【2019】OCP考試062題庫新出現的考題-第41題
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我要咨詢2018年的時候,OCP 11g考試題庫大更新,052 053出現了很多新題,
2019年,11g即將停考的前期,Oracle又出現了一次大變動,12c出現了很多新題,比如062 063題庫大更新
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41題、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表的空間,因為要涉及到行的移動,所以要先把行移動功能打開。)
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