Pour ceux qui se posent la question :

select type, records_used, records_total
         from v$controlfile_record_section;

TYPE                         RECORDS_USED RECORDS_TOTAL
---------------------------- ------------ -------------
DATABASE                                1             1
CKPT PROGRESS                           0            11
REDO THREAD                             1             8
REDO LOG                                3            16
DATAFILE                                5           100
FILENAME                                9          2298
TABLESPACE                              6           100
TEMPORARY FILENAME                      1           100
RMAN CONFIGURATION                      0            50
LOG HISTORY                            41           292
OFFLINE RANGE                           0           163
ARCHIVED LOG                           25            28
BACKUP SET                              0           409
BACKUP PIECE                            0           200
BACKUP DATAFILE                         0           245
BACKUP REDOLOG                          0           215
DATAFILE COPY                           1           200
BACKUP CORRUPTION                       0           371
COPY CORRUPTION                         0           409
DELETED OBJECT                          1           818
PROXY COPY                              0           246
BACKUP SPFILE                           0           131
DATABASE INCARNATION                    2           292
FLASHBACK LOG                           0          2048
RECOVERY DESTINATION                    1             1
INSTANCE SPACE RESERVATION              1          1055
REMOVABLE RECOVERY FILES                0          1000
RMAN STATUS                             0           141
THREAD INSTANCE NAME MAPPING            8             8
MTTR                                    1             8
DATAFILE HISTORY                        0            57
STANDBY DATABASE MATRIX                10            10
GUARANTEED RESTORE POINT                0          2048
RESTORE POINT                           0          2083
DATABASE BLOCK CORRUPTION               0          8384
ACM OPERATION                           4            64
FOREIGN ARCHIVED LOG                    0          1002