Assume that you have many databases (for example, 1,000 databases) in a single instance of Microsoft SQL Server 2016 or 2017. You may notice that memory usage is greater when you compare it to memory usage in earlier versions of SQL Server.
This fix is included in the following cumulative updates for SQL Server:
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:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Learn about the terminology Microsoft uses to describe software updates.