chap15_5.html

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If the buffer cache hit ratio is too low, I could benefit by adding more database block buffers to the SGA. I don抰 want to add database block buffers without analyzing the hit ratio, however, because I may be unnecessarily committing memory that the operating system needs. How do I identify the database buffer cache hit ratio?<p><B>Technique</B><p>Whenever Oracle reads data from disk, it places that data into the database buffer cache so that it is available for future read requests generated by any database user. Data is 揳ged out

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