Changes to Oracle EM 11G Database Control "Availability >> Backup Settings" don't stick
Enterprise Manager 11.2.0.4 Database Control Backup Settings are not Retained, Scheduled Backups Fail to Run (Doc ID 2185136.1)


  SOLUTION
  
  Download and apply one-off Patch 19316728 to the 11.2.0.4 database
  Oracle Home according to the instructions in the associated README
  file.


If you want to set the above setting manually, just log in to the server, and:

$ rman target /
RMAN&gt; configure controlfile autobackup on;