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单项选择题 You issued the following statement to monitor the usage of the index：        SQL> ALTER INDEX SCOTT.EMP_IDX MONITORING USAGE；   Which view will you query to ensure that the index is being monitored？（）  

A、 INDEX_STATS

B、 DBA_INDEXES

C、 DBA_IND_COLUMNS

D、 V$OBJECT_USAGE

  • D

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