FIX: A memory leak occurs when SQL Server procedure cache consumes too much memory

Symptoms

If the SQL Server procedure cache consumes too much memory that has several entries in it, and the Query Store is enabled, a memory leak will occur. Additionally, when you execute DBCC PROCCACHE, the value of the num proc buffs column is a fairly big number but that of the proc cache used column is just 0, 1, or 2.

Resolution

This issue is fixed in the following cumulative updates for SQL Server:

Cumulative Update 1 for SQL Server 2016 Service Pack 1 (SP1)

Cumulative Update 4 for SQL Server 2016

About the cumulative update


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.
Properties

Article ID: 3212523 - Last Review: 2017 Yanv 17 - Revision: 7

Fikr-mulohaza