SQL> create tablespace RBS
2 DATAFILE '/u02/oradata/O8I5A/rbs01.dbf' SIZE 482344960
3 EXTENT MANAGEMENT DICTIONARY
4 DEFAULT STORAGE (
5 INITIAL 131072
6 NEXT 131072
7 MINEXTENTS 20
8 MAXEXTENTS 4096
9 PCTINCREASE 0);
create tablespace RBS
*
ERROR at line 1:
ORA-12913: Cannot create dictionary managed tablespace

what is wrong???