January 31, 2009 at 11:19 pm
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
February 2, 2009 at 9:05 am
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 🙂
February 2, 2009 at 10:19 pm
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
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February 2, 2009 at 11:23 pm
Shrink DB File by Increment to Target Free Space
February 3, 2009 at 3:08 am
Thanks friends, I will try the script.
It needs to be done over the weekend.
Regards
February 3, 2009 at 7:07 am
I couldn't find the link or I would have included it. Thanks Michael.
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September 6, 2010 at 10:15 pm
Tried executing the script but hard luck.
September 6, 2010 at 11:36 pm
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
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