Question

I need to call some Stored Procedures from Delphi and because they are related I have to use transactions.
But It always returns an error when called :

‘Transaction cannot have multiple recordsets with this cursor type. Change the cursor type ,commit the transaction, or close one of the recordsets.’

And this error only occurs for MS SQL SERVER 2008, when I use MS Access It works fine.
Whats the problem ?

Thanks in advance

UPDATE :

procedure TForm1.Button2Click(Sender: TObject);  
begin  
    if not DM.ADOConnection.InTransaction then  
        dm.ADOConnection.BeginTrans;  
    ADOQuery.LockType := ltBatchOptimistic;  
    ADOQuery.CursorType := ctUnspecified;  
    Try  
        with ADOQuery do  
        begin  
            Close;  
            SQL.Clear;  
            SQL.Text := 'INSERT INTO [UserAction] (UAct_Frm_ID,UAct_Type,UAct_Description'  
              +',UAct_Date,UAct_Time,UAct_Usr_ID)'
              +'VALUES(:UAct_Frm_ID'
              +',:UAct_Type,:UAct_Description,:UAct_Date,:UAct_Time'
              +',:UAct_Usr_ID)';
  Parameters.ParamByName('UAct_Frm_ID').Value := 1;
  Parameters.ParamByName('UAct_Type').Value := 1;
  Parameters.ParamByName('UAct_Description').Value := 'test by Q1';
  Parameters.ParamByName('UAct_Date').Value := completdate(datenow);
  Parameters.ParamByName('UAct_Time').Value := TimeToStr(Now);
  Parameters.ParamByName('UAct_Usr_ID').Value := 1;
  ExecSQL;
  end;
  Except
    DM.ADOConnection.RollbackTrans;
    ShowMessage('RollBack');
    Exit;
  End;
  dm.ADOConnection.CommitTrans;
  ShowMessage('Commite');
end; 

Answer 1

From here:

Resolution:

Use a different cursor type, change
the cursor location to adUseClient or
close the first recordset before
opening another on the same
connection/transaction.

Cause:

SQL Server can only open one
ForwardOnly cursor at a time on a
connection, because SQL Server can
only process one active statement at a
time per connection.

When you try to open more than one
ForwardOnly ADO recordset at a time on
a single Connection, only the first
ADO recordset is actually opened on
the Connection object. New, separate
connections are created for subsequent
ForwardOnly cursors.

A transaction is on a single
connection. When you attempt to open
more than one ForwardOnly recordset
within a single transaction, ADO
attempts to open more than one
ForwardOnly recordset on the
connection of the transaction. An
error occurs because SQL Server only
allows one ForwardOnly recordset on a
single connection. Because the error
is within a manual transaction, you
might see the error above. Microsoft
Data Access Objects 2.1 Service Pack 2
and later versions of MDAC contain
more informative error messages. For
that reason, you may see the more
informative second or third error
message, above.