You have to set a property named oracle.net.tns_admin
to point to the location of the folder containing your tnsnames.ora
file. Then you specify the entry from that file after the @
sign in your DB URL. Check example below. You can find more information here: Data sources and URLs - Oracle Documentation
import java.sql.*;
public class Main {
public static void main(String[] args) throws Exception {
System.setProperty("oracle.net.tns_admin", "C:/app/product/11.2.0/client_1/NETWORK/ADMIN");
String dbURL = "jdbc:oracle:thin:@ENTRY_FROM_TNSNAMES";
Class.forName ("oracle.jdbc.OracleDriver");
Connection conn = null;
Statement stmt = null;
try {
conn = DriverManager.getConnection(dbURL, "your_user_name", "your_password");
System.out.println("Connection established");
stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("SELECT dummy FROM dual");
if (rs.next()) {
System.out.println(rs.getString(1));
}
} catch (Exception e) {
e.printStackTrace();
}
finally {
if (stmt != null) try { stmt.close(); } catch (Exception e) {}
if (conn != null) try { conn.close(); } catch (Exception e) {}
}
}
}
Example entry from tnsnames.ora
file:
my_net_service_name= (DESCRIPTION= (ADDRESS=(some address here)) (CONNECT_DATA= (SID=some_SID_name)))
Where my_net_service_name
string is what you have to subsitite for ENTRY_FROM_TNSNAMES
from my Java example.