Three extents can be seen in this table.

可以看到，该表中有三个区段。

Another solution is to create smaller inode extents.

另一种解决方案是创建较小的inode区段。

Extents can be checked and verified for each dbspace.

可以检查每个dbspace的区段。

Reduce the number of extents of the table or index space.

缩小表或索引空间的规模。

Log file extents can be specified as primary or secondary.

日志文件扩展可以指定为主扩展或次扩展。

This indicates that the sales table contains three extents.

这指出了销售表包含三个区段。

The extents of the viewport can be anything you want them to be.

viewport 的扩展可以是您希望的任何东西。

The Extents tab lists all the extents associated with the given dbspace.

Extents 选项卡列出与给定的 dbspace 相关联的所有区段。

The parameter zsecondary is used to allocate fixed secondary extents.

zsecondary参数用于分配固定的辅助extent。

There is, however, no guarantee that extents themselves are also contiguous.

然而，无法保证区段本身也是连续的。

However, the REPACK option does not necessarily reduce the number of extents.

然而，REPACK选项不一定减少盘区数量。

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。

In this case, you'll call the volume group oraclevg and allocate 256 4-MG extents.

在这里，把卷组命名为 oraclevg 并分配 256 个 4 mg 的区段。

Given this behaviour ensure that there are a reasonable number of secondary extents.

此行为可确保有合理数量的次扩展。

If tables have too many extents, it is very likely that those extents are interleaved.

如果表拥有太多区段，那些区段就很可能是交错的。

There are two problems with tables that have lots of extents, or at least there used to be.

那些有很多盘区、或者至少曾经有过的表，存在两个问题。

Behind the scenes, the LVM system allocates storage in equal-sized "chunks", called extents.

在幕后，LVM系统以大小相等的“块”(称为“范围”)为单位分配存储量。

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。

Modify the entry for LogPrimaryFiles to the required value to change the number of primary extents.

将LogPrimaryFiles条目修改为所需的值，以更改主扩展的数量。

10 primary extents and 10 secondary extents for the log specified with the -lp 10 and -ls 10 flags.

使用- lp 10和- ls 10标志为日志指定10个主扩展和10个次扩展。

The number of extents needed depends on the amount of data to be logged and the size of each extent.

所需的扩展数量取决于要记录的数据量和每个扩展的大小。

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。

You can also specify the size of the first extent and of subsequent extents when dbspaces are created

创建 dbspace 时也可以指定第一个扩展区和后续扩展区的大小

Ideally there is a large enough contiguous block of storage to cover all the extents in the partition.

理想情况下，存在一个足够大的连续存储块来涵盖分区中的全部区段。

When using linear logging on the other hand log file extents will be continually allocated as required.

另一方面，使用线性日志记录时，将根据需要继续分配日志文件扩展。

Secondary log file extents are allocated dynamically by the queue manager when the primary files are exhausted.

次日志文件扩展由队列管理器在主文件耗尽的情况下动态分配。

For instance: does a large number of extents for a table space really have a measurable negative performance impact?

例如：大范围的表空间是否具有可衡量的负面的性能影响？

Ext4 replaces ext3's mechanism with extents to improve allocation and support a more efficient storage structure.

ext4使用区段取代ext3的机制，从而改善了空间的分配，并且支持更加高效的存储结构。

Otherwise, its data or keys will be scattered throughout the extents that have been occupied by the table or index.

否则，其数据或键将分散在该表或索引所占用的所有区段中。

Use the TBLTBLFIRST and TBLTBLNEXT configuration parameters to specify the size of the extents in the root dbspace.

使用TBLTBLFIRST和TBLTBLNEXT配置参数指定根dbspace中扩展区的大小。