orcl1, orcl2, and orcl3 are tnsnames that connect to predefined instances of a three- instance RAC database which uses ASM for shared storage.The database is in archivelog mode.Examine the Exhibit for the tnsnames.ora entries for orcl1, orcl2, and orcl3.You plan to execute the following RMAN commands to back up the database:RUN{ALLOCATE CHANNEL CH1 DEVICE TYPE DISK CONNECT 'user1/pwd1@orcl1';ALLOCATE CHANNEL CH2 DEVICE TYPE DISK CONNECT 'user2/pwd2@orcl2';ALLOCATE CHANNEL CH3 DEVICE TYPE DISK CONNECT 'user3/pwd3@orcl3';BACKUP DATABASE PLUS ARCHIVELOG; }What should be the database mode on each of the three instances for this backup to succeed?
Orcl1 Orcl2 And 1 (154.87 KiB) Viewed 133 times
A. The database can be either mounted or open on all three instances.
B. The database must be open on all three instances.
C. The database must be open on any one instance and mounted on the other two instances.
D. The database must be mounted on any one of the instances and the other instances will be mounted automatically.
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