Hi Nitesh,
Thank you for posting in Symantec community.
It's possible, However Perform these upgrade procedures on test computers before you implement the upgrade on production computers.
http://www.symantec.com/docs/TECH102547
Warning:
Do not upgrade without creating or being in possession of a well-formed disaster recovery file. Do not try this upgrade before moving your backed up keystore, server.xml file, and database out of the \Symantec\Symantec Endpoint Protection Manager\ directory. These files are deleted during the uninstallation process.