1z0-043單項選擇題每日一練(2019.01.18)

來源：考試資料網(wǎng)

1 You have many users complaining about slow inserts into a large table. While investigating the reason， you find that the number of indexes on the table is high. You want to find out which indexes are not being used.
Which method would you follow to achieve this？（）

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2 You lost the index tablespace in your database. You are not able to use tablespace point-in-time recovery on the index tablespace. What could be the reason for this？（）

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3 In which scenario do you use the Flashback Database feature？（）

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4 While setting up the thresholds for tablespace space usage metrics for one of your tablespaces， you define the critical threshold as 60% and warning threshold as 75%. What would be the result of this setting？（）

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5 A data file became corrupted in your database due to bad sectors on the disk. Because of corruption， you lost all the important tables in that data file.
Which method would you use for recovery？（）

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