1Z0-052多項(xiàng)選擇題每日一練(2020.04.03)

Examine the following output：
SQL> SELECT index_name，status FROM dba_indexes WHERE status=’UNUSABLE’； INDEX_NAME STATUS------------------------------ -----------
EIND UNUSABLE
Which two statements about the above index are true（）

You notice that the performance of the database has degraded because of frequent checkpoints. 
Which twoactions resolve the issue（）