DP-300 Practice Question: Monitor, configure, and optimize database resources
You have an Azure SQL Database that uses the General Purpose service tier. You notice that the log write throughput is consistently near the limit. What should you do to improve log write performance?
⚠ Common exam trap
Watch out — candidates often assume increasing DTUs or moving to Hyperscale will solve all performance issues, but they fail to recognize that log write throughput is a specific architectural limitation of the General Purpose tier that only the Business Critical tier resolves.
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
✓
Migrate to the Business Critical service tier.
The General Purpose service tier in Azure SQL Database has a maximum log write throughput of 1.5 MB/s for the most common configurations. The Business Critical tier uses local SSD storage and a higher log I/O limit (up to 100 MB/s), which directly addresses log write throughput bottlenecks. Migrating to Business Critical is the correct action because it provides significantly higher log write throughput and lower latency for transaction log writes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Migrate to the Business Critical service tier.
Why this is correct
Business Critical provides higher log write throughput.
- ✗
Enable accelerated database recovery.
Why it's wrong here
This reduces rollback time, not log throughput.
- ✗
Migrate to the Hyperscale service tier.
Why it's wrong here
Hyperscale has lower log write throughput per vCore.
- ✗
Increase the DTU purchase model to a higher tier.
Why it's wrong here
DTU tiers also have log throughput limits; Business Critical is vCore.
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.
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Senior Network & Security Engineer · founder of Courseiva
This DP-300 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DP-300 exam.