for my web application I use Weblogic 10.3.5, Jpa 2.0 and Spring 3.1.
When I execute a search feature a strange thing happens: controller calls back-end side and java routine start (jpa db connection for get results and then java operation). Every one minute (I see this in front end and back end log file) the same functionality restart until Weblogin session (720 seconds) expires (operation during in total about 1 minute ad 30 seconds) . It seems as if there is a timeout of one minute. I have analyzed the status of the request with firebug and it seems that only one request start...but in the log file I see several started of the same functionality.