> I have read the documentation that does not run again if a class is already active in the scheduler, am I right?
Not quite. If you specify 2 tasks for the same bean method at the same time, they will run simultaneously. The scheduling mechanism ensures not running the same task twice, regardless of what this task invokes.
Consider also creating a separate entity which would store some settings for what task should do what. Then your bean could use this additional information when invoked from the scheduled task.
Hope this helps.