View the Exhibit and examine the output. You execute the following RMAN command to perform the backup operation： RMAN> RUN { ALLOCATE CHANNEL c1 DEVICE TYPE disk MAXOPENFILES 8； BACKUP DATABASE FILESPERSET 4； } What is the multiplexing level in the preceding backup process？（）
- A、 4
- B、 8
- C、 7
- D、 0
正确答案:A
答案解析:有
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