Oracle Application Framework Interview Questions and Answers

1. What is Oracle Application Framework (OAF)?

Ans: Oracle Application Framework (OAF) is a framework used to develop web-based applications on top of Oracle E-Business Suite.

2. What is the architecture of OAF?

Ans: OAF follows the Model-View-Controller (MVC) design pattern, where the Model represents the business logic, the View represents the user interface, and the Controller manages the interaction between them.

3. Explain the key components of OAF.

Ans: The key components of OAF include Application Module, View Object, Controller, Page Layouts, Regions, and Business Components.

4. What is the purpose of an Application Module?

Ans: The Application Module is responsible for managing transactions, data access, and business logic in an OAF application.

5. How do you define a View Object in OAF?

Ans: A View Object represents a SQL query or a view, providing data access and manipulation capabilities within an OAF application.

6. What are Page Layouts in OAF?

Ans: Page Layouts define the structure and organization of components on a page, such as regions, buttons, fields, and menus.

7. Explain the role of Business Components in OAF.

Ans: Business Components (BCs) encapsulate business logic, data validation, and data manipulation functionalities in an OAF application.

8. What is Personalization in OAF?

Ans: Personalization allows users to customize the behavior and appearance of OAF pages without modifying the underlying code.

9. How can you customize the look and feel of an OAF application?

Ans: OAF provides skinning and customization features using CSS stylesheets to modify the look and feel of pages, regions, and components.

10. How do you optimize performance in OAF?

Ans: Performance optimization techniques in OAF include using bind variables, caching, tuning View Objects, and minimizing database round trips.

11.What is a Task Flow in OAF?

Ans: A Task Flow represents a series of pages and navigation flows within an OAF application, guiding users through specific processes or workflows.

12. How can you handle validation in OAF?

Ans: OAF provides built-in validation capabilities, allowing developers to define validation rules for fields and components using validations and error messages.

13. Explain the difference between View Object and View Link in OAF.

Ans: A View Object represents a SQL query or view, while a View Link defines the relationship between multiple View Objects to enable data navigation and retrieval.

14. What are the different types of View Objects in OAF?

Ans: OAF supports various types of View Objects, such as Entity Objects, Association Objects, and List of Values (LOV) View Objects.

15. How can you pass parameters between pages in OAF?

Ans: Parameters can be passed between pages in OAF using global variables, request parameters, or the OAF page context.

16. How do you handle exceptions and error handling in OAF?

Ans: OAF provides exception handling mechanisms using try-catch blocks, error messages, and error handling frameworks like OAException.

17. Explain the concept of partial page rendering in OAF.

Ans: Partial page rendering in OAF allows specific regions or components to be refreshed dynamically without refreshing the entire page, improving performance and user experience.

18. What is the difference between dependent and independent concurrent programs in OAF?

Ans: Dependent concurrent programs rely on the completion of other concurrent programs, while independent concurrent programs can run standalone without dependencies.

19. How do you create a custom OAF page?

Ans: Custom OAF pages can be created by defining a new page layout, adding regions and components, and configuring controller logic.

20. What are the key debugging techniques available in OAF?

Ans: OAF provides debugging options like logging, enabling diagnostic mode, and using the OA Framework Developer's Guide for troubleshooting.

21. How do you handle security in OAF applications?

Ans: OAF offers security features such as role-based access control, data encryption, secure communication protocols, and user authentication mechanisms.

22. Explain the role of Business Events in OAF.

Ans: Business Events allow OAF applications to communicate with other applications or components by publishing and subscribing to specific events.

23. How can you extend or customize standard OAF functionality?

Ans: OAF provides extension points, personalization, and customizations using extension interfaces, custom components, and event subscriptions.

24. What are the advantages of using OAF over other frameworks?

Ans: OAF provides seamless integration with Oracle E-Business Suite, extensive pre-built components, a rich development environment, and strong support for enterprise-grade applications.

25. How can you handle multi-lingual support in OAF applications?

Ans: OAF supports multi-lingual applications by utilizing resource bundles, language-specific properties files, and locale-specific configurations.