Exam 1Z0-084 Topic 3 Question 47 Discussion

Actual exam question for Oracle's 1Z0-084 exam
Question #: 47
Topic #: 3
Which Optimizer component helps decide whether to use a nested loop join or a hash join in an adaptive execution plan?

Suggested Answer: C Vote an answer

In an adaptive execution plan, the Optimizer makes runtime decisions between nested loop and hash joins using a statistics collector. The collector is a row source that collects statistics about the rows it processes and can adapt the plan based on the number of rows processed.
References:
* Oracle Database SQL Tuning Guide, 19c

by Dunn at Oct 29, 2026, 03:36 AM

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