Mobile: A socket operation was attempted to an unreachable host

[[email protected]]

Hi,
i have a problem with my OraDirect 3.50 Mobile. Wenn my mobile apllication have a long pause (about 10 Minutes), i get the this error(below).
(I close the OraConnection after each DB operation)
Please Help!!!
Thanks a lot!
Eugen

A managed OracleException occured at CoreLab1Oracleab::a+0x21
Network error (A socket operation was attempted to an unreachable host )
CoreLab1Oracleab:a+0x21
DbConnectionInternal::Dispose+0x7
DbConnectionPoolGroup:b+0xb
DbConnectionPool::RemoveObject+0x46
DbConnectionPoolGroup::a+0xa2
DbConnectionPoolGroup::a+0x62
Timer::ring+0x59

[Alexey]

Please send us small test project if possible to reproduce the problem; it is
desirable to use 'scott' schema objects, otherwise include definition of
your own database objects. Do not use third party components.
If it is impossible for you to create test project please send us a piece of
your code where the error occurs.

[Eugen]

Hi Alexey,
I sent an example to you. (on support team address)

Thanks a lot!
Eugen

[Eugen]

Hi Alexey,
Here is detail description of my problem
1. Open OracleConnection
2. Execute query (select * from dual)
3. Close OracleConnection
4. Disconnect the network connection(leave the WLAN) and wait 6-10 Minutes without doing any further action.
5. You will get this exception and the program is dead.
A managed OracleException occured at CoreLab1Oracleab::a+0x21
Network error (A socket operation was attempted to an unreachable host )
CoreLab1Oracleab:a+0x21
DbConnectionInternal::Dispose+0x7
DbConnectionPoolGroup:b+0xb
DbConnectionPool::RemoveObject+0x46
DbConnectionPoolGroup::a+0xa2
DbConnectionPoolGroup::a+0x62
Timer::ring+0x59

My Question:
What is happen by timer wenn my connection is closed? (Timer::ring)

Thanks
Eugen

[Alexey]

OK, i will be looking forward to receiving your project.

[Eugen]

Alex, you need only this part of code.

private void button1_Click(object sender, System.EventArgs e)
{
//OPEN Connection
OracleConnection oraConnection = new OracleConnection();
oraConnection.UserId = "...";
oraConnection.Password = "...";
oraConnection.Server = "...";
oraConnection.Sid = "...";
oraConnection.Port = 1521;
oraConnection.Open();

//EXECUTE DB Operation
OracleCommand command = new OracleCommand();
command.Connection = oraConnection;
command.CommandText = "select dummy from dual";
OracleDataReader reader = command.ExecuteReader();
if ( (reader != null) && (!reader.IsClosed) )
try
{
if ( reader.Read() )
{string dummy = reader.GetString(0);}
}
finally {reader.Close();}

// CLOSE and dispose Connectionn
oraConnection.Close();
oraConnection.Dispose();
oraConnection = null;

MessageBox.Show("OK \n\nNow the OracleConnection is closed and disposed.\nPlease disconnect the network connection(leave the WLAN) and wait 6-10 Minutes without doing any further actions");
}

[Alexey]

Eugen, what we suppose is that you have Pooling=true in your ConnectionString by default, and pool checks itself whether it has spoiled connections inside and tries to delete them from itself. We are going to fix this problem in the next version.

[Eugen]

Thank you Alex,
It's OK now with Pooling=false

Eugen

[Alexey]

You are welcome.