Quote Originally Posted by sumit View Post
Yes I just need to enable the constraint as I already have disabled. I know that. My question is why import is trying to add the constraint?
Oracle's import utility includes the "contraints" parameter which default value is "yes" therefore if you do not specify "contraints=no" you are actually telling Oracle that you want the contraints added.

If your strategy is to manually handle the contraints after the import gets done then you should include "contraints=no".