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View the Exhibit to examine the output produced by the following query at three different times sincethe database instance started and has experienced workloads of different capacities：  SQL> SELECT substr（component， 0， 10） COMP， current_size CS，user_specified_size USFROM v$memory_dynamic_componentsWHERE current_size!=0；  What do you infer from this（）
A:The database instance is running with manual PGA management.
B:The database instance is running with manual shared memory management.
C:The database instance has the MEMORY_TARGET value set to a nonzero value.
D:All sessions are connected to the database instance in dedicated mode， and no RMAN or parallelquery operations have been performed.

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出自：Oracle认证

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