Oracle Release 12.1 Documentation Library

Oracle Library 

Below is the Oracle Library Link for Oracle R.12, You can get all the documentation that is required. 

http://docs.oracle.com/cd/B53825_08/current/html/docset.html

http://docs.oracle.com/cd/B53825_08/current/html/docset.html

For more details please visit http://www.oracle.com/
                                                 http://docs.oracle.com/