Exception handling in an RFC server

Question

Hi,
   I've an RFC server coded in vb.net.  Am trying to capture the exceptions raised by the server in an ABAP program.  But it is giving a short dump.  Can any one tell me the reason for this? 
Regards,
Aravinda Sarma M.
The following is the code:
Try
            SqlHeaderConnection.Open()
            rsHeaderData = sqlCommand.ExecuteReader()
        Catch ex As RfcAbapException
            'excpError = New RfcAbapException("NOCONN", "Error in Query")
            Throw ex
        Finally
            rsHeaderData.Close()
            SqlHeaderConnection.Close()
        End Try

Answer 1

Neither SqlHeaderConnection.Open nor sqlCommand.ExecuteReader will throw RfcAbapExceptions, but some other .NET exceptions that cannot be understood by APAP. So you need to convert the .NET-exception to an ABAP-Exception:
Try
SqlHeaderConnection.Open()
rsHeaderData = sqlCommand.ExecuteReader()
Catch ex As Exception
Throw New RfcAbapException("NOCONN", "Error in Query")
Finally
rsHeaderData.Close()
SqlHeaderConnection.Close()
End Try