Hi , I am getting above warning in alert log .
Sat Jul 05 01:34:12 2014 WARNING: db_recovery_file_dest is same as db_create_file_dest
This is harmless bug 3837794 that has been fixed in 10.2. You'll have to review Metalink for reference to the bug. However, the report essentially indicates that the error message can be ignored.
Oracle Metalink id: https://support.oracle.com/epmos/faces/SearchDocDisplay?_adf.ctrl-state=hkq9yx2lq_4&_afrLoop=176061607255375