Oracle Tablespace Size in GB

SQL Code:

set colsep |

set linesize 100 pages 100 trimspool on numwidth 14 

col name format a25

col owner format a15 

col "Used (GB)" format a15

col "Free (GB)" format a15 

col "(Used) %" format a15 

col "Size (M)" format a15 

SELECT d.status "Status", d.tablespace_name "Name", 

 TO_CHAR(NVL(a.bytes / 1024 / 1024 /1024, 0),'99,999,990.90') "Size (GB)", 

 TO_CHAR(NVL(a.bytes - NVL(f.bytes, 0), 0)/1024/1024 /1024,'99999999.99') "Used (GB)", 

 TO_CHAR(NVL(f.bytes / 1024 / 1024 /1024, 0),'99,999,990.90') "Free (GB)", 

 TO_CHAR(NVL((a.bytes - NVL(f.bytes, 0)) / a.bytes * 100, 0), '990.00') "(Used) %"

 FROM sys.dba_tablespaces d, 

 (select tablespace_name, sum(bytes) bytes from dba_data_files group by tablespace_name) a, 

 (select tablespace_name, sum(bytes) bytes from dba_free_space group by tablespace_name) f WHERE 

 d.tablespace_name = a.tablespace_name(+) AND d.tablespace_name = f.tablespace_name(+) AND NOT 

 (d.extent_management like 'LOCAL' AND d.contents like 'TEMPORARY') 

UNION ALL 

SELECT d.status 

 "Status", d.tablespace_name "Name", 

 TO_CHAR(NVL(a.bytes / 1024 / 1024 /1024, 0),'99,999,990.90') "Size (GB)", 

 TO_CHAR(NVL(t.bytes,0)/1024/1024 /1024,'99999999.99') "Used (GB)",

 TO_CHAR(NVL((a.bytes -NVL(t.bytes, 0)) / 1024 / 1024 /1024, 0),'99,999,990.90') "Free (GB)", 

 TO_CHAR(NVL(t.bytes / a.bytes * 100, 0), '990.00') "(Used) %" 

 FROM sys.dba_tablespaces d, 

 (select tablespace_name, sum(bytes) bytes from dba_temp_files group by tablespace_name) a, 

 (select tablespace_name, sum(bytes_cached) bytes from v$temp_extent_pool group by tablespace_name) t 

 WHERE d.tablespace_name = a.tablespace_name(+) AND d.tablespace_name = t.tablespace_name(+) AND 

 d.extent_management like 'LOCAL' AND d.contents like 'TEMPORARY';