Restoring Differential Backup

Feb 9, 2008

Hi,
Im trying to restore the differential backup,I have to restore the full backup first and then restore the differential backup.Can any body tell me the code for this?

my program is like this
--for fullbackup
if type=D
begin
restore database databasename
from disk=path
end
--for differential backup
else if type=I
???

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Restoring Separate Differential Backup Files

Dec 6, 2007

Hi,

I'm making backups of the database by first making a full backup and then differential backups. The differentials are backed up to separate files.

Restore of the full backup works fine, but I can't restore a differential backup. In Management Studio Express, I first do a full backup restore with option NO RECOVERY and then try to restore a differential backup. But this failes with the message:

"This differential backup cannot be restored because the database has not been restored to the correct earlier state."

Is it possible to restore a differential backup that is backed up to a separate file?

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Restoring Differential Backups

Feb 14, 2002

I am trying to set up a process where a differential backup is taken daily and applied to another DB. For some reason I cannot get the diff backup to restore. The full DB backup restored fine.

Server: Msg 3136, Level 16, State 1, Line 4
Cannot apply the differential backup on device 'diff' to database 'test'.
Server: Msg 3013, Level 16, State 1, Line 4
Backup or restore operation terminating abnormally.

Any suggestions? Thanks!

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Problem While Restoring Differential Back Up

Nov 16, 2007

Hi Expets!!!!!!!!
I did full back up and restore it. I didn't face any problem while restoring it. After that, I did differential back up. And now trying to restore it. I saw name of all the files at the time of full back up. It were something like ABC.MDF, ABC1.NDF,ABC2.NDF,ABC3.NDF,ABC4.NDF,ABC5.NDF, ABC_log.LDF, ABC_log2.LDF. But now, when I am trying to restore differential back up, I am getting different names, such as, ABC.MDF, ABC2.NDF,ABC3.NDF,ABC4.NDF,ABC5.NDF, ABC6.NDF,ABC_log.LDF, ABC_log2.LDF.It means that, ABC1.NDF file is missing and this time I am getting ABC6.NDF as a extra file. But total number of files are same. How is it possible? I checked, in the original database, there names of the files math exactly with what I am getting in differential back up file. Now I am getting one error message while trying to do differential back up. Any idea what is going on and how to solve this problem? The error message is as follows:-





TITLE: Microsoft SQL Server Management Studio
------------------------------

Restore failed for Server 'SAT01PNGRSQL02'. (Microsoft.SqlServer.Smo)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=9.00.3042.00&EvtSrc=Microsoft.SqlServer.Management.Smo.ExceptionTemplates.FailedOperationExceptionText&EvtID=Restore+Server&LinkId=20476

------------------------------
ADDITIONAL INFORMATION:

System.Data.SqlClient.SqlError: This differential backup cannot be restored because the database has not been restored to the correct earlier state. (Microsoft.SqlServer.Smo)

For help, click: http://go.microsoft.com/fwlink?ProdName=Microsoft+SQL+Server&ProdVer=9.00.3042.00&LinkId=20


Today is my dead line for this issue,,,
Can you please give me the answer as quick as possible
and that would be very appriciable.....


-Thanks N Regards,
Kanthi.

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Feb 19, 2015

Using Ola Hallengren's scripts I do a full backup of a database on a Sunday. Then differential backups every 6 hours and log backups every hour. I would like to keep a full week of backups based off the full backup done on Sunday. Is there a way for me to clear out the diff and log folders after the successful full backup on Sunday nights?

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Recovery :: Differential Backup Much Larger Than Database / Full Backup

Nov 16, 2015

I have a database that is just over 1.5GB and the Full backup that is 13GB not sure how this is since we have compression on for full backups and my other full backups are much smaller than there respective databases...Now my full backup is taken every Sunday night and the differentials are taken every 6 hours after the full backup. Now I have been thrown into this DBA role with little to no experience just what I have picked up and read. So my understanding of backups are limited but what I think I understand is that we take a full backup and the differential only captures what changes in the database so my question is why is my database 1.5GB but my differential is 15.4GB? I have others database that are on the same instance and don't seem to have this problem. I also just noticed that we do not rebuild the index before a full backup like we do on other instances...

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Differential Backup Fails Because Of Erroneous Full Backup

Jul 19, 2007

Hi

I am using the Simple recovery model and I'm taking a weekly full backup each Monday morning with differentials taken every 4 hours during the day.

On Wednesday afternoon, a programmer ran a process that corrupted the db and I had to restore to the most recent differential. It was 5pm in the afternoon and a differential backup had just occured at 4pm. No problem, I figured.

