（单选题）
Oracle9i offers the ability to monitor the dynamic use of the SGA through the DB_CACHE_ADVICE parameter. When this parameter is set to READY， what is its effect？ （）
AThe Advisory is on and will capture both CPU and memory overhead.
BThe Advisory is on but the memory for the Advisory is not allocated.
CThe Advisory is off and the memory for the Advisory is not allocated.
DThe Advisory is off but the memory for the Advisory remains allocated.
正确答案
答案解析
略
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