单选题Which statement is true regarding RMAN components？（）AEach target database requires its own recover catalog. BRMAN scripts can be stored in the recovery catalog or the target control file. CA channel is a stream of data to a device type and corresponds to one server session. DThe RMAN executable interprets sever session commands and establishes connections to the target database.
单选题
Which statement is true regarding RMAN components？（）
A
Each target database requires its own recover catalog.
B
RMAN scripts can be stored in the recovery catalog or the target control file.
C
A channel is a stream of data to a device type and corresponds to one server session.
D
The RMAN executable interprets sever session commands and establishes connections to the target database.
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