Delete backup files older than 7 days - sql

Question

Using osql command, SSQL backup of a database is created.
It is saved to Disk.
Then renamed to match the date of the day backup was taken.
All these files are saved in a single folder all the time.
for example:
Batch1.bat does the following
1) Created backup.bak
2) renamed to backup 12-13-2009.bak (this is done by the combination of % ~ - etc to get the date parameter)
This is now automated to take backup everyday by Task scheduler in Windows.
Can the batch file also be modified to delete backup files older than 7 days? if so, how ?
If it is not possible via batch file, other than manually deleting the files are there any other alternatives to automate the deleting job ?
Thanks in advance, Balaji S

Answer 1

If you have RoboCopy (part of the Windows Server 2003 Resource Kit Tools) installed.
The following lines can be added to your Batch1.bat file to move and delete files older than seven days:
ROBOCOPY C:\Temp\New C:\Temp\Old *.* /move /minage:7
DEL C:\Temp\Old\*.*
The first row moves all files that are older than seven days in the 'New' folder to the 'Old' folder.
The second row deletes all files in the 'Old' folder

Answer 2

I'm using the same technique to make a backup from database. I've created a stored procedure as follows.
Create Procedure [dbo].[CreateBackup]
As
Begin
Declare #path nvarchar(256),
#filename nvarchar(256),
#currentDateTime datetime
Set #currentDateTime = GetDate()
Set #path = 'C:\DBBackup\'
Set #filename = #path + Cast(DatePart(month, #currentDateTime) As nvarchar) + Cast(DatePart(day, #currentDateTime) As nvarchar) + '.bak'
Backup Database Foo To Disk = #filename
Set #currentDateTime = DateAdd(day, -3, #currentDateTime)
Set #filename = 'del ' + #path + Cast(DatePart(month, #currentDateTime) As nvarchar) + Cast(DatePart(day, #currentDateTime) As nvarchar) + '.bak'
Exec xp_cmdshell #filename
End
To use the xp_cmdshell, you should enable it before.
http://weblogs.sqlteam.com/tarad/archive/2006/09/14/12103.aspx

Answer 3

enter code hereThis procedure backup given database(s) for specified #retentionPeriod to a given network location (or local)
USE [master]
GO
/****** Object: StoredProcedure [dbo].[scrDoRemoteBackup] Script Date: 12/13/2009 09:20:20 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
ALTER proc [dbo].[scrDoRemoteBackup] as
set NoCount on
declare #dbName Varchar(100)
,#fName varchar(100)
,#RetentionPeriod Int -- in days
,#i int
,#n int
,#NetPath varchar(400)
,#BackupSetName Varchar(300)
,#params nvarchar(300)
,#q nvarchar(3400)
,#cmd nvarchar(4000)
,#error int
Declare #DataBases2Backup table(id int identity(1,1),dbName Varchar(100))
-- total back time 4:24 2nd Nov 06
set #NetPath='\\rapidsnet01s\RapidsDbBackup'
set #netPath='\\mail1\RapidsDbBackup'
set #netPath = '\\rapidsweb02p\Backup'
set #netPath='\\BUP2D-2K\_RapidsDB$\SAABZXO1D' -- 26th Feb 2008 - ap/li rapidsweb02p\backup space runout
set #netPath='\\saacsfs\RapidsBackup\SAABZXo1d' -- 22nd Oct 2009
---- insert all databaes to be backed up
--Insert #DataBases2Backup select 'Rapids'
--Insert #DataBases2Backup select 'GDC'
--Insert #DataBases2Backup select 'Master'
--
--
----Insert #DataBases2Backup select 'GDCComDev'
--
--Insert #DataBases2Backup select 'saaNCP'
----Insert #DataBases2Backup select 'US_Reps'
--Insert #DataBases2Backup select 'saaPackageWorx'
--Insert #DataBases2Backup select 'saaExtract'
Insert #DataBases2Backup select 'Master'
Insert #DataBases2Backup select 'QuickPickDBprod'
Insert #DataBases2Backup select 'QuickPickDBStaging'
--Set #RetentionPeriod = 13
Set #RetentionPeriod = 6 -- For Terry McCraith Jan06'09
select #n= count(*) from #DataBases2Backup
set #i = 1;
-- Set the Network path for the Backup location ;
-- ( re-establish the connection if the connection was broken)
set #q = 'net use '+#Netpath --+' * /USER:apeiris#armlink.com'
print #q
exec master.dbo.xp_cmdShell #q
While #i <= #n
Begin
select #dbName=dbName from #DataBases2Backup where id = #i
-- Get the backupset name prior to Retention Period
set #BackupSetName=#dbName+ dbo.fnGetDateNameBefore(GetDate(),#RetentionPeriod)
-- Delete the old backup device
set #q='Del '+#NetPath+'\'+#BackupSetName+'.bkp'
exec master.dbo.xp_cmdShell #q
-- Now get the current backupset name and backit up
set #BackupSetName=#dbName+ dbo.fnGetDateNameBefore(GetDate(),0)
set #fname = #netPath +'\'+#BackupSetName+'.bkp'
print 'Fname ='+#fname
Print 'Drop and Add Dumpdevice ' + #dbname + ' Fname='+#fname
exec #error=sp_dropDevice #dbname
print 'Error drop device-----------'+Convert(varchar,#error)+':'+Convert(varchar,##error)
exec #error=sp_addumpDevice 'disk',#dbName,#fname
exec sp_helpdevice #dbName
print 'Error -----------'+Convert(varchar,#error)
set #i=#i+1
if #error <> 0
Begin
print 'send alert'
exec saabzt01p.alerts.dbo.prDispatchAlertV2 'RemoteDBBackupError' ,##servername,'test','RemoteDBBackupError','test'
End
else
Begin
Backup Log #dbname with truncate_only
Backup Database #dbname to #dbname with format
if ##Error <> 0
Begin
print 'Send alert'
exec saabzt01p.alerts.dbo.prDispatchAlertV2 'RemoteDBBackupError',##servername,'test','RemoteDBBackupError','test'
Goto Errors
end
end
End
Errors:
And here are supporting functions
-- This function returns oldest data set name compared to retentionPeriod
Create function [dbo].[fnGetDateNameBefore](#d Datetime,#nDays int) returns varchar(40) as
Begin
declare #OD datetime
,#dName Varchar(40);
set #OD=DateAdd(dd,#nDays * -1,#d)
select #dName= DateName(yy,#od)+Left(DateName(Month,#od),3)+DateName(dd,#od)
Return #dName
end
-- This function returns oldest data set name compared to retentionPeriod
Create function [dbo].[fnGetDateNameBefore](#d Datetime,#nDays int) returns varchar(40) as
Begin
declare #OD datetime
,#dName Varchar(40);
set #OD=DateAdd(dd,#nDays * -1,#d)
select #dName= DateName(yy,#od)+Left(DateName(Month,#od),3)+DateName(dd,#od)
Return #dName
end

Answer 4

Nope don't do it that way. Do it this way.
Use SQL backup manager from the command line and script out a schedlue using Backup manager express. This is included and located in your SQL bin folder. Run this once, then modify the registry if it gives you an error. Then run again, ot should work. Perform this methodolgy to obtian your backups on a scheduled basis.