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TransactionScope 访问Oracle临时表时高并发 14450错误

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悬赏园豆:100 [已关闭问题] 关闭于 2015-03-17 22:23

使用transactionscrope时 如:

using (TransactionScope scop = new TransactionScope())
                    {
                        OracleCommand cmd = new OracleCommand("insert into TMP_TEST values('" + DateTime.Now + "')", con, tran);
                        con.Open();


                        var result2 = cmd.ExecuteNonQuery();

                        OracleCommand cmd3 = new OracleCommand("select COL1 from tmp_test", con);
                        var t2 = cmd3.ExecuteOracleScalar();
                        Console.WriteLine("2受影响的行数:" + result + "||当前临时表数量:" + t2);
                        
                        
                        OracleDataAdapter da = new OracleDataAdapter("select  * from TMP_TEST", con);
                        DataTable dt = new DataTable();
                        da.Fill(dt);
                        Console.WriteLine("3受影响的行数:" + result2 + "||当前临时表数量:" + dt.Rows.Count);
                        scop.Complete();
                    } 

当启用高并发时,报错14450,并发实现为:

for (int i = 0; i < 100; i++)
            {
                new Thread(new ParameterizedThreadStart(new Class1().Func1)).Start(i);
            }
问题补充:

在及时提交时不会有问题,但是如果不提交则出现14450错误,

transactionscrope 提交|回滚  是在Dispose中执行的,

使用CommittableTransaction 如:

 OracleConnection con = new OracleConnection();
            con.ConnectionString = ConfigurationManager.ConnectionStrings["MB.MBERP"].ConnectionString;

            using (CommittableTransaction transaction = new CommittableTransaction())
            {
                Transaction.Current = transaction;

                OracleCommand cmd = new OracleCommand("insert into TMP_TEST values('" + i + "')", con);
                con.Open();


                // var result2 = 1;
                var result2 = cmd.ExecuteNonQuery();

                OracleCommand cmd3 = new OracleCommand("select  COL1  from tmp_test", con);
                var t2 = cmd3.ExecuteOracleScalar();
                //Console.WriteLine("local: {0} ; distr: {1}", Transaction.Current.TransactionInformation.LocalIdentifier, Transaction.Current.TransactionInformation.DistributedIdentifier);
                Console.WriteLine(i + "受影响的行数:" + result2 + "||当前临时表数量:" + t2);
                long tick = DateTime.Now.Ticks;
                Thread.Sleep(new Random((int)(tick & 0xffffffffL) | (int)(tick >> 32)).Next(1000));
              //  transaction.Commit();
                transaction.Rollback();
                con.Close();
            }

也是出现14450错误,commit则正常;

使用dbtrasnaction 如:

 con.Open();
                var tran = con.BeginTransaction();

                OracleCommand cmd1 = new OracleCommand("insert into TMP_TEST values('" + DateTime.Now.Ticks + "')", con, tran);
                var result = cmd1.ExecuteNonQuery();


                OracleCommand cmd2 = new OracleCommand("select COL1 from tmp_test", con, tran);
                var t = cmd2.ExecuteOracleScalar();

                tran.Rollback();
                con.Close();
                Console.WriteLine(i + "受影响的行数:" + result + "||当前临时表数量:" + t);

则不会出问题

HansonYao的主页 HansonYao | 菜鸟二级 | 园豆:204
提问于:2015-03-10 15:18
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