OCP-1Z0-053-200题-185题-44

QUESTION 185

You have a very large table that your users access frequently. Which of the following advisors will recommend

any indexes to improve the performance of queries against this table?

A. The Automatic Memory Manager (AMM)

B. The SQL Tuning Advisor

C. The Segment Advisor

D. The SQL Access Advisor

Answer: D

同44题：http://blog.csdn.net/rlhua/article/details/13504185

Explanation/Reference:

Section: Managing Database Performance & Tuning

The SQL Access Advisor analyzes all SQL running during a given time period and recommends indexes and

materialized views to improve the overall performance of the database.

A is incorrect because there is no such advisor as the Automatic Memory Manager. B is incorrect because the

SQL Tuning Advisor looks only at a single SQL statement and provides recommendations. C is incorrect

because the Segment Advisor recommends segment shrinkwhen table and index segments are heavily

fragmented.