KB2963138 - FIX: Parallel deadlock or self-deadlock occurs when you run a query that results in parallelism in SQL Server

Applies To

SQL Server 2012 Enterprise SQL Server 2012 Developer SQL Server 2012 Standard SQL Server 2012 Web SQL Server 2014 Developer - duplicate (do not use) SQL Server 2014 Enterprise - duplicate (do not use) SQL Server 2014 Standard - duplicate (do not use)

This issue occurs when parallelism is allowed at server or query level.

(Process ID 85) was deadlocked on thread | communication buffer resources with another process and has been chosen as the deadlock victim. Rerun the transaction.

Resolution

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

Cumulative Update 4 for SQL Server 2014 /en-us/help/2999197

Cumulative Update 1 for SQL Server 2012 SP2 /en-us/help/2976982

Cumulative Update 10 for SQL Server 2012 SP1 /en-us/help/2954099

About cumulative updates 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. Check out the latest cumulative updates for SQL Server:

Status

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