Question

当我尝试从生产复制本地数据库获取所有用户名密码时，我收到此错误，我想这是因为没有正确关闭连接，但我不知道如何。我正在使用Microsoft企业库，蚂蚁思考或评论它？

 Timeout expired.  The timeout period elapsed prior to 
 obtaining a connection    from the pool.  This may have occurred
 because all pooled    connections were in use and max pool size was reached.

这是获取用户名和密码并产生错误的方法。

private Model.UsernameandPass GetUsernamePass(string AccountNumber)
    {
        Model.UsernameandPass model = null;

        string myConnection = System.Configuration.ConfigurationManager.ConnectionStrings[connectionName].ToString();
        SqlDatabase db = new SqlDatabase(myConnection);

        using (DbCommand command = db.GetStoredProcCommand("Get_TheUsernamePassWordFromProduction"))
        {
            db.AddInParameter(command, "AccountNumber", DbType.String, AccountNumber);
            var result = db.ExecuteReader(command);

            try
            {


                while (result.Read())
                {

                    model = new Model.UsernameandPass();

                    model.Username = result.GetString(1);
                    model.Password = result.GetString(2);
                }

            }

            catch (Exception ex)
            {


            }


        }
        db = null;
        return model;
    }

程序运行一段时间后，我收到此行中的错误。

 var result = db.ExecuteReader(command);

Answer 1

您收到该错误是因为无法建立连接，而仅，因为它们未正确关闭。检查您尝试使用数据库进行身份验证的用户的权限。如果您以编程方式打开/关闭连接，请务必致电.open() / .close()。

Check this link。您可能希望增加池大小，或检查长时间运行的查询。

拉动数百条记录时出现SQL Server错误

1 个答案: