ocp-498

QUESTION NO: 498？

View the Exhibit for some of the parameter settings. You start a session and issue the following

command:

SQL>CREATE INDEX emp_ename ON emp(ename) TABLESPACE users INVISIBLE;

What is the outcome of the above command?

A. The index is not used by the optimizer but is maintained during DML operations.

B. The index is not used by the optimizer and is not maintained during DML operations.

C. The index is used by the optimizer only if a hint is specified in the query statement and is maintained during

DML operations.

D. The index is used by the optimizer only if a hint is specified in the query statement but is not maintained

during DML operations.

Answer: A

查看的图表的一些参数设置。你启动一个会话，并发出以下命令：

上述命令的结果是什么？

A.优化器不使用索引，但在DML操作期间维护。 （第三行值为假）