how do see how much space is used and free in a tablespace

Answers were Sorted based on User's Feedback



how do see how much space is used and free in a tablespace..

Answer / mohapatra.gouranga@gmail.com

Best ans is:
SELECT 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 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 DESC;

Is This Answer Correct ?    0 Yes 0 No

how do see how much space is used and free in a tablespace..

Answer / anil kumar prajapati

olumn "Tablespace" format a13
column "Used MB" format 99,999,999
column "Free MB" format 99,999,999
column "Total MB" format 99,999,999
select
fs.tablespace_name "Tablespace",
(df.totalspace - fs.freespace) "Used MB",
fs.freespace "Free MB",
df.totalspace "Total MB",
round(100 * (fs.freespace / df.totalspace)) "Pct. Free"
from
(select
tablespace_name,
round(sum(bytes) / 1048576) TotalSpace
from
dba_data_files
group by
tablespace_name
) df,
(select
tablespace_name,
round(sum(bytes) / 1048576) FreeSpace
from
dba_free_space
group by
tablespace_name
) fs
where
df.tablespace_name = fs.tablespace_name;

Is This Answer Correct ?    0 Yes 0 No

Post New Answer

More DB Administration Interview Questions

What does coalescing a tablespace do?

1 Answers  


What is the default fill factor value? : sql server DBA

0 Answers  


Draft one mock email requesting your non-technical management grant you downtime to (provide justification where applicable) complete the following tasks: (1) Generate statistics on a large table; (2) Generate an RDA – if you don't know what an RDA is please say so. (3) Rename datafiles.

0 Answers  


Give the stages of instance startup to a usable state where normal users may access it.

1 Answers  


What are the new features in sql server 2005 when compared to sql server 2000? : sql server DBA

0 Answers  






when does an alert gets signaled?

0 Answers   Oracle,


What are the recovery models for a database? : sql server DBA

0 Answers  


Explain the difference between a hot backup and a cold backup and the benefits associated with each?

7 Answers   TCS,


How can you rebuild an index?

6 Answers  


What are the commands used in dcl? : sql server DBA

0 Answers  


what is grd?

0 Answers   Oracle,


any body know about orawaves do they really provide placements in their unique placement program

1 Answers   TCS,


Categories