The standard shell in AIX is ksh. Therefore the correct file to put settings into is not ".sh_profile" but ".kshrc" in the users $HOME.

If you want to be 101% sure put a ". ~/.kshrc" as the last line into the file "~/.profile".

For details about users sessions you might want to examine the wtmp and the utmp files, both in the "/var" tree. Consult your man pages about both for details and also the tools (last, etc.) to examine them.

I hope this helps.

bakunin