TransactionScope persists causing linked server transaction not supported error

Question

I have code similar to the following. And on the second pass it throws an error (after the first TransactionScope has been created and destroyed.) The code is being executed by a unit test.
The requested operation could not be performed because OLE DB provider "MSDASQL" for linked server "SERVER2" does not support the required transaction interface.
void StartProcess(string[] accountNames)
try
foreach (string accountName in accountNames)
// This fails on the 2nd account name with error above
DataSet dataSet = GetDataFromLinkedServer(); // System.Transactions.Transaction.Current at this point on the 2nd pass has a null value.
InsertData(dataSet);
catch (Exception ex)
DataSet GetDataFromLinkedServer(string accountName)
try
{ // I have tried to execute this with and without the scope to suppress the transaction
using (var scope = new System.Transactions.TransactionScope(System.Transactions.TransactionScopeOption.Suppress))
// open connection
// execute dataset query via OpenQuery to linked server
// via 'Microsoft.Practices.EnterpriseLibrary.Data' scope.Complete()
// return dataset
catch (SqlException sqlEx)
int InsertDataInto(DataSet dataSet)
using (var scope = new System.Transactions.TransactionScope())
foreach (DataRow row in dataSet.Rows)
// insert row into database
scope.Complete();

Answer 1

Hi mangomadness,
Thank you for posting in the MSDN forum.
I know that it is the unit test project, but based on your description, the real issue would be related to the ADO.NET dataset, am I right?
If so, I suggest you debug your test, and then get the line code which generated this issue, and then post this issue to the dataset forum here:
http://social.msdn.microsoft.com/Forums/en-US/home?forum=adodotnetdataset
I think you would get dedicated support from the experts who familiar with the dataset.
Sincerely,
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