1Z0-024 Performance Tuning
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Note 2: 1Z0-024 Answers are not shown in demo questions.
Exhibits and Answers are only provided in the Full Version.
Demo Question 11.
What can you use the values in the GETS and GETMISSES columns of V$ROWCACHE to determine the hit ratio for?
A. Library cache.
B. Dictionary cache.
C. Entire shared pool.
D. Large objects such as PL/SQL packages.
Display Answer
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Answer: B
Explanation: The V$ROWCACHE view statistics is used to tune dictionary cache. You calculate the hit ratio
using the formula : sum (GETS - GETMISSES) / sum (GETS) * 100. An ideal hit ratio for
dictionary-cache activity is 99 percent or higher.
Incorrect
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