InitialContext always takes 5 seconds on a WebLogic Cluster

Question

Hi,
I want to create a context on a cluster to lookup a EJB with JNDI. This works well but it always take 5 seconds, When I put 1 of the managed servers down, it will take even longer.
When I dont use a cluster it is really fast.
I also already changed the cluster algo. but no change in performance.
How can I speed up this initialContext.
thanks
protected static Context getInitialContext() throws NamingException {
Environment env = new Environment();
env.setInitialContextFactory( "weblogic.jndi.WLInitialContextFactory" );
env.setProviderURL( "t3://localhost:7101");
env.setRequestTimeout(1000L);
env.setRMIClientTimeout(1000L);
env.setEnableServerAffinity(true);
env.setProviderURL( "t3://193.176.63.36,193.176.63.37:7001");
env.setSecurityPrincipal( "weblogic");
env.setSecurityCredentials( "weblogic1");
return env.getInitialContext();
}

Answer 1

The problem is the so-called stringification process when you are locating objects. More information about this
process can be found here: http://www.javaworld.com/jw-02-1999/jw-02-enterprise.html and the javadoc
http://download.oracle.com/javase/1.4.2/docs/api/org/omg/IOP/IOR.html
Take the following test case, here we are looking up three different object:
- a JMS connection factory
- a JDBC datasource (for which stringification is done)
- a JMS Queue
The JMS connection factory and the JMS Queue are present in the client classpath, through the wljmsclient.jar.
The code for the test case looks as follows:
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import java.util.Hashtable;
public class Test {
    private static Context context;
    private static Object lookup;
    public Test() {
    public static void main(String[] args) {
        Hashtable hashtable = new Hashtable();
        hashtable.put(Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory");
        hashtable.put(Context.PROVIDER_URL, "t3://172.31.0.107:7002,172.31.0.107:7003");
        long begin = System.currentTimeMillis();
        try {
            context = new InitialContext(hashtable);
        } catch (NamingException e) {
            e.printStackTrace();
        long end = System.currentTimeMillis();
        long timeseconds = (end - begin) / 1000;
        System.out.println("initialcontext creation time " + timeseconds);
        begin = System.currentTimeMillis();
        try {
            lookup = context.lookup("jms/ConnectionFactory");
        } catch (NamingException e) {
            e.printStackTrace();
        end = System.currentTimeMillis();
        timeseconds = (end - begin) / 1000;
        System.out.println("lookup resource time " + timeseconds + ", object " + lookup);
        begin = System.currentTimeMillis();
        try {
            lookup = context.lookup("jdbc/exampleDS");
        } catch (NamingException e) {
            e.printStackTrace();
        end = System.currentTimeMillis();
        timeseconds = (end - begin) / 1000;
        System.out.println("lookup resource time " + timeseconds + ", object " + lookup);
        begin = System.currentTimeMillis();
        try {
            lookup = context.lookup("jms/VideotheekQueue");
        } catch (NamingException e) {
            e.printStackTrace();
        end = System.currentTimeMillis();
        timeseconds = (end - begin) / 1000;
        System.out.println("lookup resource time " + timeseconds + ", object " + lookup);
        begin = System.currentTimeMillis();
        try {
            lookup = context.lookup("jdbc/exampleDS");
        } catch (NamingException e) {
            e.printStackTrace();
        end = System.currentTimeMillis();
        timeseconds = (end - begin) / 1000;
        System.out.println("lookup resource time " + timeseconds + ", object " + lookup);
        begin = System.currentTimeMillis();
        try {
            lookup = context.lookup("ejb/Videotheek#model.logic.Videotheek");
        } catch (NamingException e) {
            e.printStackTrace();
        end = System.currentTimeMillis();
        timeseconds = (end - begin) / 1000;
        System.out.println("lookup resource time " + timeseconds + ", object " + lookup);
        Videotheek videotheek = (Videotheek) lookup;
        List<Persoon> personen = videotheek.getPersonen(null);
        if (personen != null) {
            for (Persoon persoon : personen) {
                System.out.println(persoon);
}When we run this the following output is generated:
initialcontext creation time 0
lookup resource time 0, object weblogic.jms.client.JMSConnectionFactory@d1fa5
lookup resource time 4, object IOR: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
lookup resource time 0, object VideotheekModule!VideotheekQueue
lookup resource time 0, object IOR: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 you can see the objects that do need to be stringified (what a word) do not take long to lookup but the datasource (weblogic.jdbc.common.internal._RemoteDataSource_Stub) does.
The second time the datasource is looked-up it uses the already calculated stringification.