多项选择题
A. Testing the backup and recovery procedures
B. Testing the upgrade of an Oracle database to a new release
C. Testing the effect of an application changes on database performance
D. Continuously updating archive log files from the target database to support failover
单项选择题 Examine the CREATE DISKGROUP command used to create a disk group: SQL> CREATE DISKGROUP misc EXTERNAL REDUNDANCY DISK ORCL: FRA3 NAME misc1, ORCL: FRA4 NAME misc2; In which situation would you use this method of disk group creation?（）
单项选择题 Inwhichcasesisreferencepartitioningeffectiveinenhancingperformance？（）
单项选择题 You executed the following commands in a database session: What could have caused the recycle bin to clean up?（）