We can switch between in server core installation and full installation in windows server 2012 just remove or install two features in server manager.
In this article we enable the archivelog and flashback in Oracle database 10g. The benefits of archivelog and flashback are:
1. We can able to take database backup online.
2. No Need to Down Oracle DB Server
3. We can better Manage our Backup Policy through RMAN
4. Limited DBA task
5. We can able to recover our database to a specific point-in-time