IT IS NOT POSSIBLE TO CHANGE THE SEGMENT SPACE MANAGEMENT METHOD AFTER CREATION

7. þ B. It is not possible to change the segment space management method after creation.ý A C, D, and E. A and C are wrong because a tablespace can be converted to local extent management or renamed at any time. D is wrong because a datafile can be resized downward—though only if the space to be freed up has not already been used. E is wrong because you cannot change the segment space management method without re-creating the tablespace.