【12c-ocp】1z0-062考試題庫最新考試真題-第28題
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QUESTION 28
In a recent Automatic Workload Repository (AWR) report for your database, you notice a high number of buffer busy waits. The database consists of locally managed tablespaces with free list managed segments.
On further investigation, you f ind that buffer busy waits is caused by contention on data blocks.
Which option would you consider first to decrease the wait event immediately?
A. Decreasing PCTUSED
B. Decreasing PCTFREE
C. Increasing the number of DBWN process
D. Using Automatic Segment Space Management (ASSM)
E. Increasing db_buffer_cache based on t he V$DB_CACHE_ADVICE recommendation
Correct Answer: B
Section: (none)
Explanation
(解析： 因為題目講的是數據塊沖突，沒有特別講明是段頭塊沖突，所有用答案 B 就可以解決問題。如果是段頭塊沖突，那么準確答案應該是 D
