Examine this syntax which allocates channels during a parallel image copy： RMAN> CONFIGURE DEVICE TYPE disk parallelism 4： 2> COPY 3> datafile 1 TO ‘/BACKUP/datafile1.dbf’， 4> datafile 2 TO ‘/BACKUP/datafile2.dbf’， 5> datafile 3 TO ‘/BACKUP/datafile3.dbf； RMAN>COPY 2> datafile 4 TO ‘/BACKUP/datafile4.dbf’； How many channels are used？（）<br>A:0<br>B:1<br>C:3<br>D:4

Examine this syntax which allocates channels during a parallel image copy： RMAN> CONFIGURE DEVICE TYPE disk parallelism 4： 2> COPY 3> datafile 1 TO ‘/BACKUP/datafile1.dbf’， 4> datafile 2 TO ‘/BACKUP/datafile2.dbf’， 5> datafile 3 TO ‘/BACKUP/datafile3.dbf； RMAN>COPY 2> datafile 4 TO ‘/BACKUP/datafile4.dbf’； How many channels are used？（）
A:0
B:1
C:3
D:4

出自：Oracle认证

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