Oracle OCI connectivity issue

Question

Hi All,
We have jave code, that resides in the same server as the Oracle DB( HP-Ux). It uses OCI driver to connect to the server.
jdbc.url=jdbc:oracle:oci8:@
jdbc.username=
jdbc.password=
These are the properties that had been set. The code was working fine in Oracle 9.i. On migrating the server to 10g we get an error saying that
java.java.sql.SQLException: SimpleDataSource:connect - java.sql.SQLException: ORA-01017: invalid username/password; logon denied.
OfCourse the basic idea would be that userid/pwd is not being passed. But we have not been setting the user id and pwd in 9i and it is working there, but not in 10g. So does OCI driver use the os userid/pwd or something for connecting.
Thanks in Advance,
Vignesh

Answer 1

No, we have no such file. In fact i just wrote a simple connection class. The code is as below.
import java.sql.Connection;
import java.sql.*;
class SimpleCon {
     public static void main(String args[]){
          getConnection();
     public static void getConnection() {
     try {
          Connection con = connect();
          System.out.println("Connected");
     } catch(SQLException ex) {
          ex.printStackTrace();
     public static Connection connect() throws SQLException
     final String methodSig = "SimpleDataSource:connect";
     String jdbcUrl = "jdbc:oracle:oci:@"     ;
     String jdbcUsername = ""     ;
     String jdbcPassword = "";
     Connection conn = null;
     try
     Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
     conn = DriverManager.getConnection
     (jdbcUrl, jdbcUsername, jdbcPassword);
               DatabaseMetaData dbm = conn.getMetaData();
               System.out.println(dbm.getUserName());
               System.out.println(dbm.getDriverName());
               System.out.println(dbm.getDriverVersion());
     //setConnectionProperties(conn);
     return conn;
     catch (SQLException e) {
     e.printStackTrace();
          System.err.println("SQL error: " + e.getErrorCode());
          System.err.println("SQL state: " + e.getSQLState());
          throw(e);
     }catch(Exception ie){
               ie.printStackTrace();
          return null;
This particular code works in HP-UX - Oracle 9.i . If we do not pass userid/pwd it usually connects in as OS user, and Oracle has a User id Setup corresponding to the os user.
But the same code does not work in Oracle 10g, even though we have the Oracle User corresponding to the OS user set up. If we pass that particular user id and pwd, it works fine.
Does it throw and light.
Thanks
Vignesh