I restored the full backup from Monday morning and tried to restore the most recent differential backup. The differential restore failed. Since I had used T-SQL for the initial attempt, I tried using Enterprise Manager to try again.

When viewing the backup history, I see my initial full backup taken on Monday plus all the differentials. BUT, on closer inspection, I noticed another full backup in the backup history that was taken early Tuesday morning. I can't figure out where this Tuesday morning full backup came from. It wasn't taken by me (or scheduled by me) and I'm the only one with access to the server. My full backups are usually named something like HCMPRP_20070718_FULL.bak. This erroneous full backup was named something like HCMPRP_03a_361adk2k_dd53.bak. It seemed like it was a system generated name. Not something I would choose. To top it off, I could not find this backup file anywhere on the server and when I tried to restore using this full backup, it failed.

Does anyone have any clues as to where this full backup might come from? Does SQL Server trigger a full backup on its own if some threshold is reached?

I ended up having to restore using the differential taken just before this erroneous full backup and lost a day of transactions.

Any insight is greatly appreciated.

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Jun 13, 2007

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Differential Backup Not Smaller Than The Full Backup

Jun 6, 2007

Hi,



Using SQL Server 2005, we have a 2.8Gb database under the Simple recovery model. The database contains ~50M rows and each night ~60k rows are loaded(appended) to the database by a SSIS task.



We configured a Maintenance Plan which is executed once a week to perform a full backup of the database. The resulting backup file is ~2.8Gb, as expected.



We also configured another Maintenance Plan which is executed every day, a few hours after the SSIS task is executed, to perform a differential backup. To our surprise, the resulting backup file is about the same size as the full backup, ~2.8Gb when it should only be a few MB (only 60k rows are added to the database)



When we launch the "Restore Database" wizzard we clearly see the different backup set, Full and Differential but they all have about the same size (same for the physical backup file on disk).



Is there anything we are missing, why are the differential backup that big?



Thanks for any advice.

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May 3, 2001

SQL 7.0 SP1 on NT 4.0 EE

Thru maintenance plan I backup my DBs every night and the T-Logs every hour.
Now I have to set the option "select into/bulk copy" on one DB.
I schedule the differential backup every 3 hour with option "overwrite existing media", wich is, in my case, one file on disk.
My sequence of T-Logs is valid even if a non logged operations occurs?
If I have to restore this DB can I use the last full backup + the differential backup + all the logs in between?

example:
22.00 full db backup
08.00 t-log
09.00 t-log
10.00 t-log
10.30 diff backup
11.00 t-log
12.00 t-log
13.30 diff backup
14.00 t-log
15.00 t-log

Or my log are unusuable because the non logged operation?
Thank you very much.

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I trying to created a Differential backup and I get the following error. Can anyone help?

The volume on device 'd:MSSQL7BACKUPCPIDATABKUP.BAK' is not part of a multifamily (RAID) media set. Use WITH FORMAT to form a new RAID set. [SQLSTATE 42000] (Error 3259) Backup or restore operation terminating abnormally. [SQLSTATE 42000] (Error 3013). The step failed.

Thanks

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Sep 19, 2001

I'm trying to create a differential backup job that run hourly and that creates a different differential files. Ext. dbfilename1am, dbfilename2am, dbfilename3am ect... Can I do this with one job? Are do I have to create a differential backup job for each hour?

Thanks

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Hi,

I've defined a maintenance plan in SQL2005, which creates a differential backup of a DB daily. Suppose I'm having differential backups from May, 10 to May, 14 but backup files of May 12 and May 13 are lost (deleted unexpectedly). Am I losing some data, if I restore from backup file of May 14?

Thanks & Regards,

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Thanks Reggie

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Jun 14, 2000

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I'm trying to run a differential backup on our new 7.0 box. It fails with an error message number 3242 "The file on Device 'E:MyFile' is not a valid Microsoft Tape Format backup set."

Why "Tape Format" if I said "Backup database [mydb] to disk"?..

When I run exactly the same query without "Differential" I got a full db backup.

Am I doing something wrong?

Thank you,
Anastasia.

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Oct 8, 2006

I create a full backup followed by daily differential backup, when I restore database from the fifth or later differential item, I get the following Error Message:

System.Data.SqlClient.SqlError: This differential backup cannot be restored because the database has not been restored to the earlier state. (Microsoft.SqlServer.Smo)

It seems that there is an error when the fifth differential backup occurred, It's a disaster, how can I do, help!

