system tablespace error!

Hi,
Can someone please help me resolve this error message:

ORA-00604: error occurred at recursive SQL level 1
ORA-01653: unable to extend table SYS.IDL_UB2$ by 50 in tablespace SYSTEM



I have .39m of space available on the system tablespace. Can you also let me know how I can increase the space.


Thanks,
Leonard

The system ts was unable to extend. Either turn Autoextend On OR resize the dbf.
-
alter database datafile 'full_pathname_of_dbf' resize XXXM;

Thanks. I just resized the datafile.