Question

我们正在处理死锁问题，并找到了解决死锁异常并重新提交6次的解决方案。用户很高兴他们没有得到任何错误，但是在2小时后抛出一个新的错误，生成时出现以下错误＆＃34; Usp_updateXXXX抛出了太多的争论＆＃34; 。只要应用遇到deaadlock异常，就会发生此问题。

请在下面找到代码段 { // msg = string.Empty;

        SqlConnection _con = new SqlConnection(Conn);
        SqlCommand _cmd = new SqlCommand();
        SqlDataAdapter _adp = new SqlDataAdapter(_cmd);
        _cmd.Connection = _con;
        bool isDeadlock = false;
        int reTry = 0;
        //Check for Deadlock and retry for 6 times to send the same request
        do
        {
            msg = string.Empty;
            try
            {
                _con.Open();
                _cmd.CommandType = CommandType.StoredProcedure;
                _cmd.CommandText = "usp_UpdateXXXX";
         //Assign the command parametrs                         
                _cmd.ExecuteNonQuery();
                                   isDeadlock = false;                    
            }
            catch (Exception ex)
            {
                if ((ex.Message.Contains("was deadlocked on lock resources with another process and has been chosen as the deadlock victim")) || (ex.Message.Contains("deadlock")) || (ex.Message.Contains("Transaction (Process ID")))
                {

                    isDeadlock = true;
                    Thread.Sleep(5000);
                    reTry++;

                }
                else
                {
                    msg = ex.Message;
                    isDeadlock = false;
                }
            }
            finally
            {
                con.Close();
            }
        } while (reTry < 6 && isDeadlock == true);

任何人都可以帮助我导致抛出异常的代码错误在哪里。

此致 PRASHANT

Answer 1

问题发生的原因是使用了循环。实际上，当异常发生时，它再次调用循环而不清除现有参数，因此添加新参数。

要解决此问题，我在异常部分清除了参数。

try{
     //statements here
   }
        catch (Exception ex)
        {
            if ((ex.Message.Contains("was deadlocked on lock resources with another process and has been chosen              as                   the deadlock victim")) || (ex.Message.Contains("deadlock")) || (ex.Message.Contains("Transaction (Process ID")))
            {
                   //used below statement
                command.Parameters.Clear() ;

                isDeadlock = true;
                Thread.Sleep(5000);
                reTry++;

            }
            else
            {
                msg = ex.Message;
                isDeadlock = false;
            }
        }

这解决了我的问题。

此致 PRASHANT

Usp_updateXXXX抛出的参数太多了

1 个答案: