单项选择题
Examine the following command： ALTER DISKGROUP data MOUNT FORCE； In which scenario can you use the above command to mount the disk group？（）
A. when ASM disk goes offline B. when one or more ASM files are dropped C. when some disks in a disk group are offline D. when some disks in a failure group for a disk group are rebalancing
单项选择题 Whichstatementaboutrecoveringfromthelossofaredologgroupistrue？（）
单项选择题 You issue the following command on the RMAN prompt. REPORT NEED BACKUP DAYS 5； Which statement is true about executing this command？（）
单项选择题 What happens when you run the SQL Tuning Advisor with limited scope？（）
