title: import and export using impdp/expdp in oracle10g/11g
body: <p>I have two databases, one is production and second is a test. I want to export from production database and import into test database.
  My production db contains many users/schema out of which only few (&lt;10) schemas contain actual objects. 
  First time, i did a successful full export and full import into my test system without any problem.</p>
  
  <p>The idea is to do this on a periodic basis maybe once in couple of weeks. How can i do this process without creating a whole new test database again doing the re-import?? </p>