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Oracle Exam 1Z0-084 Topic 2 Question 33 Discussion

Actual exam question for Oracle's 1Z0-084 exam
Question #: 33
Topic #: 2
[All 1Z0-084 Questions]

Which Optimizer component helps decide whether to use a nested loop join or a hash join in an adaptive execution plan?

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Suggested Answer: C

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.


Oracle Database SQL Tuning Guide, 19c

by Doyle at Apr 30, 2025, 08:31 AM

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Janine
1 days ago
Nah, I'm going with B) SQL Plan Directives. That's the one that can override the optimizer's initial plan and force it to try a different approach.
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Carli
2 days ago
I think the answer is B) SQL Plan Directives.
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Elbert
3 days ago
I think it's gotta be E) Dynamic Statistics. That's the component that collects real-time stats to help the optimizer make better decisions, right?
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