Since the announcement of 12cR2 on-premises availability, the Oracle community become energetic and busy tweeting/blogging the new features, demonstrating installation & upgrades. Hence, I have decided to pick my favorite list of 12cR2 new features for Developers and & DBAs. Here is the high-level summary, until I write a detailed post for each feature ( excerpt from Oracle 12cR2 new features document).
This is a companion discussion topic for the original entry at https://blog.toadworld.com/2017/03/02/12cr2-new-features-for-developers-and-dbas-here-is-my-pick-part-1