Critical Patch Updates:

Critical Patch Updates are collections of security fixes for Oracle products. They are available to customers with valid support contracts. They are released on the Tuesday closest to the 17th day of January, April, July and October. The next four dates are:

• 16 January 2018
• 17 April 2018
• 17 July 2018
• 16 October 2018

CPU Cumulative:

Oracle tries to make Critical Patch Updates cumulative; that is each Critical Patch Update contains the security fixes from all previous Critical Patch Updates. In practical terms, for those products that receive cumulative fixes, the latest Critical Patch Update is the only one that needs to be applied when solely using these products, as it contains all required fixes.

select * from sys.registry$history;

ACTION_TIME                         ACTION                         NAMESPACE                      VERSION                 ID COMMENTS

----------------------------------- ------------------------------ ------------------------------ --------------- ---------- ----------------------------------------

31-AUG-12 05.04.39.313477 PM        VIEW INVALIDATE                                                                  8289601 view invalidation

31-AUG-12 05.04.39.610749 PM        UPGRADE                        SERVER                         11.2.0.3.0                 Upgraded from 11.2.0.1.0

Thank you, Ram