Hi All, I am new to Oracle OAF development. I have completed Installation of JDeveloper as per Instructions and tried to create my first page . HelloWorld OAF Page. On Building the project I don't received any error but few warning. While Embedded OC4J launching http://XXXXXXX/OA_HTML/runregion.jsp , it is just running for long time and not showing anything. After waiting for 5 mins. Page timed out and shown below error. 500 Internal Server Error oracle.apps.fnd.common.AppsException: oracle.apps.fnd.common.PoolException: Exception creating new Poolable object. Please guide me how to resolve issue and execute first HelloWorld Page. Thanks!!