Difference between Oracle EBS 12.1.3 and Oracle EBS R12.2.0 ?

Difference between Oracle EBS 12.1.3 and Oracle EBS R12.2.0 ?

1)In R12.2 we have two kind of filesystems fs1(run filesystem) and fs2(patch filesystem) where as In R12.1.3 we only deal with one application filesystem.

2)In R12.2 we have the Application servers replaced by Weblogic server to manage the technology statck.
The 10.1.3 Home is replaced by FMW  (Fusion Middleware Home) i.e $FMW_HOME

3)The major change in R12.2 is involvement of Weblogic server to manager all the forms,oacore servers
where as in R12.1.3 we had the Application server 10.1.3 to manage the web home or Java Home

4)The adpatch(patching) in R 12.1.3 is replaced by adop(online patching) in R 12.2.4

5)adop utility involves 5 phases to apply a standard patch in Oracle EBS R12.2.4.

6)While installing Oracle EBS 12.2.0 ,It will ask for TWO PORT POOLS one for the run file system and another patch file system.

7)In oracle EBS 12.2.0 While starting and stop all services it will ask weblogic password in additional to apps.