Backup Tail Of Log
Nov 1, 2007
I am trying to work with a sample database to better understand disaster recovery. I have setup a scenario with a full backup, several differential backups and several transaction log backups.
In order to simulate a crash, I renamed one of the '.ndf' files and restarted the sql server service. Ideally this would put the database in 'offline' or 'suspect' mode. I should then be able to go in via Mgmt Studio and perform a final backup log to get all the records at the tail of the log.
However, when i am unable to access the database via SSMS - I get the following error:
Msg 945, Level 14, State 2, Line 1
Database 'xxx' canot be opened due to inaccessible files or insufficient memory or disk space. See the SQL Server errorlog for details.
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Apr 28, 2008
I have a small doubt.
full backup F1 6 am
t-log backup T1 7 am.
t-log backup T2 8 am.
suppose if the system crashes at 8.30 am
the restore order is F1 T1 T2.
through this we can restore up to 8 am . then what abt 30 min data.
how can we eliminate that data loss.
generally people say we have to use tail log backup.
if we are not able to acess to sql server how can we take tail log backup.
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Jul 14, 2007
Hi!
i have a question regarding tail log backup.
I have set up logshipping between primary and secondary servers. Now when i want to fail-over to secondary, I am planning to take the tail log backup on primary
backup log primarydb
to disk=N'..',
with norecovery
and then I will restore this tail log backup to secondary
restore log secondarydb
from disk=N'',
with recovery
Will there be any issue with this approach?
Will I be able to recovery the primarydb if i want to, in future? Taking tail log backup doesnt cause any issues? Or do i need to take the full backup of primary before I take tail log backup..in case if I can not recover the primary db after taking the log backup?
How big the tail log backup can be? Will it be of similar size of other normal transactional log backups.?
Any help would be appreciated.
Thanks
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Feb 15, 2007
After a manual backup, I attempted to restore, and got the following error:
System.Data.SqlClient.SqlError: The tail of the log for the database "MSC" has not been backed up. Use BACKUP LOG WITH NORECOVERY to backup the log if it contains work you do not want to lose. Use the WITH REPLACE or WITH STOPAT clause of the RESTORE statement to just overwrite the contents of the log. (Microsoft.SqlServer.Smo)
suggested link to Microsoft site had no articles. How can I fix?
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Oct 29, 2007
When performing a tail log backup to an online database through SSMS, the database is placed in restoring state. Is there a proper procedure to take the database out of restoring state after the backup is completed?
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Feb 19, 2008
I'm having trouble passing parameters into a stored procedure. I can pass an integer parameter with no problems but cannot seem to pass a character parameter.
This first query works fine when I pass 1 and null:
Alter Procedure [dbo].[AMTRANHDRPaidTranHistAPT]
@ADDIVNumber bigint,
@Where varchar(3000)
as
Declare @SQLHolder nvarchar(4000)
Declare @ParamDef nvarchar(500)
Declare @ParamDef2 nvarchar(500)
Declare @IntVar BigInt
Declare @ChrVar varchar(3000)
SET @SQLHolder = 'Select * FROM AMTRANHDR
LEFT JOIN
(
SELECT AMALTERNATE.AMALTCode, AMALTERNATE.AMALTName, AMALTERNATE.AMALTNumber
FROM AMALTERNATE
) AS T2 ON AMTRANHDR.AMALTNumber = T2.AMALTNumber
WHERE AMTRANHDR.AMTRHDeletedOn is null and AMTRANHDR.ADDIVNumber = @ADDIVNum '
SET @ParamDef = N'@ADDIVNum varchar'
SET @ParamDef2 = N'@Wher varchar'
SET @IntVar = @ADDIVNumber
SET @ChrVar = @Where
exec sp_executesql @SQLHolder, @ParamDef, @ADDIVNum = @ADDIVNumber
When I try to add a second parameter it errors with - Incorrect syntax near '@Wher' - when I pass 1 & null or 1 & 'and 1=1':
Alter Procedure [dbo].[AMTRANHDRPaidTranHistAPT]
@ADDIVNumber bigint,
