title: Synchronize Oracle 11g xe database on azure vm with xe database on localhost
body: <p>I am currently developing a program for my final year project in college which requires database connectivity online and offline. I have a Oracle 11g xe database setup on a Microsoft Azure Windows Server 2012 VM and a similar database on my localhost. For security reasons the database stored on the localhost must be encrypted or made secure in some other way.</p>
  
  <p>Is there anyway through Oracle to keep the databases synchronized or will I have to achieve this through my program (java program with JDBC) ? Also is there anyway to secure or encrypt data stored in an Oracle 11g xe database ?</p>
  
  <p>Any help would be greatly appreciated.
  Thanks. </p>