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    • 3. 发明授权
    • Proactive space allocation in a database system
    • 在数据库系统中主动分配空间
    • US07716177B2
    • 2010-05-11
    • US11880917
    • 2007-07-24
    • Wei ZhangAmit GaneshSujatha MuthulingamNiloy Mukherjee
    • Wei ZhangAmit GaneshSujatha MuthulingamNiloy Mukherjee
    • G06F17/30
    • G06F17/30595G06F12/0223
    • A method and apparatus for proactively allocating space to a logical layer of a database is provided. Allocation of space to a logical layer of a database is an expensive operation that should be minimized. The allocation of space includes discovering free space in all the higher layers in the logical storage hierarchy. It also includes cross-domain system calls and cleansing disk-write operations. In prior approaches, the allocation processes were triggered on-demand, only a certain logical layer was discovered to be at full capacity when an insert-row operation was attempted. In one embodiment of the invention, space needs are statistically predicted based on prior rates of space consumption. The database server pre-allocates space as needed, based on the statistical predictions. Rates of consumption are examined periodically. Space is pre-allocated before any logical layer reaches full capacity by a combination of proactive background processes; foreground-triggered, background processes; and classic foreground allocation.
    • 提供了一种用于主动地将空间分配给数据库的逻辑层的方法和装置。 将空间分配到数据库的逻辑层是一个应该最小化的昂贵的操作。 空间分配包括发现逻辑存储层次结构中所有较高层的可用空间。 它还包括跨域系统调用和清理磁盘写入操作。 在先前的方法中,分配过程是按需触发的,当尝试插入行操作时,只发现某个逻辑层处于满载状态。 在本发明的一个实施例中,基于先前的空间消耗率来统计地预测空间需求。 数据库服务器根据统计预测,根据需要预分配空间。 定期检查消费量。 在任何逻辑层通过主动后台进程的组合达到满容量之前,预先分配空间; 前台触发,后台进程; 和经典的前景分配。
    • 5. 发明申请
    • Proactive space allocation in a database system
    • 在数据库系统中主动分配空间
    • US20090030956A1
    • 2009-01-29
    • US11880917
    • 2007-07-24
    • Wei ZhangAmit GaneshSujatha MuthulingamNiloy Mukherjee
    • Wei ZhangAmit GaneshSujatha MuthulingamNiloy Mukherjee
    • G06F12/00
    • G06F17/30595G06F12/0223
    • A method and apparatus for proactively allocating space to a logical layer of a database is provided. Allocation of space to a logical layer of a database is an expensive operation that should be minimized. The allocation of space includes discovering free space in all the higher layers in the logical storage hierarchy. It also includes cross-domain system calls and cleansing disk-write operations. In prior approaches, the allocation processes were triggered on-demand, only a certain logical layer was discovered to be at full capacity when an insert-row operation was attempted. In one embodiment of the invention, space needs are statistically predicted based on prior rates of space consumption. The database server pre-allocates space as needed, based on the statistical predictions. Rates of consumption are examined periodically. Space is pre-allocated before any logical layer reaches full capacity by a combination of proactive background processes; foreground-triggered, background processes; and classic foreground allocation.
    • 提供了一种用于主动地将空间分配给数据库的逻辑层的方法和装置。 将空间分配到数据库的逻辑层是一个应该最小化的昂贵的操作。 空间分配包括发现逻辑存储层次结构中所有较高层的可用空间。 它还包括跨域系统调用和清理磁盘写入操作。 在先前的方法中,分配过程是按需触发的,当尝试插入行操作时,只发现某个逻辑层处于满载状态。 在本发明的一个实施例中,基于先前的空间消耗率来统计地预测空间需求。 数据库服务器根据统计预测,根据需要预分配空间。 定期检查消费量。 在任何逻辑层通过主动后台进程的组合达到满容量之前预先分配空间; 前台触发,后台进程; 和经典的前景分配。