Oracle Fusion Applications- Basic Architecture

Oracle Fusion Applications are built on Fusion Middleware stack.

A very basic deployment architecture can be depicted by the below figure. It will consist of two nodes:

Basic 2 Node Architecture

1. IDM Node
It is used for User and Role Management. All the user and privileges of FA are stored in IDM node. It performs below functions:

IDM Node

- Authentication, Authorization and auditing mechanisms
- Roles and entitlements
- Directory Services
- User Provisioning
- Policy Stores
- Session Management
- Single Sign on / Federation


2) FA Node
It will include best in class Product Families like:
- Oracle Fusion Financials
- Oracle Fusion HCM
- Oracle Fusion Procurement
- Oracle Fusion SCM
- Oracler Fusion CRM

FA Node

Read more on Product and Product offerings in next Post

Test Database Connectivity from Weblogic Server to the Database

This post helps us to establish connectivity to the database from the Weblogic Server.

Go to MWHOME location

cd <WEBLOGIC HOME>/server/bin
set the environment
. ./setWLSEnv.sh

Run the below to test the connectivity.

java utils.dbping ORACLE_THIN <DB_USER_NAME> <DB_PASSWORD> <DB_HOST>:<DB_PORT>:<SID>

This will test the connection and display the results.

The result would be as below for a successful connection :

java utils.dbping ORACLE_THIN <DB_USER_NAME> <DB_PASSWORD> <DB_HOST>:<DB_PORT>:<SID>

**** Success!!! ****

You can connect to the database in your app using:

  java.util.Properties props = new java.util.Properties();
  props.put("user", "<DB_USER>");
  props.put("password", "<PASSWORD>");
  java.sql.Driver d =
    Class.forName("oracle.jdbc.OracleDriver").newInstance();
  java.sql.Connection conn =
    Driver.connect("<DB_USER>", props);

Mac Love

After years of waiting and dreaming I was able to get my love home. It was a life changing experience, so beautiful, full of colors and sound it was. 
Like a new bride it was sitting on my bed, I was too scared to do anything as I did not know how it will react to my touch.
Finally I gathered courage to open it, it prompted me to enter name, and that was the moment when I realized it's mine now.
Amit's Mac pro !! :) :)

JMS Client could not establish connection with weblogic server

Issue : 

When an external application tries to establish connection to the weblogic JMS server, the connection does not seem to work.

We observe the below error in the logs :


weblogic.jms.common.JMSException: weblogic.messaging.dispatcher.DispatcherException: Could not register a DisconnectListener for [Delegate(253822924) [weblogic.iiop.IOR[RMI:weblogic.messaging.dispatcher.DispatcherImpl:0000000000000000] @<ip addres>:48508, <0, null>]] for weblogic.jms.C:vmohsitut151:od8:-419rn532v3nc
        at weblogic.jms.frontend.FEConnectionFactory.connectionCreateInternal(FEConnectionFactory.java:371)
        at weblogic.jms.frontend.FEConnectionFactoryImpl.connectionCreateInternal(FEConnectionFactoryImpl.java:79)
        at weblogic.jms.frontend.FEConnectionFactoryImpl.connectionCreateRequest(FEConnectionFactoryImpl.java:62)
        at weblogic.jms.frontend.FEConnectionFactoryImpl_WLSkel.invoke(Unknown Source)
        at weblogic.rmi.internal.BasicServerRef.invoke(BasicServerRef.java:667)
        at weblogic.rmi.cluster.ClusterableServerRef.invoke(ClusterableServerRef.java:230)
        at weblogic.rmi.internal.BasicServerRef$1.run(BasicServerRef.java:522)
        at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:363)
        at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:146)
        at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:518)
        at weblogic.rmi.internal.wls.WLSExecuteRequest.run(WLSExecuteRequest.java:118)
        at weblogic.work.ExecuteThread.execute(ExecuteThread.java:263)
        at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)
Caused by: weblogic.messaging.dispatcher.DispatcherException: Could not register a DisconnectListener for [Delegate(253822924) [weblogic.iiop.IOR[RMI:weblogic.messaging.dispatcher.DispatcherImpl:0000000000000000] @<ip addres>:48508, <0, null>]] for weblogic.jms.C:vmohsitut151:od8:-419rn532v3nc
        at weblogic.messaging.dispatcher.DispatcherWrapperState.addPeerGoneListener(DispatcherWrapperState.java:412)
        at weblogic.messaging.dispatcher.DispatcherWrapperState.<init>(DispatcherWrapperState.java:79)
        at weblogic.messaging.dispatcher.DispatcherManager.dispatcherAdd(DispatcherManager.java:222)
        at weblogic.messaging.dispatcher.DispatcherManager.addDispatcherReference(DispatcherManager.java:118)
        at weblogic.jms.dispatcher.JMSDispatcherManager.addDispatcherReference(JMSDispatcherManager.java:187)
        at weblogic.jms.frontend.FEConnectionFactory.connectionCreateInternal(FEConnectionFactory.java:368)
        ... 12 more
Caused by: weblogic.rmi.extensions.DisconnectMonitorUnavailableException: Could not register a DisconnectListener for [Delegate(253822924) [weblogic.iiop.IOR[RMI:weblogic.messaging.dispatcher.DispatcherImpl:0000000000000000] @<ip addres>:48508, <0, null>]]
        at weblogic.rmi.extensions.DisconnectMonitorListImpl.addDisconnectListener(DisconnectMonitorListImpl.java:83)
        at weblogic.messaging.dispatcher.DispatcherWrapperState.addPeerGoneListener(DispatcherWrapperState.java:409)
        ... 17 more



Observations made : 

This issue does not occur if the source client ( from where the connection to WLS JMS is made ) and Weblogic server are in the same network subnet.

The above issue has been observed under two conditions :

--> If these 2 systems are on different network
or
--> If the two systems are on different subnet in the same network

Solution : 

On the client side, Try to find out which weblogic jar file is being used to make the connection.

If the wlclient.jar file is used for making the connection, then this is the root cause of the issue. Instead of using the wlclient.jar, please use wlthint3client.jar and then try to make a connection to the weblogic JMS.

In our case, wlclient.jar file was being used and we replaced it with wlthint3client.jar

This resolved the issue.

After making the changes, our application file which made connection to JMS looked like below :

#$clp="${clp}:${lib_dir}/wlclient.jar";

$clp="${clp}:${lib_dir}/wlthint3client.jar";