Well, Oracle Database 12c is not yet available but new
features seems to be popping out in MOS. While troubleshooting Oracle
Enterprise Manager Cloud Control 12c startup issues I came across Oracle Database 12c new
feature called “Identity Columns”.
An Identity Columns is auto-incremented at the time of
insertion just like in SQL Server. Going forward, I think you will not use
Oracle Sequence anymore to generate unique values instead use Identity Columns.
For more information on this read:
Happy reading!!!