Thanks Przytula,
I have included the db2profile in the .profile and executed the .profile. Then I could open the control ceter.
One doubt, I have is everytime, I logon I am executing .profile with out which control center is not working. Actually .profile should be automatically run when we logon to the system which is not happening.
How to execute the .profile automatically when we logon to the system (AIX on P-Series)
Thanks in advance