Self-contained partial database backups
    1.
    发明授权
    Self-contained partial database backups 有权
    自包含的部分数据库备份

    公开(公告)号:US08103632B2

    公开(公告)日:2012-01-24

    申请号:US11113161

    申请日:2005-04-22

    IPC分类号: G06F7/00

    摘要: Methods and computer readable media for restoring a database. In a method, a backup of a subset of a database is created, where the subset includes a filegroup and database metadata describing the filegroup. The database is then restored using the database subset. In a computer-readable medium, a first data field contains data representing a database subset having at least one of a plurality of filegroups. A second data field contains data representing database metadata that describes the filegroup. In another method, archived database metadata and an archived filegroup that is one of a plurality of filegroups is accessed, and the filegroup is brought online using the database metadata.

    摘要翻译: 用于恢复数据库的方法和计算机可读介质。 在一种方法中,创建数据库子集的备份,其中子集包括描述文件组的文件组和数据库元数据。 然后使用数据库子集恢复数据库。 在计算机可读介质中,第一数据字段包含表示具有多个文件组中的至少一个的数据库子集的数据。 第二个数据字段包含表示描述文件组的数据库元数据的数据。 在另一种方法中,访问归档数据库元数据和作为多个文件组之一的归档文件组,并使用数据库元数据将文件组联机。

    Online page restore from a database mirror
    2.
    发明授权
    Online page restore from a database mirror 有权
    从数据库镜像恢复联机页面

    公开(公告)号:US07636741B2

    公开(公告)日:2009-12-22

    申请号:US11204593

    申请日:2005-08-15

    IPC分类号: G06F17/30

    摘要: A set of servers takes advantage of the existing data redundancy of a mirrored database to restore page corruptions. The page restore may occur with none of the time and/or administration costs of a restore from backup media and without the data loss associated with repair. Online page restore from a database mirror can be initiated and performed by the computer system automatically upon corruption detection. An entire file or database instead of an individual page or set(s) of pages can be restored. The mechanism can be used both to restore corrupt pages on the principal server from a mirror, or corrupt pages on a mirror from the principal server. Online page restore from a database mirror enables page data recovery without the need to find/load/scan through and apply data and log backups, allowing efficient and potentially automatic data recovery.

    摘要翻译: 一组服务器利用镜像数据库的现有数据冗余来恢复页面损坏。 页面恢复可能会发生,没有时间和/或管理成本从备份介质还原,没有数据丢失与维修相关联。 数据库镜像的在线页面恢复可以由计算机系统自动启动并进行破坏检测。 可以恢复整个文件或数据库,而不是单个页面或一组页面。 该机制可用于从镜像恢复主服务器上的损坏页面,或者从主服务器损坏镜像上的页面。 数据库镜像的在线页面还原使页面数据恢复无需查找/加载/扫描并应用数据和日志备份,从而实现高效和可能的自动数据恢复。

    Backup and restoration of data in an electronic database
    3.
    发明授权
    Backup and restoration of data in an electronic database 有权
    在电子数据库中备份和恢复数据

    公开(公告)号:US06651077B1

    公开(公告)日:2003-11-18

    申请号:US09671496

    申请日:2000-09-27

    IPC分类号: G06F1730

    摘要: To avoid possible data corruption resulting from restoring data to a database from a backup set that is not valid for the database, attempted restore operations are intercepted before they are performed. The backup set is examined to determine whether it was created from the same recovery fork on which the database resides or an descendant of that recovery fork. The backup set is only allowed to be applied to the database if the backup set was created from one of these recovery forks. If not, the backup set is not allowed to be applied to the database.

