Upgrading to DB2® Version 10.1 involves the upgrade of your database applications and routines if changes in DB2 Version 10.1 impact your database applications and routines.
Upgrading your applications and routines involves the following actions:
Test whether your applications and routines perform as expected in a DB2 Version 10.1 testing environment. You do not need to upgrade your applications and routines if they run successfully.
Test your applications and routines in a DB2 Version 10.1 testing environment.
Verify that your applications and routines perform as expected in your DB2 Version 10.1 production environment before deploying them.
If your applications and routines use any functionality that is deprecated in DB2 Version 10.1, you should plan how to remove this functionality from your application code in the near future.
Also, you should consider adopting new functionality available in DB2 Version 10.1 to enhance functionality and improve performance.