To know free space in database files

Question

Hi all,
how to know free space and used space in individual database files by sql quer or command not from oracle enterprise manager.please can any body tell me query.quick response will higly appreciated.thanks a lot in advance.

Answer 1

Hi;
column file_name format a42
column tablespace_name format a15
column status format a3 trunc
column t format 999,999.000 heading "Total MB"
column a format a4 heading "Aext"
column p format 990.00 heading "% Free"
SELECT df.file_name,
df.tablespace_name,
df. status,
(df.bytes/1024000) t,
(fs.s/df.bytes*100) p,
decode (ae.y,1,'YES','NO') a
FROM dba_data_files df,
(SELECT file_id,SUM(bytes) s
FROM dba_free_space
GROUP BY file_id) fs,
(SELECT file#, 1 y
FROM sys.filext$
GROUP BY file#) ae
WHERE df.file_id = fs.file_id
AND ae.file#(+) = df.file_id
ORDER BY df.tablespace_name, df.file_id;
column file_name clear
column tablespace_name clear
column status clear
column t clear
column a clear
column p clear
ttitle off
Sample Output:
FILE_NAME TABLESPACE_NAME STA Total MB % Free Aext
/usr/ORACLE/u02/data/example01.dbf EXAMPLE AVA 153.600 49.13 YES
Edited by: emre baransel on Sep 30, 2009 10:11 AM