This article applies to the following product:
BizTalk Adapter Pack 2010
When you use the Windows Communication Foundation (WCF)-based SQL Adapter to connect BizTalk applications to an instance of SQL Server, the WCF-SQL adapter may not release the SQL Server connections if the adapter passes invalid messages.
Cumulative update package information
For BizTalk Adapter Pack 2010
The hotfix that resolves this issue is included in cumulative update package 3 for BizTalk Adapter Pack 2010.
For more information about how to obtain this cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
2617150 Cumulative update package 3 for BizTalk Adapter Pack 2010
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about BizTalk Server hotfixes, click the following article number to view the article in the Microsoft Knowledge Base:
2003907 Information about BizTalk Server hotfixes