One problem with constraints missing in source and target database....

DB Gurus,
In my database I am going to export and import data using datapump but dont specify CONTENT clause.
so when I start working on my application, I came to know there are some constraints are missing. now how to check what are the constraints are missing from Source database and how to create those missing constraints on Target database?
Suggest me if you have any idea.


Create a database link between source and target schema.
Use all_/dba_/_user_constraints to generate the difference using MINUS operator.
something like this:
select owner,constraint_name,constraint_type from [email protected]
select owner,constraint_name,constraint_type from dba_constraints