DP-300 Practice Question: Monitor, configure, and optimize database resources
You are managing an Azure SQL Database that uses Intelligent Insights. You receive an alert that there is a performance issue with a specific query. You need to analyze the root cause. What should you use?
⚠ Common exam trap
Test-takers frequently confuse Intelligent Insights' automated diagnostics with the granular, query-level historical data that Query Store provides, assuming the alert's source (Intelligent Insights) is also the tool for deep manual investigation.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Query Store to review query execution plans and wait statistics
Query Store is the correct tool because it captures historical execution plans, runtime statistics, and wait statistics for individual queries, allowing you to pinpoint the root cause of a performance regression. Intelligent Insights provides high-level diagnostics but not the granular per-query plan and wait data needed for deep analysis of a specific query issue.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Intelligent Insights report
Why it's wrong here
Intelligent Insights provides high-level summaries, not detailed query analysis.
- ✗
Automatic Tuning recommendations
Why it's wrong here
Automatic Tuning applies fixes but does not provide root cause analysis.
- ✗
Azure Monitor metrics for the database
Why it's wrong here
Metrics show overall resource usage, not specific query details.
- ✓
Query Store to review query execution plans and wait statistics
Why this is correct
Query Store provides detailed query performance data for root cause analysis.
Go deeper
Related to this question
Learn chapter
Overview of Azure Data Platform Options
Key term
Azure SQL Performance Tuning
Azure SQL Performance Tuning is the process of optimizing the speed and efficiency of queries and database operations in Microsoft Azure SQL Database or SQL Managed Instance to reduce latency and improve throughput.
Key term
Query Store
Query Store is a built-in SQL Server feature that captures and stores a history of query execution plans and performance data for easy monitoring and troubleshooting.
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