SELECT DISTINCT a.tablespace_name,

sum(a.bytes)/1024/1024 CurMb,

sum(decode(b.maxextend, null, a.bytes/1024/1024, b.maxextend*(SELECT value FROM v$parameter WHERE name='db_block_size')/1024/1024)) MaxMb,

round(100*(sum(a.bytes)/1024/1024 - round(c.free/1024/1024))/(sum(decode(b.maxextend, null, a.bytes/1024/1024, b.maxextend*(SELECT value FROM v$parameter WHERE name='db_block_size')/1024/1024)))) UPercent,

(sum(a.bytes)/1024/1024 - round(c.free/1024/1024)) TotalUsed,

(sum(decode(b.maxextend, null, a.bytes/1024/1024, b.maxextend*(SELECT value FROM v$parameter WHERE name='db_block_size')/1024/1024)) - (sum(a.bytes)/1024/1024 - round(c.Free/1024/1024))) TotalFree

FROM dba_data_files a,

sys.filext$ b,

(SELECT d.tablespace_name , sum(nvl(c.bytes,0)) free

FROM dba_tablespaces d,dba_free_space c

WHERE d.tablespace_name = c.tablespace_name(+)

GROUP BY d.tablespace_name) c

WHERE a.file_id = b.file#(+)

AND a.tablespace_name = c.tablespace_name

GROUP BY a.tablespace_name,

c.free/1024

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