Question

I am attempting to execute a stored proc in asp.net in the code behind. The parameter I am trying to pass is strErrorMessage that contains a value of "The transport failed to connect to the server.; ".

The error message when the query gets executed is: The incoming tabular data stream (TDS) remote procedure call (RPC) protocol stream is incorrect. Parameter 1 ("@errMessage"): Data type 0xE7 has an invalid data length or metadata length.

Update with code

    try
    {
        ...
        ...
        ...
    }
        catch (Exception ex)
        {
            ClientScript.RegisterStartupScript(GetType(), "alert", "alert('Email was not sent - " + ex.Message + "');", true);

            string strMessage = ex.Message;
            string strStackTrace = ex.StackTrace;

            strMessage = strMessage.Replace("\r\n", "; ");
            strMessage = strMessage.Replace("   ", "");

            strStackTrace = strStackTrace.Replace("\r\n", "; ");
            strStackTrace = strStackTrace.Replace("   ", "");
            AppErrorLog(strMessage, strStackTrace);
            return false;
        }


    protected void AppErrorLog(string strErrorMessage, string strErrorStackTrace)
    {
        SqlConnection conErrLog = new SqlConnection(strConn);
        string sql = "usp_AppErrorLog_AddRecord";
        SqlCommand cmdErrLog = new SqlCommand(sql, conErrLog);
        conErrLog.Open();
        try
        {
            cmdErrLog.CommandType = CommandType.StoredProcedure;

            cmdErrLog.Parameters.Add(new SqlParameter("@errMessage", SqlDbType.NVarChar, 8000));
            cmdErrLog.Parameters["@errMessage"].Value = strErrorMessage;

            cmdErrLog.Parameters.Add(new SqlParameter("@errStackTrace", SqlDbType.NVarChar, 8000));
            cmdErrLog.Parameters["@errStackTrace"].Value = strErrorStackTrace;

            cmdErrLog.Parameters.Add(new SqlParameter("@userID", SqlDbType.VarChar, 12));
            cmdErrLog.Parameters["@userID"].Value = User.Identity.Name;

            SqlDataAdapter ada = new SqlDataAdapter(cmdErrLog);
            cmdErrLog.ExecuteNonQuery();
        }
        catch(Exception e)
        {
            ClientScript.RegisterStartupScript(GetType(), "alert", "alert('AppErrorLog - " + e.Message + "');", true);
        }
        finally
        {
            conErrLog.Close();
        }
    }

The column datatype in the table is nvarchar(MAX).
Any ideas how to resolve this?

Answer 1

This part “Data type 0xE7 has an invalid data length” leads me to believe that the parameter strErrorMessage is specified as having more datalength than the SQL Parameter DataType can handle.

Here is a Microsoft Support article that may help.

According to the article

When you specify an NVarChar parameter
with SqlParameter.Size between 4001
and 8000, SqlClient will throw the
following exception.

The incoming tabular data stream (TDS)
remote procedure call (RPC) protocol
stream is incorrect. Parameter
(“@”): Data type 0xE7
has an invalid data length or metadata
length.

To work around this issue, use one of
the following options:

· Set Sqlparamter.size
property to -1 to ensure that you are
getting the entire data from the
backend without truncation.

· When working with String
DbTypes whose sizes are greater than
4000, explicitly map them to another
SqlDBType like NText instead of using
NVarchar(which also is the default
SqlDBType for strings).

· Use a value that is not
between 4001 and 8000 for
Sqlparameter.size.