JOTM, JOTM-BTP and webservice

Question

When my request is submitted from JSP page at that time, server side i do some transaction but didn't commit yet.

   Now i am calling a web service and pass some data.

   In that web service i do some database operation but didn't commit and return some  data.

   Now i want to commit this both transaction in one single commit line.

   In short i want to manage my TX at client side only.

Is It possible ????

If your answer is yes please send me any example or guide line or web site reference !!!!

If your answer is no please tell me how can i achieve it !!!

I am using MySql 5.X database , tomcat 6.X , JOTM and JOTM-BTP.