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How full is my datafile?


How full is my datafile?

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kevaburg
kevaburg
Mr or Mrs. 500
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Group: General Forum Members
Points: 579 Visits: 922
Hi folks!

When I create my database I define sizes for the datafiles that make it up, by default the MDF and LDF datafiles. I might specify 250MB for the MDF and 50MB for the LDF. These sizes are the sizes that are displayed when I look in Windows Explorer, run sp_helpdb and so on.

The problem is this: How do I find out how much of that datafile is actually filled with data and how much is empty and reserved for use using SQL-based queries?

Many thanks for your help!

Regards,

Kev
durai nagarajan
durai nagarajan
Ten Centuries
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Group: General Forum Members
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This is the one i use.



use master

CREATE TABLE #TMPFIXEDDRIVES (
DRIVE CHAR(1),
MBFREE INT)

INSERT INTO #TMPFIXEDDRIVES
EXEC xp_FIXEDDRIVES

CREATE TABLE #TMPSPACEUSED (
DBNAME VARCHAR(50),
FILENME VARCHAR(50),
SPACEUSED FLOAT)

INSERT INTO #TMPSPACEUSED
EXEC( 'sp_msforeachdb''use ?; Select ''''?'''' DBName, Name FileNme, fileproperty(Name,''''SpaceUsed'''') SpaceUsed from sysfiles''')

SELECT C.DRIVE,
CASE
WHEN (C.MBFREE) > 1000 THEN CAST(CAST(((C.MBFREE) / 1024.0) AS DECIMAL(18,2)) AS VARCHAR(20)) + ' GB'
ELSE CAST(CAST((C.MBFREE) AS DECIMAL(18,2)) AS VARCHAR(20)) + ' MB'
END AS DISKSPACEFREE,
A.NAME AS DATABASENAME,
B.NAME AS FILENAME,
CASE B.TYPE
WHEN 0 THEN 'DATA'
ELSE TYPE_DESC
END AS FILETYPE,
CASE
WHEN (B.SIZE * 8 / 1024.0) > 1000 THEN CAST(CAST(((B.SIZE * 8 / 1024) / 1024.0) AS DECIMAL(18,2)) AS VARCHAR(20)) + ' GB'
ELSE CAST(CAST((B.SIZE * 8 / 1024.0) AS DECIMAL(18,2)) AS VARCHAR(20)) + ' MB'
END AS FILESIZE,
CAST((B.SIZE * 8 / 1024.0) - (D.SPACEUSED / 128.0) AS DECIMAL(15,2)) SPACEFREE,
B.PHYSICAL_NAME
FROM SYS.DATABASES A
JOIN SYS.MASTER_FILES B
ON A.DATABASE_ID = B.DATABASE_ID
JOIN #TMPFIXEDDRIVES C
ON LEFT(B.PHYSICAL_NAME,1) = C.DRIVE
JOIN #TMPSPACEUSED D
ON A.NAME = D.DBNAME
AND B.NAME = D.FILENME
ORDER BY DATABASENAME asc

DROP TABLE #TMPFIXEDDRIVES

DROP TABLE #TMPSPACEUSED



Regards
Durai Nagarajan
Perry Whittle
Perry Whittle
SSCrazy Eights
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Points: 8784 Visits: 16558
kevaburg (10/12/2012)
How do I find out how much of that datafile is actually filled with data and how much is empty and reserved for use using SQL-based queries

Run this per database


select df.name AS LogicalFileName
, isnull(fg.name, 'Log') AS FilegroupName
, df.physical_name AS PhysicalOSName
, (df.size * 8 / 1024) AS SizeMBs
, (fileproperty(df.name, 'SpaceUsed') / 128) AS SpaceUsedMBs
, (df.size * 8 / 1024) - (fileproperty(df.name, 'SpaceUsed') / 128) AS FreeMBs
, case df.max_size
when 0 then 'No Growth'
when -1 then 'Unlimited'
when 268435456 then '2TB'
else cast(df.max_size / 128 AS VARCHAR(10)) + ' MBs'
end AS MaxFileSize
, case df.is_percent_growth
when 0 then cast(df.growth / 128 AS VARCHAR(10)) + ' MBs'
else CAST(df.growth AS VARCHAR(10)) + ' %'
end AS Growth
,cast(cast((fileproperty(df.name, 'SpaceUsed') / 128) as numeric(20,2)) /
cast(df.size / 128 as numeric(20,2))
* 100 as numeric(20,2)) as PercentUsed

from sys.database_files df left outer join sys.filegroups fg ON df.data_space_id = fg.data_space_id
order by df.type



-----------------------------------------------------------------------------------------------------------

"Ya can't make an omelette without breaking just a few eggs" ;-)
kevaburg
kevaburg
Mr or Mrs. 500
Mr or Mrs. 500 (579 reputation)Mr or Mrs. 500 (579 reputation)Mr or Mrs. 500 (579 reputation)Mr or Mrs. 500 (579 reputation)Mr or Mrs. 500 (579 reputation)Mr or Mrs. 500 (579 reputation)Mr or Mrs. 500 (579 reputation)Mr or Mrs. 500 (579 reputation)

Group: General Forum Members
Points: 579 Visits: 922
Hi there!

Thank you very much! That was exactly what I was looking for!

Kind regards,

Kevw00t
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