Explanation:
A server process controls the RMAN channel.
Incorrect Answers:
1: A user process does not control the RMAN channel.
3: An archive process (ARCH) has nothing to do with control of RMAN channel.
4: A database writer process (DBWR0) does not control the RMAN channel.
Oracle 8, DBA Certification Exam Guide, Jason S. Couchman, p. 623-624
Chapter 13: Using Recovery Manager for backups

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