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单项选择题 Examine the following RMAN command：   RMAN> CONFIGURE ENCRYPTION FOR DATABASE ON； RMAN> BACKUP DATABASE PLUS ARCHIVELOG；   Which prerequisite must be met before accomplishing the backup？（）

A、 Provide a password for the encryption

B、 Set up an Oracle wallet for the encryption

C、 No setup is required as it is a default encryption method

D、 Both Oracle wallet and password must be set up for the encryption

  • B

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