how to kill user session which is consuming more memory?

Hi all

we are using oracle weblogic server 10.3.6 and oracle forms 11 g R2.

In production are since two days we are observing that some user sessions are taking more 9GB memory from the server.This we are able to monitor from the em (enterprise manager).

My query is can we kill a user session if he is cosuming more memory something like more than 1GB (is there any script we can write so ? to terminate or kill the user session from weblogic perspective or forms perspective..?)

need your help urgently.....

Regards

Kartheek.