Before a Federation Manager web archive (WAR) is generated, the files in the WAR are placed in a staging directory. The staging directory should be kept in a permanent directory as it will be used whenever Federation Manager is redeployed or, the SAML v2 Plug-in for Federation Services is installed and its operational commands used. The recommended path is /var/opt/SUNWam/fm/war_staging. The staging directory can not be moved after it is created without reinstalling the product. From the staging directory, the web container deploys an instance of the web application. Thus, any modifications to the Federation Manager web application must first be made to the staging directory which is then re-archived and the resulting WAR, redeployed.
Do not put the staging directory in a volatile place such as /tmp.
See Detailing the fmwar Syntax for more information on creating a Federation Manager WAR and staging directory for the first time.