Oracle Core pp 93-120 | Cite as

Caches and Copies

  • Jonathan Lewis


Caching means keeping copies of things that we expect to use soon, and keeping them close by so that we can access them quickly. Chapter 2 described how Oracle changes various types of data blocks (including undo blocks) and showed you a few of the structures that you can see stored in blocks, but it didn’t say anything about how Oracle manages to keep a selection of recently used or popular blocks in memory. Chapter 2 simply assumed that whenever we needed a block, the correct version of that block would be available.


Block Size Cache Size Data Cache Hash Chain Buffer Pool 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Jonathan Lewis 2011

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  • Jonathan Lewis

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