@Where varchar(3000)
as
Declare @SQLHolder nvarchar(4000)
Declare @ParamDef nvarchar(500)
Declare @ParamDef2 nvarchar(500)
Declare @IntVar BigInt
Declare @ChrVar varchar(3000)
SET @SQLHolder = 'Select * FROM AMTRANHDR
LEFT JOIN
(
SELECT AMALTERNATE.AMALTCode, AMALTERNATE.AMALTName, AMALTERNATE.AMALTNumber
FROM AMALTERNATE
) AS T2 ON AMTRANHDR.AMALTNumber = T2.AMALTNumber
WHERE AMTRANHDR.AMTRHDeletedOn is null and AMTRANHDR.ADDIVNumber = @ADDIVNum @Wher'
SET @ParamDef = N'@ADDIVNum varchar'
SET @ParamDef2 = N'@Wher varchar'
SET @IntVar = @ADDIVNumber
SET @ChrVar = @Where
exec sp_executesql @SQLHolder, @ParamDef, @ParamDef2, @ADDIVNum = @ADDIVNumber, @Wher = @Where
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Aug 3, 2010
I am looking a way to use a tail funcion to achieve something like this
If you see the picture i want obtain in one row the total amount of the month over a selected range. If I select months between 1 and 12, i want the values only for the month 12, if a select months between 1 and 10 I want only de value for October and so on.
I tried this simple mdx query:
Select
Tail([Id Fecha Orden Pago].[Mes].allmembers,1) on
Rows
,
{[Measures].[Total Gastos Orden Pago]} on
Columns
From
[CUB_DGM_TestEnamiDW] WHERE
[DIM Programa Fomento].[Nombre Programa Fomento].&[RECONOCIMIENTO DE RESERVAS]
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Jan 31, 2008
Hi there
I'm getting this message on my third automated backup of the transaction logs of the day. Both databases are in full recovery mode, both successfully backed up at 01.00. The transaction logs backed up perfectly happily at 01:30 and 05:30, but failed at 09:30.
The only difference between 05:30 and 09:30's backups is that the log files were shrunk at 08:15 (the databases in question are the ones that sit under ILM2007, and keeping the log files small keeps the system running better).
Is it possible that shrinking the log files causes the database to think that there hasn't been a full database backup?
Thanks
Jane
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Aug 23, 2013
On the SQL Server the Event Viewer shows the same messages and errors every evening between 22:05:00 and 22:08:00. The following information messages are shown for every database:
"I/O is frozen on database <database name>. No user action is required. However, if I/O is not resumed promptly, you could cancel the backup."
"I/O was resumed on database <database name>. No user action is required."
"Database backed up. Database: <database name>, creation date(time): 2003/04/08(09:13:36), pages dumped: 306, first LSN: 44:148:37, last LSN: 44:165:1, number of dump devices: 1, device information: (FILE=1, TYPE=VIRTUAL_DEVICE: {'{A79410F7-4AC5-47CE-9E9B-F91660F1072B}4'}). This is an informational message only. No user action is required."
After the 3 messages the following error message is shown for every database:
"BACKUP failed to complete the command BACKUP LOG <database name>. Check the backup application log for detailed messages."
I have added a Maintenance Plan but these jobs run after 02:00:00 at night.
Where can I find the command or setup which will backup all databases and log files at 22:00:00 in the evening?
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Feb 18, 2015
SQL Server 2008 r2 - 6 GB memory...I attempted a backup on a 500GB database but it was taking way too long. I checked the resources on the box and saw the CPU at 100%. I checked the SQL Server activity log and saw a hung query (user was not even logged on) that had multiple threads so I killed it and now the CPU utilization is back to normal.
Trouble is, now all of the threads in the activity monitor for the backup show 'suspended' and the backup appears to be not doing anything.
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Feb 9, 2004
Hi,
I use the Transact-SQL BACKUP statement in Visual Basic to backup my local MSSQL Database. It give me this error
Error 3041
BACKUP failed to complete the command BACKUP DATABASE [BCFPC] to BCFPCBKP
I already created a backup device called BCFPCBKP and it is backup to the disk.
