Operational Defect Database
BugZero found this defect 1308 days ago.
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Microsoft SQL Server | 10936183
KB4039868 - FIX: Performance drop when using In-Memory OLTP with Always On availability groups in SQL Server 2016 or 2017 - Microsoft Support
Last update date:
7/20/2023
Affected products:
SQL Server 2016 Enterprise Core - duplicate (do not use)
SQL Server 2016 Enterprise - duplicate (do not use)
SQL Server 2016 Developer - duplicate (do not use)
SQL Server 2016 Standard - duplicate (do not use)
SQL Server 2017 on Windows (all editions)
Affected releases:
build lower than 14.0.3006.16
Fixed releases:
14.0.3006.16
Description:
Symptoms
Assume that you use In-Memory OLTP together with Always On availability groups in Microsoft SQL Server 2016 or 2017. If the availability group is configured to use the synchronous-commit availability mode, you may notice a temporary decrease in performance for In-Memory OLTP transactions. To check whether you are experiencing this issue, check the SQL Server 2016 XTP Transactions:Transactions created/sec performance counter. You might be experiencing this issue if there are any regular drops with an interval of about 30 to 60 seconds. Additionally, the Database:Log Pool Total Active Log Size and Log Pool Total Shared Pool Size performance counters could have the same change pattern (for example, the size decreases to zero with the same interval).
Resolution
This fix is included in the following cumulative updates for SQL Server: Cumulative Update 1 for SQL Server 2017 Cumulative Update 5 for SQL Server 2016 Service Pack 1
About SQL Server builds:
Each new build for SQL Server contains all the hotfixes and security fixes that were in the previous build. We recommend that you install the latest cumulative updates for SQL Server: Latest cumulative update for SQL Server 2017 latest build for SQL Server 2016
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.
