I have quartz schedule that randomly deleted from our database. The schedule is expected to run twice a day but one day it did not run and the trigger was deleted in the database.
I've tried researching on what could cause this. One possible cause was the trigger didn't have NEXTFIRE_TIME so quartz deleted the trigger but all our triggers does not have END_TIME set in the database.
What could cause the deletion of the triggers in the database? We are using quartz-2.2.1.jar.