V$DATAFILE_HEADER

Columns
   ___________________________
 
   BYTES
   FUZZY
   CREATION_TIME
   TS#
   RFILE#
   RESETLOGS_CHANGE#
   RESETLOGS_TIME
   CHECKPOINT_CHANGE#
   NAME
   CHECKPOINT_COUNT
   BLOCKS
   CREATION_CHANGE#
   RECOVER
   CHECKPOINT_TIME
   ERROR
   STATUS
   TABLESPACE_NAME
   FILE#
   FORMAT

Related Views:

V$ACTIVE_INSTANCES 
V$BGPROCESS 
V$BH 
V$COMPATIBILITY 
V$COMPATSEG 
V$COPY_CORRUPTION 
V$DATABASE 
V$DATAFILE 
V$DATAFILE_COPY 
V$DBFILE 
V$DBLINK 
V$DB_PIPES 
V$INSTANCE 
V$LICENSE 
V$OFFLINE_RANGE 
V$OPTION 
V$SGA 
V$SGASTAT 
V$TABLESPACE 
V$VERSION