get tablespace output - oracle

Question

Our oracle Oracle Enterprise manager database version is 12.1.0.2. I am trying to get all the tablespace total size,used_size, free_size in my below query. The query give me an error . With this query I wanna show below
1) target name, tablespacename, total_space,free_space, used_space in GB.
2) I want column alias name without comma
Wrote file afiedt.buf
1 select * from
2 ( select target_name,KEY_VALUE NAME
3 ,decode(column_label,'Tablespace Allocated Space (MB)' ,total_space
4 ,'Tablespace Free Space (MB)',free_space,'Tablespace Us
ed Space (MB)',used_space,column_label) as column_label
5 ,value
6 from sysman.mgmt$metric_current
7 where COLUMN_LABEL IN('Tablespace Allocated Space (MB)','Tablespace Used
Space (MB)','Tablespace Free Space (MB)')
8 and target_type = 'rac_database'
9 )
10 PIVOT(
11 MAX(VALUE)
12* FOR COLUMN_LABEL IN( 'total_space ','used_space','free_space'))
SQL> /
,'Tablespace Free Space (MB)',free_space,'Tablespace Used Sp
ace (MB)',used_space,column_label) as column_label
*
ERROR at line 4:
ORA-00904: "USED_SPACE": invalid identifier
SQL>

Answer 1

I think you want:
select * from
( select target_name,KEY_VALUE NAME
,decode(column_label,'Tablespace Allocated Space (MB)' ,'total_space'
,'Tablespace Free Space (MB)','free_space'
,'Tablespace Used Space (MB)','used_space'
,column_label) as column_label
,value
from sysman.mgmt$metric_current
where COLUMN_LABEL IN('Tablespace Allocated Space (MB)','Tablespace Used Space (MB)','Tablespace Free Space (MB)')
and target_type = 'rac_database'
)
PIVOT(
MAX(VALUE)
FOR COLUMN_LABEL IN( 'total_space','used_space','free_space'))
Although on my database (11g), I don't see the label "Tablespace Free Space (MB)"
Note, if you want free space for tablespaces, you could use dba_free_space:
select tablespace_name, sum(bytes)/1024/1024 as mb_free
from dba_free_space
group by tablespace_name;

Answer 2

I think you can simplify even further than #tbone's answer:
select *
from (
select column_label, key_value as tablespace_name, value
from sysman.mgmt$metric_current
where column_label in ('Tablespace Allocated Space (MB)',
'Tablespace Used Space (MB)', 'Tablespace Free Space (MB)')
and target_type = 'rac_database'
)
pivot (
max(value)
for column_label in ('Tablespace Allocated Space (MB)' as total_space,
'Tablespace Used Space (MB)' as used_space, 'Tablespace Free Space (MB)' as free_space)
)
/
Which (in 11gR2) gets output like:
TABLESPACE_NAME TOTAL_SPACE USED_SPACE FREE_SPACE
------------------------------ -------------------- -------------------- --------------------
SYSAUX 1770 1630.25
SYSTEM 730 727.125
TEMP 2009 0
UNDOTBS1 3469 20.5
USERS 832.25 54.0625
...
In this release the mgmt$metric_current table doesn't have an entry for free space; I can't currently check if that's been added in 12c, but you can calculate it from the other two of course.
if you want the values in GB instead of MD just divide by 1024 in the subquery, perhaps rounding to a sensible number of digits:
select *
from (
select column_label, key_value as tablespace_name,
round(to_number(value)/1024, 2) as value
from sysman.mgmt$metric_current
where column_label in ('Tablespace Allocated Space (MB)',
'Tablespace Used Space (MB)', 'Tablespace Free Space (MB)')
and target_type = 'rac_database'
)
pivot (
max(value)
for column_label in ('Tablespace Allocated Space (MB)' as total_space,
'Tablespace Used Space (MB)' as used_space,
'Tablespace Free Space (MB)' as free_space)
)
/
TABLESPACE_NAME TOTAL_SPACE USED_SPACE FREE_SPACE
------------------------------ -------------------- -------------------- --------------------
UNDOTBS1 3.39 .02
TEMP 1.96 0
SYSAUX 1.73 1.59
USERS .81 .05
SYSTEM .71 .71
...
As #tbone also suggested, there are other views that would give you this information, but on my DB at least this is significantly slower:
select dfs.tablespace_name,
(select round(sum(ddf.bytes)/power(1024, 3), 2) from dba_data_files ddf
where ddf.tablespace_name = dfs.tablespace_name) as total_space,
(select round(sum(ds.bytes)/power(1024, 3), 2) from dba_segments ds
where ds.tablespace_name = dfs.tablespace_name) as used_space,
round(sum(dfs.bytes)/power(1024, 3), 2) as free_space
from dba_free_space dfs
group by dfs.tablespace_name
/
TABLESPACE_NAME TOTAL_SPACE USED_SPACE FREE_SPACE
------------------------------ -------------------- -------------------- --------------------
SYSAUX 1.73 1.59 .13
UNDOTBS1 3.39 .08 3.31
USERS .81 .05 .76
SYSTEM .71 .71 0
...
... and from a comment about sysman owning the table you're looking at, perhaps you can't see the DBA views when you're connected to EM.
You can put the pivot result into an inline view or CTE if you want to do further calculations on the results, like getting the percentage of space used:
with cte as (
select *
from (
select column_label, key_value as tablespace_name,
to_number(value)/1024 as value
from sysman.mgmt$metric_current
where column_label in ('Tablespace Allocated Space (MB)',
'Tablespace Used Space (MB)', 'Tablespace Free Space (MB)')
and target_type = 'rac_database'
)
pivot (
max(value)
for column_label in ('Tablespace Allocated Space (MB)' as total_space,
'Tablespace Used Space (MB)' as used_space,
'Tablespace Free Space (MB)' as free_space)
)
)
select tablespace_name, round(total_space, 2) as total_space,
round(used_space, 2) as used_space, round(free_space, 2) as free_space,
round(100 * used_space / total_space, 2) as pct_used
from cte;
In 11g this also lets you calculate the free space easily, from the total and used space:
with cte as (
select *
from (
select column_label, key_value as tablespace_name,
to_number(value)/1024 as value
from sysman.mgmt$metric_current
where column_label in ('Tablespace Allocated Space (MB)',
'Tablespace Used Space (MB)')
and target_type = 'rac_database'
)
pivot (
max(value)
for column_label in ('Tablespace Allocated Space (MB)' as total_space,
'Tablespace Used Space (MB)' as used_space)
)
)
select tablespace_name, round(total_space, 2) as total_space,
round(used_space, 2) as used_space,
round(total_space - used_space, 2) as free_space,
round(100 * used_space / total_space, 2) as pct_used
from cte;
TABLESPACE_NAME TOTAL_SPACE USED_SPACE FREE_SPACE PCT_USED
------------------------------ -------------------- -------------------- -------------------- ----------
UNDOTBS1 3.39 .02 3.37 .59
TEMP 1.96 0 1.96 0
SYSAUX 1.73 1.59 .14 92.1
USERS .81 .05 .76 6.5
SYSTEM .71 .71 0 99.61
...