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Hi,
In 19c

The following displays 5 columns. is there any way to have just tablespace and Pct.Free columns?
select df.tablespace_name "Tablespace",
totalusedspace "Used MB",
(df.totalspace - tu.totalusedspace) "Free MB",
df.totalspace "Total MB",
round(100 * ( (df.totalspace - tu.totalusedspace)/ df.totalspace))
"Pct. Free"
from
(select tablespace_name,
round(sum(bytes) / 1048576) TotalSpace
from dba_data_files
group by tablespace_name) df,
(select round(sum(bytes)/(1024*1024)) totalusedspace, tablespace_name
from dba_segments
group by tablespace_name) tu
where df.tablespace_name = tu.tablespace_name and round(100 * ( (df.totalspace - tu.totalusedspace)/ df.totalspace)) < 40 ;



Thank you.

[ErmanArslansOracleBlog]

yes. just select those colums.. change your sql a little bit. or select from your select :)