Hi, I have domain www.domain.com and sub domain for ex.. domain1.domain.com and domain2.domain.com. When i come to www.domain.com, tomcat creates JSESSIONID in to .domain.com. when i click any link on that page which is going domain1.domain.com/.. then tomcat creates another JSESSIONID under domain1.domain.com. I would like to have just one JSESSIONID. How can i do it in jboss 4.0.4? is there any specific configuration for that? I want to store passed parameter into session and then finally to database but since another session is created, it overwrite my stored value in session.