With EBS R12.2 Delta 6 will not display a warning message when using the ADOP utility. An additional check is made every time ADOP tool is invoked which checks for the recommended patches that are missing in the instance. This feature is ETCC and you will see something like this on the ADOP logs.
[PROCEDURE] [START 2015/04/27 14:27:57] Performing database sanity checks
[WARNING] ETCC: The following database fixes are not applied in node vmohstest001
14046443
14255128
16299727
16359751
17250794
17401353
18260550
18282562
18331812
18331850
18440047
18689530
18730542
19472320
19487147
19896336
Refer to My Oracle Support Knowledge Document 1594274.1 for instructions.
[PROCEDURE] [END 2015/04/27 14:27:57] Finished performing database sanity checks
[PROCEDURE] [START 2015/04/27 14:27:57] Performing database sanity checks
[WARNING] ETCC: The following database fixes are not applied in node vmohstest001
14046443
14255128
16299727
16359751
17250794
17401353
18260550
18282562
18331812
18331850
18440047
18689530
18730542
19472320
19487147
19896336
Refer to My Oracle Support Knowledge Document 1594274.1 for instructions.
[PROCEDURE] [END 2015/04/27 14:27:57] Finished performing database sanity checks
Recommendation is to review the below note and get all recommended patches applied.
Oracle E-Business Suite Release 12.2: Consolidated List of Patches and Technology Bug Fixes (Doc ID 1594274.1)
Note : please refer to the recent product documentation to know the latest changes.