1z0-043單項選擇題每日一練(2019.01.08)

來源：考試資料網(wǎng)

1 Users are performing a large volume of inserts and deletes on the application tables in the APPS tablespace. You observe that there are several warning alerts being generated for the APPS tablespace space usage metrics. Currently， the warning threshold for the tablespace usage metrics is set to 70%. To make the generated alerts more useful as a problem identification tool， you want to reduce the frequency of alert generation for the tablespace usage metrics for the APPS tablespace. What should you do？（）

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2 You executed the following command in Recovery Manager （RMAN） against your Oracle 10g database：
RMAN> REPORT NEED BACKUP days 3;
What would be the output of this command？（）

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3 Your database is configured on non-ASM disk storage. You need to migrate your database to ASM disk storage. Which statement is true about migrating from non-ASM disk storage to ASM disk storage？（）

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4 You are employed as a DBA in an organization. You are informed that the record of EMP_NO 1000 is missing from the SCOTT.EMP table. You are required to identify the user who deleted the record， the SQL statement that will undo the deletion， and the transaction ID of the transaction that deleted the employee record. Which feature will you use to perform the tasks？（）

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5 Which background process sequentially writes Flashback Database data from the flashback buffer to the Flashback Database logs？（）

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