Operational Defect Database
BugZero found this defect 1308 days ago.
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Microsoft SQL Server | 13421858
KB4541303 - FIX: Non-yielding Scheduler error may occur with Always On availability group in Microsoft SQL Server - Microsoft Support
Last update date:
9/16/2021
Affected products:
SQL Server 2016 Service Pack 2
SQL Server 2016 Developer - duplicate (do not use)
SQL Server 2016 Enterprise - duplicate (do not use)
SQL Server 2016 Enterprise Core - duplicate (do not use)
SQL Server 2016 Standard - duplicate (do not use)
SQL Server 2019 on Windows
SQL Server 2017 Developer on Windows
SQL Server 2017 Enterprise Core on Windows
SQL Server 2017 Enterprise on Windows
SQL Server 2017 Standard on Windows
SQL Server 2016
SQL Server 2016 Service Pack 3 - duplicate (do not use)
Affected releases:
build lower than 15.0.4033.1
Fixed releases:
15.0.4033.1
Description:
Symptoms
You may experience non-yielding scheduler in Microsoft SQL Server that's the primary replica of the Always On availability group (AG) when the SQL Server instance is under low memory. Additionally, the following entry is logged in the SQL Server error log: DateTime Server Process 0:0:0 (0x1fa4) Worker 0x000001024B232160 appears to be non-yielding on Scheduler 3. Thread creation time: 13215777539641. Approx Thread CPU Used: kernel 4932703 ms, user 5961140 ms. Process Utilization 15%. System Idle 81%. Interval: 10902277 ms.
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Resolution
This problem is fixed in the following cumulative updates for SQL Server: Cumulative Update 4 for SQL Server 2019 Cumulative Update 20 for SQL Server 2017 Cumulative Update 12 for SQL Server 2016 SP2 About cumulative updates for SQL Server: Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server: Latest cumulative update for SQL Server 2019 Latest cumulative update for SQL Server 2017 Latest cumulative update for SQL Server 2016
Service pack information for SQL Server 2016
This problem is fixed in the following service pack for SQL Server: Service Pack 3 for SQL Server 2016
References
Learn about the terminology that Microsoft uses to describe software updates.
