sql command to check the tablespace used

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 ASC;