Explanation:
To avoid redo information generating you can use NOLOGGING mode in SQL statements, use direct path loading without archiving and direct path loading with archiving using NOLOGGING mode.
Incorrect Answers:

2: There is no direct load UPDATE to NOLOGGING mode in Oracle.
5: There is no NOLOGGING initialization parameter in Oracle.
Oracle 8, DBA Certification Exam Guide, Jason S. Couchman, p. 873-876. Chapter 18: Tuning Memory and Operating System Use

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