connection pooling in weblogic

[prasad Chandrasekaran Iyer]

1)how do we create oracle connection pool when we start our weblogic server.
2)what is a factory in the design pattern sence.'
3)if our database is down, can we compile our entity bean java code?
can we build our entity bean?
can we deploy entity bean?
can we invoke methods of our entity bean from a client
please kindly help me out in finding answers for these questions

Thank u
prasad