tablespaces in dba_tablespace_usage_metrics not visible? select * from dba_tablespace_usage_metric

i have some table spaces created and existing

SYS[dbxxx]> select * from v$tablespace;

       TS# NAME                           INC BIG FLA ENC

---------- ------------------------------ --- --- --- ---

         0 SYSTEM                         YES NO  YES

         1 SYSAUX                         YES NO  YES

         2 UNDOTBS1                       YES NO  YES

         4 USERS                          YES NO  YES

         3 TEMP                           NO  NO  YES

         5 UNDOTBS2                       YES NO  YES

         6 STANDARD                       YES NO  YES

         7 TSEXT10M                       YES NO  YES

         8 TSEXT01M                       YES NO  YES

         9 JATO                           YES NO  YES

        10 TSMVLOG                        YES NO  YES

        11 SXBI                           YES NO  YES

        12 MPC                            YES NO  YES

13 Zeilen ausgew▒hlt.

but these table spaces are not visisble in dba_tablespace_usage_metrics. why ?

SYS[dbxxx]>select tablespace_id, rfno from v$filespace_usage;