Hi, since I didn't get any replies, decided 2 do some R&D and find out the solution. Here is how it works out :-
The problem was with the CATALINA_OPTS properties. Seems like OpenAM needs at least 1G heap size.
If you dont have access to tomcat6w gui, create a setenv.bat file in /bin for the server and enter :-
set CATALINA_OPTS=-Xms512m -Xmx1024m
That should suffice. Also set the same for JAVA_HOME through control panel properties.
Regards.