OCP-1Z0-053-V12.02-407题

407.Which of the following is a potential performance tuning recommendation from the SQL Access

Advisor?

A. Create new indexes.

B. Modify existing indexes.

C. Implement partitioning on a nonpartitioned table.

D. Create materialized views.

E. All of the above

Answer: E

答案解析：

参考：http://docs.oracle.com/cd/E11882_01/server.112/e41573/advisor.htm#PFGRF94876

Using SQL Access Advisor in Enterprise Manager or API, you can do the following:

• Recommend materialized views and indexes based on collected, user-supplied, or hypothetical workload information.

• Recommend partitioning of tables, indexes, and materialized views.

• Mark, update, and remove recommendations.

In addition, you can use SQL Access Advisor API to do the following:

• Perform a quick tune using a single SQL statement.

• Show how to make a materialized view fast refreshable.

• Show how to change a materialized view so that general query rewrite is possible.