Folks,
Any idea of where can I find a specific file to differentiate JRE and Java JDK installed on AIX platform 
I am not sure what you are trying to do. What do you mean by "differentiate"? Please elaborate.
bakunin
The first thing that comes to mind to me is the java compiler, javac, which is part of the JDK. If you do not know the difference between the JDK and the JRE, a web search will enlighten you.
Regards,
Alister
usually JDK, and JRE gets installed in different paths. If I am the installer, I would keep them in ../JRE/.., ../JDK..xx/ paths. You can try $> which java | egrep -i 'JRE|JDK', to see if it belongs to which installation type.