Hi
I
have created a job to backup all our database. It works fine and
creates .bak files in default folder. I have scheduled the task to run
every 4 hours.
My question is how can i modify or program this
backup plan to keep the backup files for only last 3 days and delete
older backup files?
Mits
That's simple. I assume you are using SQL Server 2000.
If so, in Enterprise Manager, Expand Management node, select Database Maintenance plans.
Right click the maintenance plan and select properties.
Go to the complete backup tab.
Change the "Remove files older than" option to read 3 days and click ok.
Hope that Helps.
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A few questions for you to think about if you haven't already:
Are the backups stored on a different physical drive than the databases? If not then they absolutely should be.|||
Yes, it's simple in SQL Server 2000. It's not simple at all in SQL Server 2005. We have just recently set up our first few SQL 2005 systems, and I cannot find any way to do this (remove older backup files) using the Database Maintenance Wizard, or Database Maintenance plans in general. There is a database maintenance task called "Cleanup History," but when looking deeper into this task all it does is called a system stored procedure msdb.dbo.sp_delete_backuphistory. When looking at the code for this stored procedure, it does indeed clean out the history in the msdb tables, but it doesn't reach out to the filesystem where the backup files are created and remove the older ones.
This functionality, which worked so wonderfully in SQL Server 2000 and was so central to plans involving backups staged to disk before moving them to tape, appears to have been removed in SQL Server 2005. I cannot understand why this would be so, and I hope that I am wrong and just missing something here.
I too would like to know if there is a mechanism for automatic removal of older backup files in SQL 2005.
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 Matt Fraser wrote: |
|
| Yes, it's simple in SQL Server 2000. It's not simple at all in SQL Server 2005. We have just recently set up our first few SQL 2005 systems, and I cannot find any way to do this (remove older backup files) using the Database Maintenance Wizard, or Database Maintenance plans in general. There is a database maintenance task called "Cleanup History," but when looking deeper into this task all it does is called a system stored procedure msdb.dbo.sp_delete_backuphistory. When looking at the code for this stored procedure, it does indeed clean out the history in the msdb tables, but it doesn't reach out to the filesystem where the backup files are created and remove the older ones. This functionality, which worked so wonderfully in SQL Server 2000 and was so central to plans involving backups staged to disk before moving them to tape, appears to have been removed in SQL Server 2005. I cannot understand why this would be so, and I hope that I am wrong and just missing something here. I too would like to know if there is a mechanism for automatic removal of older backup files in SQL 2005. |
Matt,
I discovered this issue as well with SQL 2005, and I am perplexed as to why we have a way to back up databases but no way to manage the retention of old backups which can cause our disks to fill up. As a workaround I found this script on the web and use it to delete backup files older than "x" days, and it has worked flawlessly from the first time I started using it.
There are a few different ways to implement this workaround, but I have found the easiest way to is to copy the code below into a Notepad and save it as a .vbs file in the root of your backup drive, you might name the file something like DeleteOldBackups.vbs. This way you would simply create a Scheduled Task that points to this file and set the task to run either before or after all of your backups complete.
Make sure you set the directory paths and number of days to meet your needs.
Option Explicit
on error resume next
Dim oFSO
Dim sDirectoryPath
Dim oFolder
Dim oFileCollection
Dim oFile
Dim iDaysOld
'Delete database backup files older than 5 days
iDaysOld = 4
Set oFSO = CreateObject("Scripting.FileSystemObject")
sDirectoryPath = ".\databackups"
set oFolder = oFSO.GetFolder(sDirectoryPath)
set oFileCollection = oFolder.Files
'If database backup files are older than 5 days, delete them.
For each oFile in oFileCollection
If oFile.DateLastModified < (Date() - iDaysOld) Then
oFile.Delete(True)
End If
Next
'Delete database log file backups older than 5 days
iDaysOld = 4
Set oFSO = CreateObject("Scripting.FileSystemObject")
sDirectoryPath = ".\logfilebackups"
set oFolder = oFSO.GetFolder(sDirectoryPath)
set oFileCollection = oFolder.Files
'If database log file backups are older than 5 days, delete them.
For each oFile in oFileCollection
If oFile.DateLastModified < (Date() - iDaysOld) Then
oFile.Delete(True)
End If
Next
'Clean up
Set oFSO = Nothing
Set oFolder = Nothing
Set oFileCollection = Nothing
Set oFile = Nothing
This has worked great for me, hopefully it will be useful to you and others as well.
|||Thank you everyone for you responses and i like the idea of script and i honestly agree with
Matt Fraser.I am using SQL Server 2005 Enterprise Edition.
