How would you go about increasing the buffer cache hit 
ratio?
0. Explain the difference between a hot backup and a cold 
backup and the benefits associated with each 


1. You have just had to restore from backup and do not have 
any control files. How would you go about bringing up this 
database? 


2. How do you switch from an init.ora file to a spfile?


3. Explain the difference between a data block, an extent 
and a segment. 


4. Give two examples of how you might determine the 
structure of the table DEPT. 


5. Where would you look for errors from the database engine? 


6. Compare and contrast TRUNCATE and DELETE for a table.


7. Give the reasoning behind using an index.


8. Give the two types of tables involved in producing a star 
schema and the type of data they hold. 


9. What type of index should you use on a fact table? 


10. Give two examples of referential integrity constraints.


11. A table is classified as a parent table and you want to 
drop and re-create it. How would you do this without 
affecting the children tables?


12. Explain the difference between ARCHIVELOG mode and 
NOARCHIVELOG mode and the benefits and disadvantages to 
each. 


13. What command would you use to create a backup control 
file?


14. Give the stages of instance startup to a usable state 
where normal users may access it. 


15. What column differentiates the V$ views to the GV$ views 
and how? 


16. How would you go about generating an EXPLAIN plan?