If you are doing maintenance on a system and you don't want any of the currently scheduled batch jobs to run, use
program BTCTRNS1. This will take all currently Scheduled and Released jobs and move them into a "special" status. When you are ready to restore them to their previous status simply run BTCTRNS2. These programs are used by SAP during an upgrade, but works wonderfully for such things as the implementation of support packs and other maintenance activities.