How to use Muticast testing utilities with WLS ??

Hello,
          Does anyone here know how we can use the muticast testing utilities that are
          avilable with WLS ??
          I have run it, but I don't understand how to use it...
          What will it show ??
          WIll it show that there is a conflict in the muticast address ??
          Will it show something else ??
          Whenever I run it.... it just writes a bunch of messages ot the screen.
          What does that mean ??
          Is there any documentation available on this utlity ??
          Please help.
          -Anu

see below
          If your multicast is properly setup each server reports that a new
          neighbor is found and it's able to accept messages from the other server.
          java utils.MulticastTest -N S1 -A 224.0.0.1
          ***** WARNING ***** WARNING ***** WARNING *****
          Do NOT use the same multicast address as a running WLS cluster.
          Starting test. Hit any key to abort
          Using multicast address 224.0.0.1:7001
          Will send messages under the name S1 every 2 seconds
          Will print warning every 600 seconds if no messages are received
          New Neighbor s2 found on message number 2
          Duplicate message from s2: 2
          Duplicate message from s2: 2
          Duplicate message from s2: 2
          Duplicate message from s2: 2
          Duplicate message from S1: 1
          Duplicate message from S1: 1
          Duplicate message from S1: 1
          Duplicate message from S1: 1
          I (S1) sent message num 1
          Received message 3 from s2
          Duplicate message from s2: 3
          Duplicate message from s2: 3
          Duplicate message from s2: 3
          Duplicate message from s2: 3
          Received message 2 from S1
          java utils.MulticastTest -N S2 -A 224.0.0.1
          ***** WARNING ***** WARNING ***** WARNING *****
          Do NOT use the same multicast address as a running WLS cluster.
          Starting test. Hit any key to abort
          Using multicast address 224.0.0.1:7001
          Will send messages under the name s2 every 2 seconds
          Will print warning every 600 seconds if no messages are received
          Duplicate message from s2: 1
          Duplicate message from s2: 1
          Duplicate message from s2: 1
          Duplicate message from s2: 1
          I (s2) sent message num 1
          Received message 2 from s2
          Duplicate message from s2: 2
          Duplicate message from s2: 2
          Duplicate message from s2: 2
          Duplicate message from s2: 2
          I (s2) sent message num 2
          New Neighbor S1 found on message number 1
          Duplicate message from S1: 1
          Duplicate message from S1: 1
          Duplicate message from S1: 1
          Duplicate message from S1: 1
          Received message 3 from s2
          Duplicate message from s2: 3
          Duplicate message from s2: 3
          Duplicate message from s2: 3
          Duplicate message from s2: 3
          I (s2) sent message num 3
          Received message 2 from S1
          Duplicate message from S1: 2
          Duplicate message from S1: 2
          Duplicate message from S1: 2
          Duplicate message from S1: 2
          Received message 4 from s2
          Duplicate message from s2: 4
          Duplicate message from s2: 4
          Duplicate message from s2: 4
          Duplicate message from s2: 4
          I (s2) sent message num 4
          Anu Kulatunga wrote:
          > Hello,
          >
          > Does anyone here know how we can use the muticast testing utilities that are
          > avilable with WLS ??
          >
          > I have run it, but I don't understand how to use it...
          >
          > What will it show ??
          >
          > WIll it show that there is a conflict in the muticast address ??
          >
          > Will it show something else ??
          >
          > Whenever I run it.... it just writes a bunch of messages ot the screen.
          >
          > What does that mean ??
          >
          > Is there any documentation available on this utlity ??
          >
          > Please help.
          > -Anu
          >
          >
          >
          >
          >

