When you perform a whole database backup wuth the command BACKUP DATABASE PLUS ARCHIVELOG, which database objects are included in the backup?(Choose the best answer.)
A. All datafiles and archived log files. The control file is included if you add the CONTROLFILE keyword, and the SPFILE is included if your configuration includes automatic backup of the SPFILE.
B. All datafiles and archived log files. The SPFILE is included if you add the SPFILE keyword, and the control file is included if your configuration includes automatic backup of the control file.
C. All datafiles and archived log files; after the operation successfully completes, the archived log file are automatically deleted.
D. All datafiles and archived log files only, regardless of the current RMAN settings.
Answer: B
A、错误，因为没有设置自动备份SPFILE的参数；
B、正确；
C、错误，需要明确指明删除归档日志，backup database plus archivelog delete all input；
D、错误，如果设 置了ControlFile自动备份；
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