Oracle PL/SQL Tutorial/System Tables Data Dictionary/dba data files

show filestat

SQL> select tablespace_name, file_name, PHYRDS, PHYWRTS, PHYBLKRD, PHYBLKWRT
  2  from v$filestat, dba_data_files
  3  where file_id = file#
  4  order by PHYRDS, PHYWRTS desc
  5  /
TABLESPACE_NAME      FILE_NAME                                                  PHYRDS  PHYWRTS     PHYBLKRD PHYBLKWRT
-------------------- ---------------------------------------------------- ------------ -------- ------------ ---------
DATA_1               C:\ORACLEXE\APP\ORACLE\PRODUCT\10.2.0\SERVER\DATABAS           14        8        14            8
                     E\DATA_1B.DBF
DATA_1               C:\ORACLEXE\APP\ORACLE\PRODUCT\10.2.0\SERVER\DATABAS           15        8        15            8
                     E\DATA_1A.DBF
USERS                C:\ORACLEXE\ORADATA\XE\USERS.DBF                               24       30        24           57
UNDO                 C:\ORACLEXE\ORADATA\XE\UNDO.DBF                             1,252    8,112        1,252    18,054
SYSAUX               C:\ORACLEXE\ORADATA\XE\SYSAUX.DBF                           2,093    1,450        3,476     1,624
SYSTEM               C:\ORACLEXE\ORADATA\XE\SYSTEM.DBF                          21,550   11,387       58,012    20,835
6 rows selected.
SQL> spool off