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In this case BEA recommends to use dangerous
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Introduction
============
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// Right implementation of unwrap()
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public OracleConnection unwrap() {
return physicalConnection;
Workaround
==========
1. Develop your own OracleConnection wrapper class:
import oracle.jdbc.OracleConnection;
import weblogic.jdbc.extensions.WLConnection;
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public MyOracleConnectionImpl(OracleConnection connection)
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puclic abstract class MyConnectionSource {
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Hello Eugene Voytitsky,
Thanks Eugene Voytitsky for your idea
I have tried the solution suggested by You, but it did not work.
It still throws ClassCastException.
I am sorry for posting the whole code of two classes below.
I did this to give you more clarity.
I am also indicating the place where the exception was thrown..
Please let me know if I am doing something wrong.
OracleConnection Wrapper class
package ejbTesting;
// sql imports
import java.sql.CallableStatement;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.Statement;
// util imports
import java.util.Map;
import java.util.Properties;
// imports from Oracle Driver Classes
import oracle.jdbc.OracleConnection;
import oracle.jdbc.OracleOCIFailover;
import oracle.jdbc.OracleSavepoint;
// import from Weblogic extensions
import weblogic.jdbc.extensions.WLConnection;
public class WeblogicConnectionWrapper implements OracleConnection
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          // Only this weblogic.jdbc.extensions.WLConnection CAN BE type casted
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throws SQLException
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public CallableStatement prepareCall(String s, int i, int j)
throws SQLException
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public CallableStatement prepareCallWithKey(String s)
throws SQLException
return connection.prepareCallWithKey(s);
public PreparedStatement prepareStatement(String s)
throws SQLException
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public PreparedStatement prepareStatement(String s, int i, int j)
throws SQLException
return connection.prepareStatement(s, i, j);
public PreparedStatement prepareStatementWithKey(String s)
throws SQLException
return connection.prepareStatementWithKey(s);
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throws SQLException
connection.purgeExplicitCache();
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throws SQLException
connection.purgeImplicitCache();
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throws SQLException
connection.putDescriptor(s, obj);
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s1)
connection.registerApiDescription(s, word0, word1, s1);
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throws SQLException
connection.registerSQLType(s, class1);
public void registerSQLType(String s, String s1)
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connection.registerSQLType(s, s1);
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obj)
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throws SQLException
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throws SQLException
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throws SQLException
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throws SQLException
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connection.setSessionTimeZone(s);
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connection.setStmtCacheSize(i, flag);
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public void setUsingXAFlag(boolean flag)
connection.setUsingXAFlag(flag);
public void setWrapper(OracleConnection oracleconnection)
connection.setWrapper(oracleconnection);
public void setXAErrorFlag(boolean flag)
connection.setXAErrorFlag(flag);
public void shutdown(int i)
throws SQLException
connection.shutdown(i);
public void startup(String s, int i)
throws SQLException
connection.startup(s, i);
Util class to get Wrapped Connections from
datasource
package ejbTesting;
// j2ee imports
import javax.naming.InitialContext;
import javax.sql.DataSource;
// sql imports
import java.sql.Connection;
// imports from Oracle Driver Classes
import oracle.jdbc.OracleConnection;
* Wrapper class for the DataSource Connection from Weblogic pool
public class DataSourceConnectionWrapper
     // datasource variable
     private static transient DataSource datasource = null;
     private static String dbName = "jdbc/workbench";
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     public static Connection getConnection()
          try
               // initialsing the datasource object
               initialiseDataSource ();
               // Getting a connection from the datasource
               Connection con = datasource.getConnection( );
               // wrapping it custom wrapper class and
               // returning the connection object
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          catch(Exception exception )
               exception.printStackTrace();
               return null;
     private static void initialiseDataSource( ) throws Exception
if ( datasource == null )
try
InitialContext ic = new InitialContext( );
datasource = (DataSource) ic.lookup( dbName );
catch (Exception ne )
throw new Exception( "NamingException while looking up DataSource with
JNDI name" +
dbName + ": \n" + ne.getMessage( ) );
Exception Stack Trace
The line 46 in DataSourceConnectionWrapper
corresponds to
return new WeblogicConnectionWrapper((OracleConnection)con);
Which I feel is logical as the connection which we get from Weblogic
datasource cannot be type casted to OracleConnection
java.lang.ClassCastException: weblogic.jdbc.pool.Connection
at ejbTesting.DataSourceConnectionWrapper.getConnection(DataSourceConnectionWrapper.java:46)

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