Examine this command
SQL> ALTER TABLE ORDERS SHRINK SPACE COMPACT
Which two statements are true?
A.Queries and DML statements are allowed on ORDERs while the SHRINK is executing B.Dependent indexes become UNUSABLE C.The SHRINK operation causes rows to be moved to empty space starting toward the end of正确答案AD
The ORDERs segment D.The SHRINK operation causes rows to be moved to empty space starting from the beginning of
The ORDERs segment. E.Only queries are allowed on ORDERs while the SHRINK is executing F.The high-water mark(HWM)of ORDERs is adjusted