The correct first step is to use Cloud SQL Query Insights to find the most time-consuming queries. This managed tool automatically captures and analyzes query performance metrics like CPU consumption, latency, and execution plans, allowing you to pinpoint the exact queries driving high CPU utilization without making any changes to the instance. On the Google Professional Cloud DevOps Engineer exam, this scenario tests your understanding of observability-first troubleshooting—the trap is jumping to actions like adding indexes or restarting the database, which could worsen the impact. Instead, Query Insights provides a read-only, diagnostic view that isolates the root cause safely. Remember the memory tip: “Query first, change last”—always investigate with built-in insights before modifying the live environment.
PCDOE Managing service incidents Practice Question
This PCDOE practice question tests your understanding of managing service incidents. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A team uses Cloud SQL for PostgreSQL. They receive an alert that the database's CPU utilization is above 95% for the past 30 minutes. Queries are taking longer than usual. They want to investigate without causing further impact. What should they do first?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Cloud SQL Query Insights to find the most time-consuming queries
Cloud SQL Query Insights is a managed monitoring tool that automatically captures and analyzes query performance metrics, including CPU consumption, latency, and execution plans. In this scenario, it allows the team to identify the specific queries causing high CPU utilization without making any changes to the instance, thus avoiding further impact. This is the first and safest diagnostic step before any remediation.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Increase the number of vCPUs of the Cloud SQL instance
Why it's wrong here
Scaling up is a mitigation but should be done after understanding the cause.
✗
Restart the Cloud SQL instance to clear the cache
Why it's wrong here
Restarting causes downtime and does not fix the root cause.
✗
Migrate the database to Cloud Spanner
Why it's wrong here
Migration is a long-term project, not an immediate investigation step.
✓
Use Cloud SQL Query Insights to find the most time-consuming queries
Why this is correct
Query Insights shows top queries by CPU and latency.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the principle that the first step in incident management is always to gather diagnostic data without making changes, and the trap here is that candidates may jump to scaling (Option A) or restarting (Option B) as quick fixes, ignoring that these actions can cause further disruption and do not provide root-cause analysis.
Detailed technical explanation
How to think about this question
Cloud SQL Query Insights uses the PostgreSQL pg_stat_statements extension under the hood to collect normalized query statistics, including total execution time, rows returned, and shared buffer hit ratios. It surfaces this data in the Google Cloud Console with time-series charts, enabling the team to sort queries by CPU time or latency and drill into individual execution plans. In a real-world scenario, a single unoptimized query with a missing index or a sudden change in data distribution (e.g., a table scan on a large table) can spike CPU to 95% without any other infrastructure change.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Managing service incidents — This question tests Managing service incidents — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Cloud SQL Query Insights to find the most time-consuming queries — Cloud SQL Query Insights is a managed monitoring tool that automatically captures and analyzes query performance metrics, including CPU consumption, latency, and execution plans. In this scenario, it allows the team to identify the specific queries causing high CPU utilization without making any changes to the instance, thus avoiding further impact. This is the first and safest diagnostic step before any remediation.
What should I do if I get this PCDOE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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