SQL Clone
SQLServerCentral is supported by Redgate
 
Log in  ::  Register  ::  Not logged in
 
 
 


Unable to shrink datafile


Unable to shrink datafile

Author
Message
RSingh-135921
RSingh-135921
Ten Centuries
Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)

Group: General Forum Members
Points: 1164 Visits: 184
Hi,

We have a 500 GB database.
We deleted 75% of old data and then rebuilt most of the indexes.

As a result of all this we had enough free space in the datafiles.
To reclaim most of the space I was trying to shrink the datafiles (15 in all).

Although most of them shrunk successfully, one of them has failed with this error:

Could not adjust the space allocation for file 'PCRDATA14'

This file is 26.6 GB in size. 7.8 GB is the used space and it had 18.8 GB free space. I was shrinking it with this command:

DBCC SHRINKFILE(PCRDATA14,15000)
GO

Any idea why the file is not shrinking? and how can I shrink it?

Regards
SQLQuest29
SQLQuest29
SSCertifiable
SSCertifiable (7.3K reputation)SSCertifiable (7.3K reputation)SSCertifiable (7.3K reputation)SSCertifiable (7.3K reputation)SSCertifiable (7.3K reputation)SSCertifiable (7.3K reputation)SSCertifiable (7.3K reputation)SSCertifiable (7.3K reputation)

Group: General Forum Members
Points: 7257 Visits: 4583
RSingh (1/31/2009)
Hi,

We have a 500 GB database.
We deleted 75% of old data and then rebuilt most of the indexes.

As a result of all this we had enough free space in the datafiles.
To reclaim most of the space I was trying to shrink the datafiles (15 in all).

Although most of them shrunk successfully, one of them has failed with this error:

Could not adjust the space allocation for file 'PCRDATA14'

This file is 26.6 GB in size. 7.8 GB is the used space and it had 18.8 GB free space. I was shrinking it with this command:

DBCC SHRINKFILE(PCRDATA14,15000)
GO

Any idea why the file is not shrinking? and how can I shrink it?

Regards


Hi,

what version of sql u r using ? And do post the error message u r getting.

do check the following link:
http://www.tech-archive.net/Archive/SQL-Server/microsoft.public.sqlserver.server/2004-03/3009.html

______________________________________________________________________________________________________________________________________________________________________________________
HTH !
Kin
MCTS : 2005, 2008
Active SQL Server Community Contributor :-)
Jason Crider
Jason Crider
SSCertifiable
SSCertifiable (5.4K reputation)SSCertifiable (5.4K reputation)SSCertifiable (5.4K reputation)SSCertifiable (5.4K reputation)SSCertifiable (5.4K reputation)SSCertifiable (5.4K reputation)SSCertifiable (5.4K reputation)SSCertifiable (5.4K reputation)

Group: General Forum Members
Points: 5373 Visits: 2232
See if this will help you at all. I've had good luck with it.


-- Shrink_DB_File.sql
/*
This script is used to shrink a database file in
increments until it reaches a target free space limit.

Run this script in the database with the file to be shrunk.
1. Set @DBFileName to the name of database file to shrink.
2. Set @TargetFreeMB to the desired file free space in MB after shrink.
3. Set @ShrinkIncrementMB to the increment to shrink file by in MB
4. Run the script
*/

declare @DBFileName sysname
declare @TargetFreeMB int
declare @ShrinkIncrementMB int

-- Set Name of Database file to shrink
set @DBFileName = 'nameOfDatabaseFileGoesHere'

-- Set Desired file free space in MB after shrink
set @TargetFreeMB = 1000

-- Set Increment to shrink file by in MB
set @ShrinkIncrementMB = 500

-- Show Size, Space Used, Unused Space, and Name of all database files
select
[FileSizeMB] =
convert(numeric(10,2),round(a.size/128.,2)),
[UsedSpaceMB] =
convert(numeric(10,2),round(fileproperty( a.name,'SpaceUsed')/128.,2)) ,
[UnusedSpaceMB] =
convert(numeric(10,2),round((a.size-fileproperty( a.name,'SpaceUsed'))/128.,2)) ,
[DBFileName] = a.name
from
sysfiles a

declare @sql varchar(8000)
declare @SizeMB int
declare @UsedMB int

-- Get current file size in MB
select @SizeMB = size/128. from sysfiles where name = @DBFileName

-- Get current space used in MB
select @UsedMB = fileproperty( @DBFileName,'SpaceUsed')/128.

select [StartFileSize] = @SizeMB, [StartUsedSpace] = @UsedMB, [DBFileName] = @DBFileName

