extents

英 [ɪksˈtɛnts]

美 [ɪkˈstɛnts]

n.  程度; 限度; 大小; 面积; 范围
extent的复数

计算机

双语例句

• This indicates that the sales table contains three extents.
  这指出了销售表包含三个区段。
• Use oncheck-pt to check on the number of partition extents after defragmentation.
  可在碎片整理完成后，利用oncheck-pt来检查分区区段的数量。
• This feature checks the consistency and the corruption on data and extents, which is currently done through the oncheck utility.
  这个特性检查数据和区段的一致性和损坏，当前这是通过oncheck实用程序完成的。
• The second problem, of course, is that a table or an index with many highly active extents will suffer from performance degradation due to increased disk head movement and increased contention for head positioning with other objects in the database.
  当然，第二个问题是，有很多高度活跃的盘区的一个表或索引将遭遇性能降低，因为磁头移动的增加和磁头与数据库中其他对象的位置争用的增加。
• It also includes extents with multi-block and delayed block allocation for performance.
  它还包括多块和延迟块分配，以提升性能。
• These include pages allocations from both mixed extents and uniform extents.
  这些页包括从混合区和统一区中分配的页。
• For maximum efficiency, frequently accessed tables should have as few extents as possible.
  为达到效率最大化，频繁访问的表区段应当越少越好。
• The following illustration shows the sequence of pages used by the database engine to allocate and manage extents.
  下图显示了数据库引擎用来分配和管理区的页顺序。
• When using circular logging log file extents are reused once they no longer contain active log data.
  使用循环日志记录时，当日志文件扩展不再包括活动数据日志时，会将其进行重新使用。
• The use of different fibers will affect all the selection criteria, although to different extents.
  使用不同的纤维原料会影响织物的各项性能，尽管影响的程度不同。