Thanks Emil and Jannus.
Let me tell you when we are trying to connect to a queue which is already exisiting in our PO, the channel works fine both for inbound and outbound cases. But when we are are trying to connect it to a queue which is created on another netweaver stack outside of PO then we are getting initial context error.
We have changed the port to 50204 and also used 'force_remote = true' in the initial context parameter but now we are getting a different error (attached below).
A channel error occurred. Detailed error (if any) : com.sap.engine.services.rmi_p4.exception.P4BaseRuntimeException: Unexpected exception at com.sap.engine.services.rmi_p4.server.P4ObjectBrokerServerImpl.getException(P4ObjectBrokerServerImpl.java:1328) at com.sap.engine.services.rmi_p4.server.P4ObjectBrokerServerImpl.getException(P4ObjectBrokerServerImpl.java:1305) at com.sap.engine.services.rmi_p4.reflect.P4InvocationHandler.invokeInternal(P4InvocationHandler.java:160) at com.sap.engine.services.rmi_p4.reflect.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:52) at com.sun.proxy.$Proxy3426.createQueueConnection(Unknown Source) at com.sap.aii.adapter.jms.core.connector.ConnectorImpl.createConnection(ConnectorImpl.java:526) at com.sap.aii.adapter.jms.core.connector.ConnectorImpl.buildConnection(ConnectorImpl.java:451) at com.sap.aii.adapter.jms.core.connector.ConnectorImpl.doConnect(ConnectorImpl.java:409) at com.sap.aii.adapter.jms.core.connector.JndiConnectorImpl.doConnect(JndiConnectorImpl.java:198) at com.sap.aii.adapter.jms.core.connector.ConnectorImpl.connectIfDisconnected(ConnectorImpl.java:230) at com.sap.aii.adapter.jms.core.connector.ConnectorImpl.connect(ConnectorImpl.java:213) at com.sap.aii.adapter.jms.core.channel.ChannelImpl.doStart(ChannelImpl.java:294) at com.sap.aii.adapter.jms.core.channel.ChannelImpl.start(ChannelImpl.java:168) at com.sap.aii.adapter.jms.core.channel.AdapterImpl.doAddUpdateChannel(AdapterImpl.java:901) at com.sap.aii.adapter.jms.core.channel.AdapterImpl.addOrReplaceChannel(AdapterImpl.java:837) at com.sap.aii.adapter.jms.core.channel.AdapterImpl.doStartCpaChannels(AdapterImpl.java:1052) at com.sap.aii.adapter.jms.core.channel.AdapterImpl$2.invoke(AdapterImpl.java:1002) at com.sap.aii.af.lib.scheduler.JobBroker$Worker.run(JobBroker.java:529) at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37) at java.security.AccessController.doPrivileged(Native Method) at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:185) at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:302) Caused by: java.lang.ClassNotFoundException: com.sap.jms.client.connection.ConnectionProxy ------------------------- Loader Info ------------------------- ClassLoader name: [service:com.sap.aii.adapter.jms.svc] Loader hash code: 42ff1452 Living status: alive Direct parent loaders: [system:Frame] [interface:com.sap.aii.af.ms.ifc] [service:com.sap.aii.adapter.xi.svc] [library:com.sap.aii.adapter.lib] Resources: /usr/sap/PD4/J09/j2ee/cluster/bin/services/com.sap.aii.adapter.jms.svc/lib/com.sap.aii.adapter.jms.svc_api.jar --------------------------------------------------------------- at com.sap.engine.boot.loader.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:278) at com.sap.engine.boot.loader.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:247) at com.sap.engine.services.rmi_p4.MarshalInputStream.resolveClass(MarshalInputStream.java:114) at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1600) at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1505) at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1759) at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1338) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:358) at com.sap.engine.services.rmi_p4.reflect.P4InvocationHandler.readResult(P4InvocationHandler.java:302) at com.sap.engine.services.rmi_p4.reflect.P4InvocationHandler.invokeInternal(P4InvocationHandler.java:138) ...