You can only do clearTimers() from persistencePolicy=database,service=EJBTimerService.
Or connect to the timer database directly and remove the rows you don't want (this is a hack).
Thanks for the reply Dimitri,
I'am already removing timers from the persistencePlicy MBean, but I then need to stop & start Jboss. Is it possible to just stop or kill a running timer from a running JBoss without having to restart it?
Thanks for your help,