单项选择题
A. a cumulative level 1 backup
B. a differential level 1 backup
C. a full backup
D. a whole backup
单项选择题 Which statement about using RMAN stored scripts is true?（）
多项选择题 You have enabled resumable space allocation in your database by setting the RESUMABLE_TIMEOUTparameter set to a nonzero value.Which three statements about resumable space allocation are true? （）(Choose three.)
单项选择题 You executed the following command in the Recovery Manager （RMAN）： RMAN> REPORT NEED BACKUP days 3； What is the output of this command？（）