AW: AW: setting-up scarab 0.21 for oracle 10g

>> org.quartz.ObjectAlreadyExistsException: Unable to store Trigger with
>> name: 'NMTrigger' and group: 'Scarab', because one already exists with
>> this identification.
>> 	at org.quartz.simpl.RAMJobStore.storeTrigger(RAMJobStore.java:309)

>Searching around this appears to be a problem with Quartz and Oracle.
>People have reported it to be a random startup error.
Have you tried restarting tomcat a number of times?

Yes, I have. I think I have to understand what Quartz meaning or a Trigger is.
I have looked on the opensymphony-quartz pages and unterstand that it is a
scheduler-system.
But which features of quartz are really used by scarab ? 

I´m now sticking with a deadline in another project so I have to put this
question aside for a couple of days. Then I will first have a look into the
scarab-source.

Regards,
Norbert