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    • 11. 发明授权
    • Method and system to avoid space bloating during run-time compression
    • 方法和系统,以避免运行时压缩期间的空间膨胀
    • US08965857B2
    • 2015-02-24
    • US13730207
    • 2012-12-28
    • Panfeng ZhouKatsunori TeradaYanhong Wang
    • Panfeng ZhouKatsunori TeradaYanhong Wang
    • G06F7/00G06F17/30
    • G06F17/30312
    • Methods, systems, and computer program products are provided to manage a database system. The method includes locking during a database system idle time access by the database system to a data page of a data allocation unit, compressing during the database system idle time a data stored in the locked data page, and recording during the database system idle time an indication that the compressed and locked data page includes free storage space, wherein unlocked data pages of the data allocation unit are accessible by the database system during the compressing of the data stored in the locked data page. Thus, the data page may be compressed during idle time and the space freed therein may be used during a subsequent run time without the need for a reorganization of the data pages within the corresponding table (as in, for example, operation of a reorg+rebuild SQL command combination).
    • 提供方法,系统和计算机程序产品来管理数据库系统。 该方法包括在数据库系统空闲时间期间锁定数据库系统对数据分配单元的数据页的访问,在数据库系统空闲时间期间压缩存储在锁定数据页中的数据,以及在数据库系统空闲时间期间的记录 指示压缩和锁定的数据页面包括空闲存储空间,其中在压缩存储在锁定的数据页面中的数据期间,数据库系统可访问数据分配单元的解锁数据页。 因此,可以在空闲时间期间压缩数据页面,并且可以在随后的运行时间期间释放其中的空间,而不需要重新组织相应表格内的数据页面(例如,在例如reorg + 重建SQL命令组合)。
    • 13. 发明申请
    • System and Methodology for Database Migration between Platforms
    • 平台之间数据库迁移的系统和方法
    • US20060184561A1
    • 2006-08-17
    • US10906652
    • 2005-02-28
    • Katsunori Terada
    • Katsunori Terada
    • G06F17/30
    • G06F17/303Y10S707/99943
    • A system and methodology for database migration between platforms is described. In one embodiment, for example, a method is described for migrating a database across platforms having different byte order formats (e.g., big-endian and little-endian), the method comprises steps of: when the database is loaded on a given platform, determining whether the database requires conversion to match the byte order format of the given platform; identifying particular portions of the database to be converted if the database is determined to require conversion; and converting the particular portions of the database to the byte order format of the given platform.
    • 描述了平台间数据库迁移的系统和方法。 在一个实施例中,例如,描述了用于在具有不同字节顺序格式(例如,大端和小端)的平台上迁移数据库的方法,所述方法包括以下步骤:当数据库在给定平台上加载时, 确定数据库是否需要转换以匹配给定平台的字节顺序格式; 如果确定数据库需要转换,则识别要转换的数据库的特定部分; 并将数据库的特定部分转换成给定平台的字节顺序格式。
    • 14. 发明授权
    • System and methodology for database migration between platforms
    • 平台间数据库迁移的系统和方法
    • US07293040B2
    • 2007-11-06
    • US10906652
    • 2005-02-28
    • Katsunori Terada
    • Katsunori Terada
    • G06F17/30
    • G06F17/303Y10S707/99943
    • A system and methodology for database migration between platforms is described. In one embodiment, for example, a method is described for migrating a database across platforms having different byte order formats (e.g., big-endian and little-endian), the method comprises steps of: when the database is loaded on a given platform, determining whether the database requires conversion to match the byte order format of the given platform; identifying particular portions of the database to be converted if the database is determined to require conversion; and converting the particular portions of the database to the byte order format of the given platform.
    • 描述了平台间数据库迁移的系统和方法。 在一个实施例中,例如,描述了用于在具有不同字节顺序格式(例如,大端和小端)的平台上迁移数据库的方法,所述方法包括以下步骤:当数据库在给定平台上加载时, 确定数据库是否需要转换以匹配给定平台的字节顺序格式; 如果确定数据库需要转换,则识别要转换的数据库的特定部分; 并将数据库的特定部分转换成给定平台的字节顺序格式。