upgrade from 1211 to 2113

https://blogs.oracle.com/ptian/oracle-application-r12-1213-installation-on-linux64-bit  

http://www.runningoracle.com/product_info.php?products_id=402
http://ermanarslan.blogspot.in/2013/09/ebs-1211-to-1213-upgrade-steps.html
http://oracle-latest-technology.blogspot.in/2012/01/how-to-upgrade-oracle-ebs-r1211-to-1213.html