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The script /afs/slac.stanford.edu/package/java/build/release is a bourne shell script that assembles the names of the volumes it finds in the java directory that will be updated and then makes calls to the vos_release command which in turn calls vos commands to update a release. The same script is in the shadow directory but it refers to the visible path when building the package list.
The tomcat script (usually in the ~glast/tomcat/scripts directory) is where the "current" version of java is specified. Tony or Max updates this script.
Once you deploy the new version you must restart the servers so they can pick up the changes. The best way is to restart the test server and see if everything is ok there. If nothing breaks then restart the other servers. The Fermi experiment has an application called Server Monitoring which gives a list of all servers and a way to start or stop the server. Use the show details link to see what version of java is on the server.
For other experiments that do not have this application, you must log on to each server and restart it manually.
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