You query by using sys.dm_db_tuning_recommendations dynamic management view (DMV) in SQL Server 2017. If SQL Server query optimizer (QO) uses a parallel query execution plan, an access violation may occur, and a dump file is generated.


This fix is included in the following update for SQL Server:

Cumulative Update 13 for SQL Server 2017

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 build for your version of SQL Server:

SQL Server 2017 build versions


To work around this issue, use the following option when you query sys.dm_db_tuning_recommendations to remove parallelism and avoid the risk of an access violation:



Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


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