# 1z0-931-20 — Question 602

**Type:** multiple_choice
**Topics:** topic_1

## Question

When running lots of high concurrent queries in Autonomous Database, you should use which predefined service connection? (Choose the best answer.)

## Correct Answer

_See scenario._

## Explanation

HIGH: Highest resources, lowest concurrency. Queries run in parallel.
MEDIUM: Less resources, higher concurrency. Queries run in parallel.
LOW: Least resources, highest concurrency. Queries run serially.
So, the answer is D.

**Reference:** examtopics_top_comment

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Source: https://hiexam.net/q/oracle/1z0-931-20/602  
Practice (tracked): https://hiexam.net/study/1z0-931-20/practice