Ibatis.net + Npgsql +PostgreSql 多线程“Timeout while getting a connection from pool.”
Ibatis.net + Npgsql +PostgreSql
数据的连接检查过关闭的都很好没有漏掉的 但还是经常遇到这个问题
Timeout while getting a connection from pool.
Ibatis.net + Devart +PostgreSql
经常出现“sorry, too many clients already”
案例：
for (int i = 0; i < 10; i++)
{
ThreadProcessor testThread1 = ThreadProcessor.Create(TestTimeOutQueryCus, OnCompleted);testThread1.Name = "testTimeOutThread";
testThread1.Start();}
for (int i = 0; i < 10; i++)
{
ThreadProcessor testThread2 = ThreadProcessor.Create(TestNotTimeOutQueryCus, OnCompleted);
testThread2.Name = "testNotTimeOutThread";
testThread2.Start();
}
private bool isSotp = false;
private void TestTimeOutQueryCus()
{
int count = 0;
while (!isSotp)
{
try
{
count++;
int threadId = _threadId;
//ICustomerModule module =
// (ICustomerModule)ModuleContext.GetModule(typeof(ICustomerModule));
//ICustomer[] cus = module.GetCustomer("10000");testTimeOutQuery(threadId, count);
//testNpgsql();
}
catch (Exception ex)
{
WriteTxt("测试多线程QueryCustomer-Error--" + ex.ToString());
}
}
WriteTxt("超时线程停止");}
private void TestNotTimeOutQueryCus()
{
int count = 0;
while (true)
{
try
{
count++;
int threadId = _threadId;
//ICustomerModule module =
// (ICustomerModule)ModuleContext.GetModule(typeof(ICustomerModule));
//ICustomer[] cus = module.GetCustomer("10000");testNotTimeOutQuery(threadId, count);
//testNpgsql();
}
catch (Exception ex)
{
WriteTxt("测试多线程QueryCustomer-Error--" + ex.ToString());
}
}}
private void testTimeOutQuery(int threadId, int count)
{
try
{string queryCus = "select *,xmin from \"Cus_Customer\" c where 1=1 and ( ( EXISTS (select \"CustomerId\" from \"Cus_CustomerGroup\" where c.\"CustomerId\" = \"Cus_CustomerGroup\".\"CustomerId\" and \"GroupId\" in (4)) ) ) and (c.\"DefaultNumberType\" = 'Mobile1' or c.\"DefaultNumberType\" = 'Mobile2')";
SmsOperateBatchDao.Singleton.OperateBatchSms(queryCus);
WriteTxt("超时线程正常");
}
catch (Exception ex)
{
isSotp = true;
WriteTxt("超时线程,异常");
}
}private void testNotTimeOutQuery(int threadId, int count)
{count++;
try
{string queryCus = "select * from \"Cus_Customer\" limit 1";
SmsOperateBatchDao.Singleton.OperateBatchSms(queryCus);
WriteTxt("不超时线程正常");
}
catch (Exception ex)
{
WriteTxt("不超时线程,异常" + ex.ToString());}
}
private void WriteTxt(string msg)
{
try
{
msg = DateTime.Now + "\r\n" + msg + "\r\n";
File.AppendAllText(parth, msg);}
catch (Exception ex)
{
ExLog.Write("写入文件失败：" + ex.ToString());
}
}
IBatisNet.DataMapper.Exceptions.DataMapperException: Unable to open connection to "DevartPgsql, DevartPgsql provider V4.95.140.0". ---> Devart.Data.PostgreSql.PgSqlException: Server did not respond within the specified timeout interval. ---> System.TimeoutException: Server did not respond within the specified timeout interval. ---> System.IO.IOException: 无法从传输连接中读取数据: 由于连接方在一段时间后没有正确答复或连接的主机没有反应，连接尝试失败。。 ---> System.Net.Sockets.SocketException: 由于连接方在一段时间后没有正确答复或连接的主机没有反应，连接尝试失败。
在 System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags)
在 System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
--- 内部异常堆栈跟踪的结尾 ---
在 System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size)
在 Devart.Common.y.a(Byte[] A_0, Int32 A_1, Int32 A_2)
--- 内部异常堆栈跟踪的结尾 ---
在 Devart.Common.y.a(Byte[] A_0, Int32 A_1, Int32 A_2)
在 Devart.Common.m.c(Byte[] A_0, Int32 A_1, Int32 A_2)
在 Devart.Common.am.e(Byte[] A_0, Int32 A_1, Int32 A_2)
--- 内部异常堆栈跟踪的结尾 ---
在 Devart.Data.PostgreSql.y.ad()
在 Devart.Data.PostgreSql.y.a()
在 Devart.Common.DbConnectionInternal.ak()
在 Devart.Common.DbConnectionFactory.a(DbConnectionBase A_0)
在 Devart.Common.DbConnectionClosed.Open(DbConnectionBase outerConnection)
在 Devart.Common.DbConnectionBase.Open()
在 Devart.Data.PostgreSql.PgSqlConnection.Open()
在 IBatisNet.DataMapper.SqlMapSession.OpenConnection(String connectionString)
--- 内部异常堆栈跟踪的结尾 ---
在 IBatisNet.DataMapper.SqlMapSession.OpenConnection(String connectionString)
在 IBatisNet.DataMapper.SqlMapSession.OpenConnection()
在 IBatisNet.DataMapper.Commands.DbCommandDecorator.System.Data.IDbCommand.ExecuteReader()
在 IBatisNet.DataMapper.MappedStatements.MappedStatement.RunQueryForObject[T](RequestScope request, ISqlMapSession session, Object parameterObject, T resultObject)
在 IBatisNet.DataMapper.MappedStatements.MappedStatement.ExecuteQueryForObject[T](ISqlMapSession session, Object parameterObject, T resultObject)
在 IBatisNet.DataMapper.MappedStatements.MappedStatement.ExecuteQueryForObject[T](ISqlMapSession session, Object parameterObject)
在 IBatisNet.DataMapper.SqlMapper.QueryForObject[T](String statementName, Object parameterObject)
在 Banger.Dao.IbatisMapper.IbatisObjectMapper.QueryValue[T](String statement, Object conds)
在 Banger.Css.Common.CommonDao.QueryValue[T](String statement, Object conds) 位置 F:\Banger-SVN\客户服务系统\trunk\03.编码\CssServer\Source\Banger.Css.Common\CommonDao.cs:行号 68
在 Banger.Css.SmsModule.Dao.SmsOperateBatchDao.OperateBatchSms(String sql) 位置 F:\Banger-SVN\客户服务系统\trunk\03.编码\CssServer\Source\Banger.Css.SmsModule\Dao\SmsOperateBatchDao.cs:行号 26
在 TestT.Form1.testNotTimeOutQuery(Int32 threadId, Int32 count) 位置 C:\Users\Ryan\Desktop\TestT\Form1.cs:行号 285
解决方案：
无