i think, there were something wrong datas in the local db.
i made this, to solve the problem:
(my server is "playground" ... your could be "default" or sth. else)
i opened this folder:
i deleted all files in there.
"localDB.properties", "localDB.lck", "localDB.data", "localDB.log"
then start jboss again and the error is gone ^^