Unable to connect to Oracle database running on Windows machine from linux.

Question

Hi,
I'm not able to connect to oracle database running on Windows machine from Linux machine. I'm geting the below mentioned error. I have given below the code I used to connect to database and database propertes.Do I need to use any specific driver?
Please help me.
Thanks,
Sunjyoti
Code :
import oracle.jdbc.pool.OracleDataSource;
import java.sql.Connection;
import java.util.*;
import java.sql.*;
import java.io.*;
class try2{
public static void main(String args[]) {
try {
          System.out.println("hi");
// Load the properties file to get the connection information
Properties prop = new Properties();
prop.load(new FileInputStream("/home/sreejith/EDIReader/Connection.properties"));
// Create a OracleDataSource instance
OracleDataSource ods = new OracleDataSource();
System.out.println("prop is "+prop);
configureDataSource(ods, prop);
Connection conn=null;
// Create a connection object
conn = ods.getConnection();
     System.out.println("Connection is"+conn);
// Sets the auto-commit property for the connection to be false.
conn.setAutoCommit(false);
} catch (SQLException sqlEx){ // Handle SQL Errors
System.out.println("In exception "+sqlEx);
} catch(Exception excep) { // Handle other errors
System.out.println(" Exception "+ excep.toString());
private static void configureDataSource(OracleDataSource ods, Properties prop) {
// Database Host Name
ods.setServerName(prop.getProperty("HostName"));
// Set the database SID
ods.setDatabaseName(prop.getProperty("SID"));
// Set database port
ods.setPortNumber( new Integer( prop.getProperty("Port") ).intValue());
// Set the driver type
ods.setDriverType ("thin");
// Sets the user name
ods.setUser(prop.getProperty("UserName"));
// Sets the password
ods.setPassword(prop.getProperty("Password"));
Connection properties :
# Your Database Connection details
HostName = 10.20.3.19
SID = EDIREAD
Port = 1521
UserName = dbuser
Password = dbuser
Error I'm getting is
error while trying to connect with odbc datasource
[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{
          System.out.println("hi");
          Connection p_conn = null;
          PreparedStatement xml_insert = null;
          try {
     // Load the JDBC driver
               System.out.println("hi2");
     // String driverName = "oracle.jdbc.driver.OracleDriver";
String driverName = "weblogic.jdbc.oracle.OracleDriver";
     System.out.println("hi2");
     Class.forName(driverName);
     // Create a connection to the database
     String serverName = "10.20.3.19";
     String portNumber = "1521";
     String sid = "EDIREAD";
     //String url = "jdbc:oracle:thin:@" + serverName + ":" + portNumber + ":" + sid;
String url = "jdbc:bea:oracle://10.20.3.19:1521";
     String username = "dbuser";
     String password = "dbuser";
System.out.println("connection is:"+p_conn+"user name is"+username+"password is"+password);
     p_conn = DriverManager.getConnection(url, username, password);
     System.out.println("connection is:"+p_conn+"user name is"+username+"password is"+password);
          xml_insert=p_conn.prepareStatement("insert into PRTB_SUBUNIT (SUBUNT_ID,SUBUNT_SUB_UNIT,SUBUNT_PHYUNT_ID) values (?,?,?)");
          //InputStream in=null;
          File l_file=new File("/home/sreejith/EDIReader/propertyfiles/inputfile/BUG_10802_ES_CSB19_68.txt");
          BufferedReader input =null;
          input=new BufferedReader(new FileReader(l_file));
          String line = null;
          StringBuffer trial=new StringBuffer();
          while (( line = input.readLine()) != null){
               trial.append(line);
               trial.append(System.getProperty("line.separator"));
          //InputStream is = new BufferedInputStream(new FileInputStream(l_file));
          System.out.println(trial.toString());
          //Blob b ;
          //byte[] bytes=trial.toString().getBytes();
          //System.out.println("Size-->"+bytes.length);
          xml_insert.setString(1,new String("SpecailChar"));
          //xml_insert.setBinaryStream(2,new ByteArrayInputStream(bytes),15920);
          xml_insert.setString(3,"SpecailChar");
          xml_insert.executeUpdate();
          p_conn.commit();
          } catch (ClassNotFoundException e) {
               System.out.println("ClassNotFoundException:"+e.getMessage());
          // Could not find the database driver
          } catch (SQLException e) {
               System.out.println("SQEXCEPTIN:"+e.getMessage());
          // Could not connect to the database
          }catch (FileNotFoundException e) {
               System.out.println("filenot found:"+e.getMessage());
          // Could not connect to the database
Error I'm getting is
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

Answer 1

Is the Windows firewall active? Have you enabled the port on the firewall, if it is?