41题、choose one
Examine the details of the uncompressed, non-partitioned heap table CITIES.
Name Null? Type
CITYID NOT NULL NUMBER (4)
CITY_NAME VARCHAR2 (50)
Examine the command:
SQL>ALTER TABLE cities SHRINK SPACE COMPACT;
What must you do before executing it?
A) Ensure there are no pending transactions on the table.
B) Disable all indexes on the table .
C) Ensure free space that is approximately equal to the space used by the table should be available.
D) Enable row movement is enabled.
Answer：D
(解析：想要shrik表的空间，因为要涉及到行的移动，所以要先把行移动功能打开。来自3组：1015267481)