-- Loop until file at desired size
while @SizeMB > @UsedMB+@TargetFreeMB+@ShrinkIncrementMB
begin

set @sql =
'dbcc shrinkfile ( '+@DBFileName+', '+
convert(varchar(20),@SizeMB-@ShrinkIncrementMB)+' ) '

print 'Start ' + @sql
print 'at '+convert(varchar(30),getdate(),121)

exec ( @sql )

print 'Done ' + @sql
print 'at '+convert(varchar(30),getdate(),121)

-- Get current file size in MB
select @SizeMB = size/128. from sysfiles where name = @DBFileName

-- Get current space used in MB
select @UsedMB = fileproperty( @DBFileName,'SpaceUsed')/128.

select [FileSize] = @SizeMB, [UsedSpace] = @UsedMB, [DBFileName] = @DBFileName

end

select [EndFileSize] = @SizeMB, [EndUsedSpace] = @UsedMB, [DBFileName] = @DBFileName

-- Show Size, Space Used, Unused Space, and Name of all database files
select
[FileSizeMB] =
convert(numeric(10,2),round(a.size/128.,2)),
[UsedSpaceMB] =
convert(numeric(10,2),round(fileproperty( a.name,'SpaceUsed')/128.,2)) ,
[UnusedSpaceMB] =
convert(numeric(10,2),round((a.size-fileproperty( a.name,'SpaceUsed'))/128.,2)) ,
[DBFileName] = a.name
from
sysfiles a




MCITP, Database Administrator
A hodgepodge of Information Technology and Life
LinkedIn Profile
My Twitter
Michael Valentine Jones
Michael Valentine Jones
SSC Guru
SSC Guru (57K reputation)SSC Guru (57K reputation)SSC Guru (57K reputation)SSC Guru (57K reputation)SSC Guru (57K reputation)SSC Guru (57K reputation)SSC Guru (57K reputation)SSC Guru (57K reputation)

Group: General Forum Members
Points: 57282 Visits: 11933
Shrink DB File by Increment to Target Free Space
http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=80355
RSingh-135921
RSingh-135921
Ten Centuries
Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)Ten Centuries (1.2K reputation)

Group: General Forum Members
Points: 1164 Visits: 184
Thanks friends, I will try the script.

It needs to be done over the weekend.

Regards
Jason Crider
Jason Crider
SSCertifiable
SSCertifiable (5.4K reputation)SSCertifiable (5.4K reputation)SSCertifiable (5.4K reputation)SSCertifiable (5.4K reputation)SSCertifiable (5.4K reputation)SSCertifiable (5.4K reputation)SSCertifiable (5.4K reputation)SSCertifiable (5.4K reputation)

Group: General Forum Members
Points: 5373 Visits: 2232
I couldn't find the link or I would have included it. Thanks Michael.

MCITP, Database Administrator
A hodgepodge of Information Technology and Life
LinkedIn Profile
My Twitter
sqldba4u
sqldba4u
SSCrazy
SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)SSCrazy (2.9K reputation)

Group: General Forum Members
Points: 2853 Visits: 285
Tried executing the script but hard luck.
anurag.shekhar
anurag.shekhar
Mr or Mrs. 500
Mr or Mrs. 500 (530 reputation)Mr or Mrs. 500 (530 reputation)Mr or Mrs. 500 (530 reputation)Mr or Mrs. 500 (530 reputation)Mr or Mrs. 500 (530 reputation)Mr or Mrs. 500 (530 reputation)Mr or Mrs. 500 (530 reputation)Mr or Mrs. 500 (530 reputation)

Group: General Forum Members
Points: 530 Visits: 499
You are trying to release a huge amount of space at once. Try releasing it in smaller chunks. You can use the given script above. If it is not working try increasing the size of your datafile by few MBs and then use the script. It should work
Go


Permissions

You can't post new topics.
You can't post topic replies.
You can't post new polls.
You can't post replies to polls.
You can't edit your own topics.
You can't delete your own topics.
You can't edit other topics.
You can't delete other topics.
You can't edit your own posts.
You can't edit other posts.
You can't delete your own posts.
You can't delete other posts.
You can't post events.
You can't edit your own events.
You can't edit other events.
You can't delete your own events.
You can't delete other events.
You can't send private messages.
You can't send emails.
You can read topics.
You can't vote in polls.
You can't upload attachments.
You can download attachments.
You can't post HTML code.
You can't edit HTML code.
You can't post IFCode.
You can't post JavaScript.
You can post emoticons.
You can't post or upload images.

Select a forum








































































































































































SQLServerCentral


Search