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######################
IMPOSSIBLE = I+M+POSSIBLE

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Cannot Perform A Differential Backup For Database

Feb 13, 2007

hi seniors ,

I am running sql server 2005 under details

Microsoft SQL Server 2005 - 9.00.3033.00 (X64)

Copyright (c) 1988-2005 Microsoft Corporation

Standard Edition (64-bit)
on Windows NT 5.2 (Build 3790: Service Pack 1)

When i attempt to take differentail backup i receieved following message


"Cannot perform a differential backup for database "abc",
because a current database backup does not exist.
Perform a full database backup by reissuing BACKUP DATABASE,
omitting the WITH DIFFERENTIAL option. [SQLSTATE 42000] (Error 3035)
BACKUP DATABASE is terminating abnormally. [SQLSTATE 42000] (Error 3013)."

when i search this msg on net than i find that it is microsoft bug 863 so i found hotfixes
about this problem and tried to install but unable to install (On installation screen select feature i am unable to click on check box)

Can any one help me regarding to this issue .And more is.. full back of db "abc" exists and i never changed its location nor rename file name.



Regards

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Apr 9, 2008

When we do a full backup the .bak file is 700MB but in the meanwhile our differential backup has grown to a size of 20GB. The backup set expires in 1 day and if the backup file already exists we "append" to it.

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Sep 11, 2007



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Is there a way to set both full and differential to just one database.

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Please let me know

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Oct 17, 2006

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Can you NOT run differential backups on the Master table?

Thanks.

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Dec 8, 2008

I have just begun to try out differential backups. Almost every reference I found on the internet said to use a .dif file extension. Books Online "Back Up Database Task (Maintenance Plan) MS.SQLCC.v9/MS.SQLSVR.v9.en/uirfsql9/html/ed1ef012-fa14-4ba5-bafe-d1527ba065b3.htm only says :

Backup file extension Specify the extension to use for the backup files. The default is .bak.
                                                                                                                                   
Using .dif for the differential shows "Microsoft Office Excel Data Interchange Format" as the type when looking at the backup folder. URL... indicates that .dif has 11 different uses, including "Difference data file." In a couple of posts in this forum in April and May of this year David Dye said that the file extension for differential backups is .bak, the same as for the full backup.
 
If this is the case, this would cause a problem with our maintenance plan policy which is to retain the two most recent backup files on the server. If we do a full backup for the base on the weekend and differential backups the rest of the week, our full backup would have to be restored from out tape system before we could do a restore. Recoveries are pretty rare, but when we get that panicked phone call that someone accidently deleted all the records of a major client, time is of the essence in getting that point in time restore done.

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Differential Backup File Fails To Restore.

Jul 19, 2007

We are doing the following steps:-

1. Weekly Full Bckup

2.Daily Differential backup

3.hr Log back up

The following command works fine for all the Backups. it means backup file is fine.

RESTORE FILELISTONLY from DISK = 'D:BackupewDB_ full.BAK'

RESTORE HEADERONLY FROM DISK = 'D:BackupewDB_ ull.BAK'

RESTORE LABELONLY FROM DISK = 'D:BackupewTest_full.BAK'

RESTORE VERIFYONLY FROM DISK = 'D:BackupewTest_full.BAK'



Also The full back up restoration works fine:

RESTORE DATABASE Test3 FROM DISK = 'D:BackupewTest_full.BAK'

WITH MOVE 'Test2_Data' TO 'F:MSSQL2KMSSQLdataTest2Net_Data.MDF',

MOVE 'Test2_Log' TO 'F:MSSQL2KMSSQLdataTest2Net_Log.LDF',

NORECOVERY

GO

/* RESULT :

Processed 1032 pages for database 'Test3', file 'test2_Data' on file 1.

Processed 1 pages for database 'Test3', file 'test2_Log' on file 1.

RESTORE DATABASE successfully processed 1033 pages in 1.907 seconds (4.433 MB/sec).

*/

But While restoring the Differential file it throws error:

RESTORE DATABASE Test3 from DISK = 'D:Backupew est2_Diff1.bak'

WITH NORECOVERY

GO



Msg 3136, Level 16, State 0, Line 1

Cannot apply the backup on device 'D:Backupew est2_Diff1.bak' to database 'Test3'.

Msg 3013, Level 16, State 1, Line 1

RESTORE DATABASE is terminating abnormally.

I checked the SQL Server Log no error msg corresponding Differential backup restore.



I don't know how to proceed further.Can any one guide me how to over come this..



Thanks !

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