DP-300 Practice Question: Monitor, configure, and optimize database resources
Your Azure SQL Managed Instance is experiencing high PAGELATCH_SH waits. You need to reduce this contention. What should you implement?
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
✓
Add more data files to the filegroup
Adding more data files to the filegroup spreads out page allocations, reducing contention for allocation structures and thus decreasing PAGELATCH_SH waits. Option A is incorrect because scaling up may provide more resources but does not directly address the page latch contention caused by allocation bottlenecks. Option B is incorrect because delayed durability only affects transaction log write behavior, not page latches. Option C is incorrect because a readable secondary replica does not alleviate latch contention on the primary; it is designed for read workload offloading, not contention reduction.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Scale up the managed instance to a higher service tier
Why it's wrong here
May help indirectly but not a targeted fix.
- ✗
Enable delayed durability
Why it's wrong here
Affects transaction log, not page latches.
- ✗
Configure a readable secondary replica
Why it's wrong here
Does not reduce primary's latch contention.
- ✓
Add more data files to the filegroup
Why this is correct
Distributes page allocation and reduces contention.
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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