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1.
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What does the buffer cache hit ratio tell you?
Please select the best answer.
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A.
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The relative number of times that the buffer cache hit the size limit that you specified
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B.
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The relative number of times that a user executed a query that accessed the buffer cache
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C.
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The relative number of times that a needed database block was found to be in memory
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D.
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The relative number of times that an SQL query was able to fit entirely within the cache
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