Oracle Interview Questions


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1. How would you determine the time zone under which a database was operating?

2. Explain the use of setting GLOBAL_NAMES equal to TRUE?

3. What command would you use to encrypt a PL/SQL application?

4. Explain the difference between a FUNCTION, PROCEDURE and PACKAGE?

5. Explain the use of table functions?

6. Name three advisory statistics you can collect?

7. Where in the Oracle directory tree structure are audit traces placed?

8. Explain materialized views and how they are used?

9. When a user process fails, what background process cleans up after it?

10. What background process refreshes materialized views?

11. How would you determine what sessions are connected and what resources they are waiting for?

12. Describe what redo logs are?

13. How would you force a log switch?

14. Give two methods you could use to determine what DDL changes have been made?

15. What does coalescing a tablespace do?

16. What is the difference between a TEMPORARY tablespace and a PERMANENT tablespace?

17. Name a tablespace automatically created when you create a database?

18. When creating a user, what permissions must you grant to allow them to connect to the database?

19. How do you add a data file to a tablespace?

20. How do you resize a data file?

21. What view would you use to look at the size of a data file?

22. What view would you use to determine free space in a tablespace?

23. How would you determine who has added a row to a table?

24. How can you rebuild an index?

25. Explain what partitioning is and what its benefit is?

26. You have just compiled a PL/SQL package but got errors, how would you view the errors?

27. How can you gather statistics on a table?

28. How can you enable a trace for a session?

29. What is the difference between the SQL*Loader and IMPORT utilities?

30. Name two files used for network connection to a database?

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