最重要的更改是处理分页问题，即使系统拥有足够的空闲内存，数据库服务器频繁地交换出计算性页面也可能导致这个问题。
The most important changes were made to address paging issues, where database servers frequently page out computational pages, even though the system has enough free memory.
尽管缓存可能在一定程度上减轻这种性能影响，但如果使用特定大小的数据块检索数据来支持用户界面分页，则可能出现另一个问题。
Although caching might alleviate this to some degree, another problem might arise if data is retrieved in blocks of a certain size to support user interface pagination.
出于性能的考虑，或者在诊断您怀疑可能与交换空间有关的问题时，您通常需要内存和分页使用情况的更加交互式的视图。
For performance reasons or when diagnosing a problem that you suspect might be swap space related, you often need a more interactive view of the memory and paging usage.
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