1) Expalin about ADF, and ADF Model Layer 2) what is JSR 227 3) Enity Object Life Cycle 4) Entity States - Create, Insert, Modified, Unmodified , Remove 5) AM Pooling and Connection Pooling 6) Struck Threads 7) What is Reference Cursor pl/sql 8) What is polymorphism, How would you acheive it in java. 9) Exception handling model layer, what are the ways to dispaly error messages to the user. 10) What happens on when application module pooling passivation failure ? does it give new instance to new user ? 11) Change Indicator , Refresh on Insert and Refresh on Update on Entity Object. 12) How to fix, Another user has modified the collection error. 13) Major difference between async and sync webservices on wsdl file (multi port types). 14) AM Life Cycle - 15) Which taskflows are bookmarkable ? and why ? 16) ADF Faces what happens when immediate, autosubmit set on a component, and only autosubmit set on the component. Example two input components, input one with immediate, autosubmit set to true second input comonent with only autosubmit set to true now two buttons submit, reset are on form with partial triggers to component 1 and component 2. what happens when submit and reset buttons in action. explain the life cycle. 17) How to tune querys , explain about query tuning, TKPROF.