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Exam DP-300 topic 3 question 25 discussion

Actual exam question from Microsoft's DP-300
Question #: 25
Topic #: 3
[All DP-300 Questions]

Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. Some question sets might have more than one correct solution, while others might not have a correct solution.
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You have SQL Server 2019 on an Azure virtual machine.
You are troubleshooting performance issues for a query in a SQL Server instance.
To gather more information, you query sys.dm_exec_requests and discover that the wait type is PAGELATCH_UP and the wait_resource is 2:3:905856.
You need to improve system performance.
Solution: You create additional tempdb files.
Does this meet the goal?

  • A. Yes
  • B. No
Show Suggested Answer Hide Answer
Suggested Answer: A 🗳️
To improve the concurrency of tempdb, try the following methods:
* Increase the number of data files in tempdb to maximize disk bandwidth and reduce contention in allocation structures.
* Etc.

Note: Symptoms -
On a server that is running Microsoft SQL Server, you notice severe blocking when the server is experiencing a heavy load. Dynamic Management Views
[sys.dm_exec_request or sys.dm_os_waiting_tasks] indicates that these requests or tasks are waiting for tempdb resources. Additionally, the wait type is
PAGELATCH_UP, and the wait resource points to pages in Tempdb.
Reference:
https://docs.microsoft.com/en-US/troubleshoot/sql/performance/recommendations-reduce-allocation-contention
by o2091 at Nov. 12, 2021, 11:36 p.m.

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o2091
1 year ago
its ok?
upvoted 1 times
CaptainJameson
11 months ago
Yes, adding more tempdb files decrease contention on tempdb. https://docs.microsoft.com/en-US/troubleshoot/sql/performance/recommendations-reduce-allocation-contention
upvoted 8 times
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