Explanation:
There are two benefits of making recovery operations parallel: minimizing down time and better utilization of system resources.
Incorrect Answers:
2: Oracle can recover in parallel even one data file.
3: This is not benefit of parallel recovery.
4: Parallel recovery does not improve the chances of database consistency.
Oracle 8, DBA Certification Exam Guide, Jason S. Couchman, p. 675-683
Chapter 14: Database Failure and Recovery

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