656.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
正确答案是C