Currently in version 6.1 a timeout value can be added to the server.xml file which is located in the installation directory under web\wlp\usr\servers\defaultServer. The IBM documentation says to add a parameter invalidationTimeout= and put the value in seconds. This is fine, if server.xml is not backed up prior to installing an iFix, it will get overwritten. If possible please move the server.xml to the database if possible. Thanks.