Tag Archives: free space

How to check the used & free space in the tablespace

SELECT /* + RULE */ df.tablespace_name “Tablespace”,
df.bytes / (1024 * 1024)”Size (MB)”,
SUM(fs.bytes) / (1024 * 1024) “Free (MB)”,
Nvl(Round(SUM(fs.bytes) * 100 / df.bytes),1) “% Free”,
Round((df.bytes – SUM(fs.bytes)) * 100 / df.bytes) “% Used”
FROM dba_free_space fs,
(SELECT tablespace_name,SUM(bytes) bytes
FROM dba_data_files
GROUP BY tablespace_name) df
WHERE fs.tablespace_name (+) = df.tablespace_name
GROUP BY df.tablespace_name,df.bytes
UNION ALL
SELECT /* + RULE */ df.tablespace_name tspace,
fs.bytes / (1024 * 1024),
SUM(df.bytes_free) / (1024 * 1024),
Nvl(Round((SUM(fs.bytes) – df.bytes_used) * 100 / fs.bytes), 1),
Round((SUM(fs.bytes) – df.bytes_free) * 100 / fs.bytes)
FROM dba_temp_files fs,
(SELECT tablespace_name,bytes_free,bytes_used
FROM v$temp_space_header
GROUP BY tablespace_name,bytes_free,bytes_used) df
WHERE fs.tablespace_name (+) = df.tablespace_name
GROUP BY df.tablespace_name,fs.bytes,df.bytes_free,df.bytes_used
ORDER BY 4 DESC;

SELECT /* + RULE */ df.file_name ,df.tablespace_name “Tablespace”,
df.bytes / (1024 * 1024)”Size (MB)”,
SUM(fs.bytes) / (1024 * 1024) “Free (MB)”,
Nvl(Round(SUM(fs.bytes) * 100 / df.bytes),1) “% Free”,
Round((df.bytes – SUM(fs.bytes)) * 100 / df.bytes) “% Used”
FROM dba_free_space fs,
(SELECT file_name,tablespace_name,SUM(bytes) bytes
FROM dba_data_files
GROUP BY file_name,tablespace_name) df
WHERE fs.tablespace_name (+) = df.tablespace_name
GROUP BY df.tablespace_name,df.bytes,df.file_name
UNION ALL
SELECT /* + RULE */ fs.file_name,df.tablespace_name tspace,
fs.bytes / (1024 * 1024),
SUM(df.bytes_free) / (1024 * 1024),
Nvl(Round((SUM(fs.bytes) – df.bytes_used) * 100 / fs.bytes), 1),
Round((SUM(fs.bytes) – df.bytes_free) * 100 / fs.bytes)
FROM dba_temp_files fs,
(SELECT tablespace_name,bytes_free,bytes_used
FROM v$temp_space_header
GROUP BY tablespace_name,bytes_free,bytes_used) df
WHERE fs.tablespace_name (+) = df.tablespace_name
GROUP BY df.tablespace_name,fs.bytes,df.bytes_free,df.bytes_used,fs.file_name
ORDER BY 1 DESC;