DP-300 Configure and manage automation of tasks Practice Question
Your company uses Azure SQL Managed Instance with transactional replication. You need to automate the monitoring of replication latency and send an alert if latency exceeds 5 minutes. You want to use Azure Monitoring capabilities. What is the most efficient solution?
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
✓
Create an Azure Monitor metric alert on the 'Log Send Queue Size' metric with a threshold of 300000 KB (approximately 5 minutes).
The most efficient solution because Azure Monitor provides built-in metrics for transactional replication on Azure SQL Managed Instance, such as 'Log Send Queue Size'. By creating a metric alert with a threshold of 300000 KB (which corresponds to approximately 5 minutes of latency at typical throughput), you can be notified automatically when latency exceeds this threshold. This approach uses native Azure Monitoring capabilities without requiring custom jobs or scripts. Options A, B, and C are less efficient: A requires Elastic Database Jobs and a logic app; B uses a performance counter that is not directly exposed in Azure Monitor for SQL Managed Instance and is more complex to set up; C requires creating a SQL Agent job to check a DMV and send email, which is manual and not as scalable as Azure Monitor alerts.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use Elastic Database Jobs to run a query on the distributor and log results to a table, then set up a logic app to check the table.
Why it's wrong here
Overly complex and not leveraging native monitoring.
- ✗
Monitor the 'Replication: Dist Delivery Latency' performance counter.
Why it's wrong here
This counter is not available in Azure SQL Managed Instance.
- ✗
Create a SQL Agent job on the publisher that checks sys.dm_repl_sync_status and sends an email.
Why it's wrong here
SQL Agent jobs in Managed Instance can send email but this approach is not integrated with Azure Monitor.
- ✓
Create an Azure Monitor metric alert on the 'Log Send Queue Size' metric with a threshold of 300000 KB (approximately 5 minutes).
Why this is correct
This metric directly reflects replication latency and can trigger alerts.
Go deeper
Related to this question
Learn chapter
Overview of Azure Data Platform Options
Key term
Azure SQL Managed Instance
Azure SQL Managed Instance is a fully managed cloud database service that gives you nearly all the features of Microsoft SQL Server on your own server, without you having to manage the hardware or operating system.
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