Error while retriving the connection uisng JNDI and DATASOURCE

Question

hi guys,
i had a specifed data source in the the data-sources.xml of CONFIG folder of my application
<data-source class="oracle.jdbc.pool.OracleConnectionCacheImpl"
connection-driver="oracle.jdbc.driver.OracleDriver" location="jdbc/OracleDS_native"
name="OracleDS"
password="abc"
url="jdbc:oracle:thin:@BC354321:1521:CRADV1"
username="xyz"/>
Here is the program i had written to retrive the datasource
package javaapplication1;
import javax.naming.InitialContext;
import java.sql.*;
import javax.naming.Context;
import javax.sql.DataSource;
public class Main {
public Main() {
public static void main(String[] args) {
Connection con =null;
try {
InitialContext context = new InitialContext();
System.out.println("##########context********"+context);
DataSource ds = (DataSource)context.lookup("jdbc/OracleDS_native");
System.out.println("##########DataSource********"+ds);
con = ds.getConnection();
catch( Exception exception ) {
// process exception
exception.printStackTrace();
if(con!=null)
try{ con.close(); }
catch(SQLException e)
{ e.printStackTrace();}
ERROR:
##########context********javax.naming.InitialContext@2bbd86
javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:640)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:243)
at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:280)
at javax.naming.InitialContext.lookup(InitialContext.java:347)
at javaapplication1.Main.main(Main.java:35)
what might be the problem??
regards
Phani

Answer 1

Phani,
From the contents of your "data-sources.xml" file that you posted, it looks like you are using a pre-10.1.3.x version of OC4J (stand-alone?), so Jason's link may not be helpful.
Nonetheless, as Jason mentions, you do need to set some properties that need to be passed to the "InitialContext" class constructor. Probably something like the following.
[Note that the code is uncompiled and untested.]
Properties prp = new Properties();
prp.put(Context.INITIAL_CONTEXT_FACTORY,
        "com.evermind.server.rmi.RMIInitialContextFactory");
prp.put(Context.PROVIDER_URL, "ormi://oc4j_host");
prp.put(Context.SECURITY_PRINCIPAL, "user");
prp.put(Context.SECURITY_CREDENTIALS, "password");
Context ctx = new InitialContext(prp);
DataSource ds = (DataSource) context.lookup("jdbc/OracleDS_native");And replace "oc4j_host" with the name of your OC4J host machine as well as "user" and "password" with the appropriate values.
Note that you can probably use the OC4J admin user's details.
Good Luck,
Avi.