小编Joh*_*ehl的帖子

DB 工作的新手，所以感谢您对基本问题的耐心。我在本地机器上运行 SQL Server 2014，我有一个小表和一个基本的客户端应用程序来测试不同的方法。我在INSERT INTOandUPDATE语句中都得到了一个表锁。客户端是具有以下代码的 ASP.NET 应用程序：

OleDbConnection cn = new OleDbConnection("Provider=SQLNCLI11; server=localhost\\SQLEXPRESS; Database=<my db>; user id=<my uid>; password=<my pwd>");
cn.Open();
OleDbTransaction tn = cn.BeginTransaction();
OleDbCommand cmd = new OleDbCommand("INSERT INTO LAYOUTSv2 (LAYOUTS_name_t, LAYOUTS_enabled_b, LAYOUTS_data_m) VALUES ('name', '-1', 'data')", cn, tn);
cmd.ExecuteNonQuery();
cmd.CommandText = "SELECT SCOPE_IDENTITY()";
int newkey = Decimal.ToInt32((decimal)cmd.ExecuteScalar());
Console.WriteLine("Created index " + newkey);
Thread.Sleep(15000);
tn.Commit();
tn = cn.BeginTransaction();
cmd.CommandText = "UDPATE LAYOUTSv2 SET LAYOUTS_enabled_b='-3' WHERE LAYOUTS_key='" + newkey + "'";
cmd.Transaction = tn; …