多项选择题
A. Size of the datafiles
B. Size of the tempfiles
C. Date of last backup for datafiles and tempfiles
D. Filenames for each datafile
E. Checkpoint SCN associated with the last RMAN backup
单项选择题 Whywouldyouexecutethereportobsoletecommand？（）
单项选择题 Whatistheresultofthiscommand？（）RMAN>Reportneedbackupdays3；
单项选择题 What does the output on this report indicate？（） RMAN> report need backup； RMAN retention policy will be applied to the command RMAN retention policy is set to redundancy 1 Report of files with less than 1 redundant backups File #bkps Name 5 0 C：\ORACLE\ORADATA\ORCL\MY_DATA_01.DBF