Cannot create connection to Oracle database

Hello all,
I would like to create a winform that connects to an Oracle 10g database. I followed the below steps:
1- Create a Winform project
2- Go to Server Explorer>Data Connection to add a new connection
3-In the "Add Connection" window, change the data source to "Oracle database"
4- Type in the required information (server name, user, password)
5- when testing the connection, i get an error message telling:
ORA-12154: TNS: could not resolve the connect identifier specified
Please to note that I have:
       - 64bit OS, Visual Studio 2012
       - Visual Studio 2012 Version 11.0.61030.00 Update 4
       - Oracle client 10.2.0.4 for MS Windows 64bit
       - ODAC10.2
Any idea about the issue ?
Best regards,
Nassim

Hello,
No solution provided, instead resources. I believe the issue is in the connection string no matter which way you connnect.
As you can see on
this page for creating strong typed datasets there is not much to it and would recommend the following stated below.
The first thing to do is located the error (it is on this page) on
the following page, go through the checklist and see if anything there can help.
Lastly,
Oracle data provider will be removed in a future version of Visual Studio.
Please remember to mark the replies as answers if they help and unmark them if they provide no help, this will help others who are looking for solutions to the same or similar problem.

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2 #include <occi.h>
3 #include <iostream>
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5 using namespace std;
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28 }
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Edited by: [email protected] on 08.06.2010 10:34

Well i've found a post at a similar thread, where somebody told to try to compile and run the project in release mode.
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HostName = 10.20.3.19
SID = EDIREAD
Port = 1521
UserName = dbuser
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[root@iflexpau2217 EDIReader]# java try2
hi
prop is {HostName=10.20.3.19, Password=dbuser, UserName=dbuser, SID=EDIREAD, Port=1521}
In exception java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
Also I tried to connect with weblogic JDBC driver
Code is here:
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.sql.Blob;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
//import com.entrust.toolkit.util.ByteArray;
public class trial{
     public static void main(String args[]) throws IOException{
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String driverName = "weblogic.jdbc.oracle.OracleDriver";
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               trial.append(System.getProperty("line.separator"));
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error while trying with jdbc:
SQEXCEPTIN:[BEA][Oracle JDBC Driver]Error establishing socket to host and port: 10.20.3.19:1521. Reason: Connection refused

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