http://blog.dbi-services.com/tag/oracle-12c/
http://www.dbaexpert.com/
http://oraclehandson.wordpress.com/
http://indiandba.blogspot.com/
http://www.oracle-class.com/
http://www.oracletech.com.au/
http://www.gokhanatil.com/
http://www.databasejournal.com/article.php/2205281
http://onlineappsdba.com/
http://allthingsoracle.com/
http://uhesse.com/
http://dbasolutions.wikispaces.com/
http://www.online-database.eu/
http://www.askmlabs.com