你的数据库实例是使用spfile启动的，检查RMAN的配置设置。 CONFIGURE RETENTION POLICY TO REDUNDANCY 1; # default CONFIGURE BACKUP OPTIMIZATION OFF; # default CONFIGURE DEFAULT DEVICE TYPE TO DISK; # default CONFIGURE CONTROLFILE AUTOBACKUP ON; CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '%F'; # default You execute the command: RMAN> BACKUP AS COPY TABLESPACE TEST; Which three types of files are backed up by using this command? (Choose three.) 使用此命令备份哪三种类型的文件? ADF A data file(s) B online redo log files C PFILE D SPFILE E archived redo log files F control file