
    • 2006-08-15
    • US10421252
    • 2003-04-23
    • Stephen J. ToddConor FoxDonagh BuckleyJohn Philip Bell, II
    • Stephen J. ToddConor FoxDonagh BuckleyJohn Philip Bell, II
    • G06F12/16
    • G06F11/1443G06F3/0607G06F3/0665G06F3/067G06F11/1415G06F11/2071Y10S707/99953
    • A method and apparatus for managing a migration of a data set from at least one first storage location to at least one second storage location, wherein read requests to the data set from at least one application program executing on a computer system initially are serviced from the at least one first storage location. The data set is copied from the at least one first storage location to the at least one second storage location, and then at least one aspect of the computer system is modified so that read requests to the data set are serviced from the at least one second storage location to achieve the migration. In one embodiment, the migration is subsequently undone by modifying the at least one aspect of the computer system so that read requests to the data set are again serviced from the at least one first storage location. In another embodiment, after the migration is performed, a determination is made as to whether to finalize the migration.
    • 一种用于管理从至少一个第一存储位置到至少一个第二存储位置的数据集的迁移的方法和装置,其中最初从在计算机系统上执行的至少一个应用程序对所述数据集的读取请求从 至少一个第一存储位置。 将数据集从至少一个第一存储位置复制到至少一个第二存储位置,然后对计算机系统的至少一个方面进行修改,以便从至少一个第二个服务到数据集的读取请求 存储位置实现迁移。 在一个实施例中,随后通过修改计算机系统的至少一个方面来撤销迁移,使得对数据集的读取请求再次从至少一个第一存储位置提供服务。 在另一个实施例中,在执行迁移之后,确定是否完成迁移。
    • 73. 发明授权
    • Replicating data across multiple copies of a table in a database system
    • 在数据库系统中的表的多个副本上复制数据
    • US09244996B2
    • 2016-01-26
    • US11771801
    • 2007-06-29
    • Serge BourbonnaisElizabeth B. HamelBruce G. LindsayStephen J. Todd
    • Serge BourbonnaisElizabeth B. HamelBruce G. LindsayStephen J. Todd
    • G06F17/30
    • G06F17/30578G06F17/30345Y10S707/99938
    • A mechanism for handling transaction messages in asynchronous data replication in a database system, in which the database system includes a source node and a target node, and each transaction message has information concerning a row change to a table copy at the source node. The mechanism determines whether a first transaction message has a dependency on a preceding non-completed transaction message. Responsive to the first transaction message having a dependency on the preceding non-completed transaction, the mechanism holds the first transaction message, completes the preceding non-completed transaction message including applying the row change associated with the preceding non-completed transaction message to the table copy at the target node, and responsive to completing the preceding non-completed transaction message, releases the first transaction message and applying the row change associated with the first transaction message to the table copy at the target node.
    • 用于在数据库系统中处理异步数据复制中的事务消息的机制,其中数据库系统包括源节点和目标节点,并且每个事务消息具有关于在源节点处的表副本的行更改的信息。 该机制确定第一事务消息是否具有对先前未完成的事务消息的依赖性。 响应于对先前未完成的事务具有依赖性的第一交易消息,该机制保持第一交易消息,完成前述未完成的交易消息,包括将与先前未完成的交易消息相关联的行变更应用于表 在目标节点处的副本,并且响应于完成上述未完成的交易消息,释放第一交易消息并将与第一交易消息相关联的行变更应用于目标节点处的表副本。
    • 75. 发明授权
    • Providing system management services
    • 提供系统管理服务
    • US08972361B1
    • 2015-03-03
    • US13166128
    • 2011-06-22
    • David S. ReinerStephen J. Todd
    • David S. ReinerStephen J. Todd
    • G06F17/30
    • G06F17/30306G06F17/30289G06F17/30312G06Q10/06
    • Methods and systems for use in providing system management services are disclosed. In at least one embodiment, a method and system may comprise receiving a management operation request at a recommendation service. Based on the management operation request and recommendation control policies, management operation recommendations associated with an information management system are determined.In at least one embodiment, a method and system may comprise receiving information associated with an information management system at a learning service. Based on the information, dimensions of a situational state space characterizing operating conditions of the information management system are determined. Best practices for at least one state of the situational state space are determined.
    • 公开了用于提供系统管理服务的方法和系统。 在至少一个实施例中,方法和系统可以包括在推荐服务处接收管理操作请求。 根据管理操作要求和推荐控制策略,确定与信息管理系统相关的管理操作建议。 在至少一个实施例中,方法和系统可以包括在学习服务处接收与信息管理系统相关联的信息。 基于该信息,确定表征信息管理系统的操作条件的情境状态空间的维度。 确定至少一个状态状态空间状态的最佳做法。
    • 77. 发明授权
    • Method, apparatus and computer program for retrieving data
    • 用于检索数据的方法,装置和计算机程序
    • US08818990B2
    • 2014-08-26
    • US10914705
    • 2004-08-09
    • Stephen J. HobsonStephen J. Todd
    • Stephen J. HobsonStephen J. Todd
    • G06F17/30
    • G06F17/30979
    • A data item is retrieved from a data store in a data processing system. The data processing system comprises an index, which at least partially indexes the data store, and also a partiality definition store. The partiality definition store indicates a part of the data store which is referenced by the partial index. A request is received for a data item from the data store and responsive to determining that the requested data item is not referenced by the partial index, the data store is searched by using the partiality definition store to avoid searching a part of the data store which is known to be indexed.
    • 从数据处理系统中的数据存储中检索数据项。 数据处理系统包括至少部分地索引数据存储的索引,以及偏倚定义存储。 偏好定义存储指示由部分索引引用的数据存储的一部分。 接收到来自数据存储器的数据项的请求,并响应于确定所请求的数据项未被部分索引引用,通过使用偏好定义存储来搜索数据存储,以避免搜索数据存储的一部分 已知索引。