You execute the following command to change the requirement:

SQL> ALTER FLASHBACK ARCHIVE fdal MODIFY RETENTION 2 YEAR;

What is the outcome?

1.    FLASHBACK TABLE customers TO TIMESTAMP TO_TIMESTAMP('2013-02-04 09:30:00', 'YYYY- MM-DD HH:MI:SS');

2.    SELECT * FROM customers AS OF SCN 123456;

3.    FLASHBACK TABLE customers TO BEFORE DROP;

4.    FLASHBACK DATABASE TO TIMESTAMP TO_TIMESTAMP('2013-02-04 09:30:00', 'YYYY-MM-DD HH:MI:SS');

5.    SELECT * FROM customers VERSIONS BETWEEN SCN 123456 AND 123999;

6.    ALTER TABLE customers FLASHBACK ARCHIVE;

Which set of statements depends on the availability of relevant undo data in the undo tablespace?

You notice performance degradation in your production Oracle 12c database. You want to know what caused this performance difference. Which method or feature should you use?

Which two statements are true about the dependent objects of the CUSTOMERS table?