[xwiki-users] timeout in job scheduler?

Hello, I created a job scheduled in scheduler, but sometime my job seem to be failed sometime. In my groovy job I add some logging system: some text sent to a xwiki page+save but didn't find interesting things. Of course I have some loops (I things) in my script (to list groups member): Members = xwiki.rightsmanager.getAllMembersNamesForGroup("${GroupName}") //extrait les users du groupe Members.each { MyMember = xwiki.getDocument(it) I wonder, Is there a timeout associated to the script that runs and is there feedback in the event of an error (or a way to activate logs for job scheduled)? Thxs Pascal BASTIEN