    摘要翻译: 为避免从数据库无效的备份集将数据恢复到数据库可能导致的数据损坏,尝试的还原操作在执行之前被截取。 检查备份集以确定它是从数据库所在的相同的恢复分支或该恢复分支的后代创建的。 如果备份集是从其中一个恢复分支中创建的,则备份集仅允许应用于数据库。 如果没有,则不允许将备份集应用于数据库。

    Self-contained partial database backups
    4.
    发明授权
    Self-contained partial database backups 有权
    自包含的部分数据库备份

    公开(公告)号:US08527464B2

    公开(公告)日:2013-09-03

    申请号:US13329694

    申请日:2011-12-19

    IPC分类号: G06F7/00 G06F11/14

    摘要: Methods and computer readable media for restoring a database. In a method, a backup of a subset of a database is created, where the subset includes a filegroup and database metadata describing the filegroup. The database is then restored using the database subset. In a computer-readable medium, a first data field contains data representing a database subset having at least one of a plurality of filegroups. A second data field contains data representing database metadata that describes the filegroup. In another method, archived database metadata and an archived filegroup that is one of a plurality of filegroups is accessed, and the filegroup is brought online using the database metadata.

    摘要翻译: 用于恢复数据库的方法和计算机可读介质。 在一种方法中,创建数据库子集的备份,其中子集包括描述文件组的文件组和数据库元数据。 然后使用数据库子集恢复数据库。 在计算机可读介质中,第一数据字段包含表示具有多个文件组中的至少一个的数据库子集的数据。 第二个数据字段包含表示描述文件组的数据库元数据的数据。 在另一种方法中,访问归档数据库元数据和作为多个文件组之一的归档文件组,并使用数据库元数据将文件组联机。

    Self-Contained Partial Database Backups
    5.
    发明申请
    Self-Contained Partial Database Backups 有权
    自包含部分数据库备份

    公开(公告)号:US20120089573A1

    公开(公告)日:2012-04-12

    申请号:US13329694

    申请日:2011-12-19

    IPC分类号: G06F17/30

    摘要: Methods and computer readable media for restoring a database. In a method, a backup of a subset of a database is created, where the subset includes a filegroup and database metadata describing the filegroup. The database is then restored using the database subset. In a computer-readable medium, a first data field contains data representing a database subset having at least one of a plurality of filegroups. A second data field contains data representing database metadata that describes the filegroup. In another method, archived database metadata and an archived filegroup that is one of a plurality of filegroups is accessed, and the filegroup is brought online using the database metadata.

    摘要翻译: 用于恢复数据库的方法和计算机可读介质。 在一种方法中,创建数据库子集的备份,其中子集包括描述文件组的文件组和数据库元数据。 然后使用数据库子集恢复数据库。 在计算机可读介质中,第一数据字段包含表示具有多个文件组中的至少一个的数据库子集的数据。 第二个数据字段包含表示描述文件组的数据库元数据的数据。 在另一种方法中,访问归档数据库元数据和作为多个文件组之一的归档文件组,并使用数据库元数据将文件组联机。

    Page recovery using volume snapshots and logs
    6.
    发明授权
    Page recovery using volume snapshots and logs 有权
    使用卷快照和日志进行页面恢复

    公开(公告)号:US07814057B2

    公开(公告)日:2010-10-12

    申请号:US11099021

    申请日:2005-04-05

    IPC分类号: G06F7/00

    摘要: Systems and methods are disclosed that facilitate providing page-level database restore functionality upon detection of a corruption event. Updates to a data page in a database can trigger generation of a snapshot of the data page, and an update log can be maintained that stores information related to page updates. Subsequent snapshots can be generated at predetermined intervals and can trigger truncation of a log segment and initiation of a new log segment. Upon detection of page corruption, a most-recent uncorrupt snapshot of the corrupt page can be identified, copied to the location of the corrupt page in the database, and modified according to the log segment associated with the uncorrupt snapshot to make the page current as of the corrupting event, all of which can be performed to restore the database without having to take the database offline.

    摘要翻译: 公开了在检测到腐败事件时便于提供页面级数据库恢复功能的系统和方法。 对数据库中的数据页的更新可以触发数据页快照的生成,并且可以维护存储与页面更新相关的信息的更新日志。 随后的快照可以以预定的间隔生成并且可以触发日志段的截断和新的日志段的启动。 在检测到页面损坏时,可以识别损坏的页面的最新的不破坏的快照,将其复制到数据库中的损坏页面的位置,并根据与非破坏快照关联的日志段进行修改,以使页面当前为 的破坏事件,所有这些都可以执行以恢复数据库,而不必使数据库脱机。