I tried to run the same BACKUP statement in SQL Query Analyzer and it worked fine. I tried to run my VB application in another PC. It worked fine when i use this command remotely. Can anyone tell me what's the problem?
Thanks in advance
regards,
M.Y. Yap
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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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Aug 3, 2015
Need to restore database,here's the scenario:
Data got deleted on Friday evening, need to have database restored to FRiday afternoon and also some data has been entered on Monday, which needs to be there.
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Dec 28, 2007
Windows 2003 backup utility uses the shadow copy option that allows it to copy open files.
Therefore, can I use this utility to backup the .mdf and .ldf files for my SQL 2000 database?
I can then attach the .mdf files if I need to restore the database to another server.
Can anyone tell me if this is safe? I've tried it and it worked but I'm worried there maybe some lurking danger in using this approach.
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Jul 15, 2015
We take a full backup in the early morning and hourly transaction log back during the working hours for one database in the production server. The application team made certain changes to the design of the said database in their development server. The backup from the development server was restored to the production server during working hours. After the restoration should we take a full backup before next transactional logbackup? Would the transactional log backup with out a full backup after the restoration of a database be valid?
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Mar 13, 2015
I've written a custom script to delete backup files from location. But unable to modify now to count the number of files are deleted. How to modify the script...
/* Script to delete older than N days backup from a specific directory */
USE [db_admin]
GO
IF OBJECT_ID('usp_DeleteBackup', 'P') IS NOT NULL
DROP PROC usp_DeleteBackup
GO
[Code] .....
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Jul 11, 2007
Using SQL Server 2005 Server Management Studio, I attempted to back up a database, and received this error:
Backup failed: System.Data.SqlClient.SqlError: Backup and file manipulation operations (such as ALTER DATABASE ADD FILE) on a database must be serialized. Reissue the satement after the current backup or file manipulation is completed (Microsoft.SqlServer.Smo)
Program location:
at Microsoft.SqlServer.Management.Smo.Backup.SqlBackup(Server srv)
at Microsoft.SqlServer.Management.SqlManagerUI.BackupPropOptions.OnRunNow(Object sender)
Backup Options were set to:
Back up to the existing media set
Overwrite all existing backup sets
I am fairly new to SQL 2005. Can someone help me get past this issue? What other information do I need to provide?
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Dec 29, 2014
I'm looking to schedule a maintenance plan for my databases which I have done.I'd like this database to be copied to another folder and the name altered to include the file name and the current date time stamp.Is this possible in the scheduled maintenance plan?
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Dec 5, 2006
What is the difference between "Files aned File Groups" backup and Partial Backup?
Looks like both are same.. Please comment.
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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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May 10, 2001
This is probably a simple question but I have to ask it anyway. When backing up I can backup to a file on my local drive but I also can create a device to the same location on my local drive. Is this doing the same thing. If I so desire to backup to the local drive(bear with me) what is the difference between creating a device and a file called mybackup or just choosing to backup to a file called mybackup? Should I always create a device? I know these are dumb question but....
Jason
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Dec 7, 2001
How do we know the list of all the backups that are present in a particualr backup device like file# and time of backup taken etc for the purose of restore?
When I run :
RESTORE HEADERONLY FROM BackupDeviceName
it doesn't give that info. Can anyone tell me the exact command to list all the files of a backup device so that I can restore the right one??
Thanks.
Shalini.
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Nov 29, 2007
If my backup starts at 8PM and take 1 hour to complete, will the changes made to the database during that hour be captured in the full backup?
Stated another way, will my backup be a snapshot of:
a) 8PM when the backup started
b) 8PM with some of the changes made between the hour
c) 9PM when the backup finished?
Anybody know the exact way SQL Server handles that logic?
Thanks,
Marc
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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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Apr 15, 2008
I have only one tape drive.
My server is using the SQL server 2005 backup tool and arcserve backup tool to backup different files .
Everytime I need to disable and enable the tape device driver (in device manager /windows) before I can use SQL server 2005 backup tool.
Everytime I need to disable and enable the tape device driver (in device manager /windows) before I can use arcserve backup tool.
It seems that the tape device resource is held by softwares even the tape drive is not in use.
What should I do to make the tape drive shared by different softwares?
