单选题The BACKUP_TAPE_IO_SLAVES parameter is set to FALSE for the database instance. Which statement is true while performing a tape backup in an RMAN session?（）AThe tape I/O performed is asynchronousBThe tape buffer is allocated from the System Global Area (SGA)CThe tape buffer is allocated from the Program Global Area (PGA)DOracle I/O uses an interrupt mechanism to determine when each I/O completes
单选题
The BACKUP_TAPE_IO_SLAVES parameter is set to FALSE for the database instance. Which statement is true while performing a tape backup in an RMAN session?（）
A
The tape I/O performed is asynchronous
B
The tape buffer is allocated from the System Global Area (SGA)
C
The tape buffer is allocated from the Program Global Area (PGA)
D
Oracle I/O uses an interrupt mechanism to determine when each I/O completes
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