ORA-01292: Can't access log file with log miner while using online catalog

Question

I'm currently trying to add logminer to my Oracle database. The goal is to use le online catalog but when i use :

EXECUTE DBMS_LOGMNR.START_LOGMNR(OPTIONS => DBMS_LOGMNR.DICT_FROM_ONLINE_CATALOG);

to start the log miner i get this error :

ORA-01292: aucun fichier journal n'est indique pour la session LogMiner actuelle

ORA-01292: no log file for current LogMiner session.

Do you have any clue on this ?

Do i need to add a log file even if i use the online catalog ?

Thanks,