Help with reworking this query

Question

Hi Gurus.
I use the following script on an ad-hoc basis to check free space in tablespaces and it works fine.
However I would like to trim this script so that it outputs to a small file which can then be emailed. I would like the file to only contain the % free column of the original output.
I have tried but failed miserably in an effort to change this query. Can anyone assist?
set lines 200 pages 2000
col tablespace_name heading 'Tablespace' format a30 truncate
col total_maxspace_mb heading 'MB|Max Size' format 9G999G999
col total_allocspace_mb heading 'MB|Allocated' format 9G999G999
col used_space_mb heading 'MB|Used' format 9G999G999D99
col free_space_mb heading 'MB|Free Till Max' like used_space_mb
col free_space_ext_mb heading 'MB|Free Till Ext' like used_space_mb
col pct_used heading '%|Used' format 999D99
col pct_free heading '%|Free' like pct_used
break on report
compute sum label 'Total Size:' of total_maxspace_mb total_allocspace_mb used_space_mb - free_space_mb (used_space_mb/total_maxspace_mb)*100 on report
select /*+ALL_ROWS */
alloc.tablespace_name,
alloc.total_maxspace_mb,
alloc.total_allocspace_mb,
(alloc.total_allocspace_mb - free.free_space_mb) used_space_mb,
free.free_space_mb+(alloc.total_maxspace_mb-alloc.total_allocspace_mb) free_space_mb,
free.free_space_mb free_space_ext_mb,
((alloc.total_allocspace_mb - free.free_space_mb)/alloc.total_maxspace_mb)*100 pct_used,
((free.free_space_mb+(alloc.total_maxspace_mb-alloc.total_allocspace_mb))/alloc.total_maxspace_mb)*100 pct_free
FROM (SELECT tablespace_name,
ROUND(SUM(CASE WHEN maxbytes = 0 THEN bytes ELSE maxbytes END)/1048576) total_maxspace_mb,
ROUND(SUM(bytes)/1048576) total_allocspace_mb
FROM dba_data_files
WHERE file_id NOT IN (SELECT FILE# FROM v$recover_file)
GROUP BY tablespace_name) alloc,
(SELECT tablespace_name,
SUM(bytes)/1048576 free_space_mb
FROM dba_free_space
WHERE file_id NOT IN (SELECT FILE# FROM v$recover_file)
GROUP BY tablespace_name) free
WHERE alloc.tablespace_name = free.tablespace_name (+)
ORDER BY pct_used DESC
SELECT tablespace_name
FROM dba_data_files
WHERE file_id NOT IN (SELECT FILE# FROM v$recover_file)
GROUP BY tablespace_name alloc,
(SELECT tablespace_name,
SUM(bytes)/1048576 free_space_mb
FROM dba_free_space
WHERE file_id NOT IN (SELECT FILE# FROM v$recover_file)
GROUP BY tablespace_name) free
WHERE alloc.tablespace_name = free.tablespace_name (+)
ORDER BY pct_used DESC;
The output from this is:
MB MB MB MB MB % %
Tablespace Max Size Allocated Used Free Till Max Free Till Ext Used Free
APPS_TS_TX_IDX 18,197 17,730
APPS_TS_TX_DATA 25,600 24,832 24,746.38 853.63 85.63 96.67 3.33
APPS_TS_ARCHIVE 2,048 2,048 1,963.00 85.00 85.00 95.85 4.15
APPS_TS_MEDIA 10,240 8,693 8,662.88 1,577.13 30.13 84.60 15.40
I would like to ideally have only the % Free column (at the far right) returned.
Oracle 10.2.0.4
Linux RH 4.
Thanks in advance.
DA

Answer 1

I have a simple query for tablespace growth check. try this if it suits for you,
select t1.n1 "Tablespace Name",
t2.total "Total size",
(t2.total-t1.free) "Used Size" ,
t1.free "Free space",
trunc((t1.free/t2.total)*100) "%free " ,
trunc((1-t1.free/t2.total)*100) "% used"
from
(select tablespace_name n1,trunc(sum(bytes)/1024/1024) free
from dba_free_space where tablespace_name not in ('CWMLITE','DRSYS','ODM','XDB','EXAMPLE','TOOLS')
group by tablespace_name ) t1 ,
(select trunc(sum(bytes)/1024/1024) total,tablespace_name n2
from dba_Data_files where tablespace_name not in ('CWMLITE','DRSYS','ODM','XDB','EXAMPLE','TOOLS')
group by tablespace_name) t2
where t1.n1=t2.n2;