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Cannot verify connection to MS SQL Server database instance

Nov 2, 2010 7:19 AM

I have come across an interesting issue and hopefully I'm not the only one with this scenario.  First the environment: 64-bit Windows Server 2008 (I found the same issue on SP2 and R2), ColdFusion 9.0.1 Enterprise edition, ColdFusion HotFix 1, IIS 7 (native mode), Sun Java 1.6.0_22, Microsoft SQL Server 2005 (on a different server).


The issue that I have is I cannot get my datasource to verify.  ColdFusion returns this error:


Connection verification failed for data source: clients
java.sql.SQLNonTransientConnectionException: [Macromedia][SQLServer JDBC Driver]The requested instance is either invalid or not running.
The root cause was that: java.sql.SQLNonTransientConnectionException: [Macromedia][SQLServer JDBC Driver]The requested instance is either invalid or not running.


Now here is what I have found so far.  I think I have finally narrowed this down to an issue with the Sandbox Security and the fact that we are using a database instance on our SQL server.  With the Sandbox Security enabled in ColdFusion I can verify a datasource that connects directly to the SQL server, for example the Server is "server-name".  I cannot verify a datasource that connects to a database instance on that same server, for example the Server is "server-name\db-instance-name".  I get the error noted above.  With the Sandbox Security disabled in ColdFusion both datasources verify correctly (without error).


Has anyone else come across this situation?

Does anybody know what additional sandbox security ColdFusion needs to make these database instances work?

Does anybody know any additional debugging/logging I can turn on to track this down further?  In watching the server's network connections ColdFusion does not even appear to attempt and make the tcp connection to the database server.  It appears to fail before a connection is attempted.


Thanks in advance for any help.
Miguel Fernandez

 
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