This problem occurs because a memory leak occurs when the Service Broker establishes a connection. The memory leak may occur if certificate based authentication is used for a Service Broker dialog. The Service Broker dialog closes when the connection times out. When a later message is sent to the conversation target, the memory leak occurs again. Therefore, after some time, the server runs out of memory.
Service pack information
To resolve this problem, obtain the latest service pack for SQL Server 2005. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
913089 How to obtain the latest service pack for SQL Server 2005
To work around this issue, use Windows-based authentication for the Service Broker dialog security.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. This problem was first corrected in SQL Server 2005 Service Pack 3.
For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates