my project is based on oracle and visual basic(front end),which is the good tool for functional testing?kindly give me an idea.
Manual or automation tool? What have you looked at thus far?
I would perfer Winrunner as an automation tool.
I have no clue about using manual tools
Nothing is Impossible for a willing mind
I know that various tools from both Mercury and Compuware support oracle forms. You would have to speak with a sales rep with your specifics to see if a given tool will work in your situation.
Rational robot & TM (if they are still selling it) is a good option too. However details that you have given here are very little to suggest more than just the name.
It is not necessary to change. Survival is not mandatory -W Edwards Deming