Oracle
1Z0-060 · Question #47
1Z0-060 Question #47: Real Exam Question with Answer & Explanation
Sign in or unlock 1Z0-060 to reveal the answer and full explanation for question #47. The question stem and answer options stay visible for context.
Question
Examine the parameter for your database instance: You generated the execution plan for the following query in the plan table and noticed that the nested loop join was done. After actual execution of the query, you notice that the hash join was done in the execution plan: Identify the reason why the optimizer chose different execution plans.
Exhibits
Options
- AThe optimizer used a dynamic plan for the query.
- BThe optimizer chose different plans because automatic dynamic sampling was enabled.
- CThe optimizer used re-optimization cardinality feedback for the query.
- DThe optimizer chose different plan because extended statistics were created for the columns used.
Unlock 1Z0-060 to see the answer
You've previewed enough free 1Z0-060 questions. Unlock 1Z0-060 for full answers, explanations, the timed quiz mode, progress tracking, and the master PDF. Question stem and options stay visible so you can still see what's on the exam.