KB3137730 - FIX: Error when you use Database Engine Tuning Advisor in SQL Server 2014

Applies To
SQL Server 2014 Developer - duplicate (do not use) SQL Server 2014 Enterprise - duplicate (do not use) SQL Server 2014 Express - duplicate (do not use) SQL Server 2014 Standard - duplicate (do not use) SQL Server 2014 Web - duplicate (do not use)

Symptoms

When you use Database Engine Tuning Advisor to tune a database that uses a supplementary character collation in an instance of Microsoft SQL Server 2014, you receive the following error message:

Note

Cannot successfully retrieve recommendations information.
ADDITIONAL INFORMATION:
Invalid session id (DTAClient)

      

Resolution

Cumulative update information

The issue was first fixed in the following cumulative update of SQL Server 2014:

Recommendation: Install the latest cumulative update for 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 2014:

      

      

Status

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