Explanation:
The alert log contains only information about placing table spaces in begin and end backup modes.
Incorrect Answers:
1: The alert log file does not show information about placing individual datafiles in begin and end backup modes, only about table spaces.
3: There are no open or close backup modes in Oracle.
4: The alert log file does not contain information about an operation system backup.
Oracle 8, DBA Certification Exam Guide, Jason S. Couchman, p. 588-590
Chapter 12: Overview of Backup and Recovery

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