（单选题）
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 find that buffer busy waits is caused by contention on data blocks. Which option would you consider first to decrease the wait event immediately?（）
ADecreasing PCTUSED
BDecreasing PCTFREE
CIncreasing the number of DBWN process
DUsing Automatic Segment Space Management (ASSM)
EIncreasing db_buffer_cache based on the V$DB_CACHE_ADVICE recommendation
正确答案
答案解析
略
