Assume that you have a database that has columnstore indexes in Microsoft SQL Server 2014. When you run DBCC CHECKDB command against the database, a memory leak occurs under the MEMORYCLERK_SQLQUERYEXEC clerk. The memory under that clerk increases every time when you run DBCC CHECKDB command, until all available memory is consumed.
Note The memory object that results in the leak is MEMOBJ_COLUMNBATCH. It is created under the memory clerk MEMORYCLERK_SQLQUERYEXEC.
Cumulative Update information
The issue was first fixed in the following cumulative update of 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. We recommend that you download and 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.