该Oracle rac节点的全局缓存服务(GCS)负责管理对这些数据块集的访问。

The Global Cache Service (GCS) of that Oracle rac node is responsible for managing access to these sets of data blocks.

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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.

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数据流以异步方式从一个块进入到另一个块当中，根据需要它通常在源或目标处进行缓存。

Data flows from one block to the next in an asynchronous fashion, often being buffered at the source or target until such time as it is needed.

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