OracleAS 10.1.3 problem on accessing MBean from remote Java client

From: Jimmy <jimmy_please_at_yahoo.com>
Date: 7 Feb 2005 15:48:34 -0800
Message-ID: <1107820114.556725.4570@l41g2000cwc.googlegroups.com>

Has anyone tried using developer's preview 3? I'm having problem to invoke method in AggreMBean. No luck yet find the API for DMS either (i.e. need doc on oracle.dms.jmx.NamedValue). The following is the exception I'm getting, the descriptions from JMX console and the simple JMX client's code.

>> Exception in thread "main" javax.management.ReflectionException: The
method null.getTableNames could not be found
>> Caused by: java.lang.NoSuchMethodException:
oracle.dms.jmx.SpyMBean.getTableNames(java.lang.String, oracle.dms.jmx.NamedValue, oracle.dms.jmx.NamedValue)

---

According to the JMX console ...

Method name

• getTableNames
  • Gets an array of table names Parameters contexts
  • oracle.dms.jmx.NamedValue[]
  • a list of name-value pairs containing auxilary information for this Return type
• java.lang.String

  ---

import java.rmi.RemoteException;
import java.util.Hashtable;

import javax.ejb.CreateException;
import javax.management.ObjectName;
import javax.management.j2ee.Management;
import javax.management.j2ee.ManagementHome;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.rmi.PortableRemoteObject;

import oracle.dms.jmx.NamedValue;
import oracle.dms.jmx.NamedValueSupport;

public class MyOracleASJMXClient {

    public static void main(String[] args) throws Exception {

        Hashtable env = new Hashtable();
        String url = "ormi://localhost:23791/default";
        env.put(Context.PROVIDER_URL, url);
        env.put(Context.SECURITY_PRINCIPAL, "admin");
        env.put(Context.SECURITY_CREDENTIALS, "welcome");

        System.setProperty(Context.INITIAL_CONTEXT_FACTORY,

"com.evermind.server.ApplicationClientInitialContextFactory");

        Object hm;
        try {
            Context ctx = new InitialContext(env);
            hm = ctx.lookup("java:comp/env/ejb/mgmt/MEJB");
        } catch (NamingException ne) {
            throw ne;
        }

        ManagementHome mgmtHome = (ManagementHome)
PortableRemoteObject.narrow(
                hm, ManagementHome.class);

        try {
            Management mejb = mgmtHome.create();

            ObjectName objName = new
ObjectName("default:type=AggreMBean");
            NamedValue namedValue = new NamedValueSupport("table",
                    "oc4j_ejb_method");
            Object retObj = mejb.invoke(objName, "getTableNames", new
Object[] {
                    null, null, null }, new String[] {
"java.lang.String",
                    "oracle.dms.jmx.NamedValue",

"oracle.dms.jmx.NamedValue" });

        } catch (RemoteException re) {
            re.printStackTrace();
        } catch (CreateException ce) {
            ce.printStackTrace();
        }

    }
} Received on Mon Feb 07 2005 - 17:48:34 CST