I have had it working on SQL Server 2000 using a batch file using following command and this batch file was scheduled to run on sepecific time of the day. This will backup DB and Log files.
SQLMAINT -D DBName -BkUpDB E:\SQLBKUP -BkUpMedia DISK -DelBkUps
3days -VrfyBackup
The backup is taken on a shared Drive on the DB Server which will be backed up in the overall daily backup plan on tape. So everyday on tape, we will have the backup of last 3 days and we dont have to use hard disk space.
Regarding disaster recovery - we literally cant have any downtime from monday to saturday, but, couple of hours on Sunday could be arranged. Backup time is about 10-15 mins.
Yes I regularly restore the backups to check the validity.
I am quiet sure that this batch file will work for SQL Server 2005, but i not particularly keen on using batch file(and if i have to, i will use it). I want to do it through Maintenance Plan.
Mits|||
I also use script to achieve this at my customers (WMI/VB Script). It's much more flexible and you can code it to do what you want. I've done a few custom versions, if, for example, they want to keep N number of fulls, and only a certain number of days worth of transaction logs, etc.
It works very well, but as you hint at Mits, it is outside the control of SQL Server.
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I did some digging and I found out that there is in fact a way to delete old backup files within the SQL management studio. I was told this functionality was going to be added with SP1 and apparently it was, just not where I expected to find it. I haven't had a chance to test it very much so I'm going to continue running my VB Script, but it is there.
Basically there are two ways to create backup jobs for your databases from within the SQL management studio Maintenence Plan area, manually or by using the wizard. If you choose to create your backup plans manually you will see the functionality to delete old backups right away, but here is how I found it because I always like to use the wizard instead.
In the SQL management studio under maintenence plans, right click maintenence plans and select the wizard. Follow the wizard all the way through to create your backup plan, you will not see any option to delete backup files older than "x" days, at the end save your backup plan.
Once your backup plan is visible under maintenence plans, right click it, and click on modify, this will open your backup plan in what appears to be a development environment window and you will see several boxes connected to each other with either green or blue arrows. Look down in the lower left hand corner and you will see a toolbox with about eight different components in it.
Select the component called Maintenence Cleanup History and drag it onto the page with your other boxes. Right click this new box and click edit, when it opens up you will see options to delete backup files older than x days. You can configure it, and then you will need to connect it to the other boxes and save the plan and then run it to test it. I tried it a couple of times and couldn't get it to work so I will have to keep testing it.
The ability to delete old backup files does exit, just not where I thought I would find it.
|||thank you very much andy
I try adding cleanup history step and see if i can get it working.
Mits|||
Well done, Andy. It seems that SP1 did in fact add this functionality, but the Wizard hasn't been updated yet to include it. So, the key is to add the step for "Maintenance Cleanup Task," recognizing that it's different from "History Cleanup Task" (which is included in the Wizard).
I've added it to my maintenance plan, and in about a week's time I should know if it's working properly.
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This appears to work, but I won't be able to tell until tonight since Microsoft has removed the ability to delete files older than x hours. Only days, weeks, months, and years. I always used hours because of variations in backup duration. If a backup had the time of 8:01 one night and 8:00 the next, I would end up with both on the drive if I picked the 1 day option. I always used 23 hours to avoid the drive filling up. It appears that option is gone. Grrrrr! It is annoying to have a feature that you use and rely on only to have it removed.
Microsoft, please add back the hours option in a service pack.
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I think the frustration expressed in this thread is entirely justified and I'll ensure that the tools team here sees this.
As added weight, please go to connect.microsoft.com and give this feedback - this will open issues directly in our bug database and you will get feedback from the relevant teams.
Thanks
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Thanks for the suggestion! I didn't know about that site. I see a closed item where the response was that "hours" would come back as a duration in SP2. I voted for that and the open item about the same issue.
I also authored an item to make the cleanup task available through the wizard as it was in SQL2000.
Thanks for taking time to listen to our concerns and point me to the right forum for airing them. Your responsiveness does your employer proud.
|||how can I set the schedule of backup as follows using Maintenance Job.
I want to run the backup plan ever 285 mins or 4.75 hours starting at 8.15 in the morning and finishing at 9.15 at night.
I have tried but it wont let me put anything more then 60 mins or 4.75 hours.
Mits|||
In sql2005 the retention period comes as common sql server setting.when check properties of sql server in database setting you have option to set retention period
Matt Fraser wrote: