单项选择题
A. When two-way disk mirroring is required for the allocation units
B. When three-way disk mirroring is required for the allocation units
C. When using hardware mirroring or RAID
D. When disk mirroring is required for the Automatic Storage Management (ASM) disks
单项选择题 You executed the following commands in a database session: What could have caused the recycle bin to clean up?（）
单项选择题 View the exhibit and examine the TRANS tables storage information. After a massive delete operation, you executed the following statement to shrink the TRANS table: SQL> ALTER TABLE trans SHRINK SPACE CASCADE; Which statement describes the outcome of the command?（）
多项选择题 Which two statements are true about a job chain?（）
