无法使用C#更新Oracle数据库中表的列

我正在尝试更新Oracle database.The中的两个表first try/catch部分工作正常，但是，第二个表不更新penalty_fine列，尽管我使用了相同的代码。查询在Toad上运行正常。我试图通过合并sql查询将它们合并到一个try/catch中，但在第二个表上不起作用。

任何帮助都是非常感谢的。

谢谢

try
{

    OracleCommand command2 = new OracleCommand();

    command2.CommandText = "Update t_payment set amount = :amount + (select amount from t_payment where penalty_order_id = (select id from t_penalty_order where protokol_no = :invoiceNumber)) where penalty_order_id = (select id from t_penalty_order where protokol_no = :invoiceNumber)";

    command2.Parameters.Add(new OracleParameter(@"amount", OracleDbType.Int32)).Value = Convert.ToInt32(request.amount);
    command2.Parameters.Add(new OracleParameter(@"invoiceNumber", OracleDbType.Varchar2, 255)).Value = request.invoiceNumber;

    command2.Connection = connection;

    command2.CommandType = System.Data.CommandType.Text;


    command2.ExecuteNonQuery();


}
catch (Exception e)
{
    completePayment.code = 111;
    completePayment.message = e.Message;
    completePayment.transactionNumber = null;
}




try
{

    OracleCommand command2 = new OracleCommand();

    command2.CommandText = "Update t_penalty_order set penalty_fine = 10 where protokol_no = :invoiceNumber";


    command2.Parameters.Add(new OracleParameter(@"invoiceNumber", OracleDbType.Varchar2, 255)).Value = request.invoiceNumber;

    command2.Connection = connection;

    command2.CommandType = System.Data.CommandType.Text;


    command2.ExecuteNonQuery();


}
catch (Exception e)
{
    completePayment.code = 111;
    completePayment.message = e.Message;
    completePayment.transactionNumber = null;
}

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