Regards,
Manuel
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Sep 8, 2015
I got full backup on daily schedule its taking more space on Drive because each file has more than 25GB.I am using SLQ server 2008R2 so I'm looking to take the backup with compression instead of uncompressed Backup. What are the impacts of compressed backup. Is there any problems with compressed backup while restoring the backup file.
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Aug 4, 2007
Backup failed to complete the command backup database [ ] TO VIRTUAL DEVICE = ' { 853D3FC0 - 45EA -85B1 - 54F0EA379CAC } 24 ' WITH SNAPSHOT , BUFFERCOUNT = 1 , BLOCKSIZE = 1024
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Aug 8, 2007
Hello,
I have MS SQL 2005 server with 300+ databases on it. The application is set up that way that it creates a new database as needed (dynamically). Do not ask me why - I hate this design... So, it can create 3-4 databases a day (random time).
I've scheduled full backup of all databases to run once at night, and it runs just fine. Besides that, I have scheduled tran logs backup of all databases to run every hour. This backup fails from time to time with the following error:
Executing the query "BACKUP LOG [survey_p0886464_test] TO DISK = N'D:\backups\log backups\survey_p0886464_test_backup_200708072300.trn' WITH NOFORMAT, NOINIT, NAME = N'survey_p0886464_test_backup_20070807230002', SKIP, REWIND, NOUNLOAD, STATS = 10
" failed with the following error: "BACKUP LOG cannot be performed because there is no current database backup.
BACKUP LOG is terminating abnormally.". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
So, I think what happens is since my full backup of all databases are scheduled to run only once at night, and tran logs every hour, when new database is created during the day, there is no full backup for it, that is why tran logs backup fails. Becuase after the failure, if I run full backup again, then tran log runs just fine afterwards.
I am new to MS SQL Server, I am mostly working with Sybase IQ. Do you know if I can "trigger" full backup every time when new database created to avoid tran lof failure?
Or is it possible to schedule full backup to run if tran log backup fails?
Any advice will be much appreciated.
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Apr 1, 2008
I should restore a SQL Server 2005 Database from backup. The backup contains three files, named user.bak0, user.bak1 and user.bak2.
How is the syntax of the restore filelistonly and the restore database ... ?
I usualy write
restore filelistonly from disk = 'path and filenam.bak'
restore database. zy
from disk = 'path and filename.bak'
with replace,
move.....
move....
This works but I cannot use it with a splitted backup file. The files are much too big to put together to one file.
Thanks in advance for any help.
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Oct 17, 2006
I have a full backup and several diff backup,now i want to restore
firstly,I restore full backup
RESTORE DATABASE ***
FROM DISK = 'D:databackup200610140000.bak'
WITH NORECOVERY
GO
it's working,then i don;'t know how to continue
Thanks in advance
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Feb 27, 2007
Currently we use a SQL maintenance plan to do a full backup of all our databases daily (about 40 databases on our production server). As you can imagine, this eats up disk space quickly so currently we manually zip the backup files and/or move them to an archive drive. I considered writing an application to walk through the backup folder structure and zip any .bak file it finds, but I know there are some third party tools out there that will backup/restore a MS SQL database.
I was wondering if any of these also zip the backups once they are created. Any recommendations or suggestions are welcome.
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Nov 29, 2001
I want to know how people are backup up their win2k system and SQL 2000 server. If you want a run backup once a night and first backup win2k file system and then run backup using sql agent will that work?
Thanks.
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Oct 2, 2001
SQL 7.0 SP1.
We do SQL Server backup and also third part backup (with SQL agent active) of SQL Server databases.
Sometimes happen this situation:
01.00 SQL Server backup of DB1
01.00 third part backup of DB1
02.00 SQL Server T-LOG backup of DB1
03.00 SQL Server T-LOG backup of DB1
03.30 SQL Server differnatial DB backup of DB1
04.00 SQL Server T-LOG backup of DB1
or this situation:
01.00 SQL Server backup of DB1
02.00 SQL Server T-LOG backup of DB1
03.00 SQL Server T-LOG backup of DB1
03.10 third part backup of DB1
03.30 SQL Server differnatial DB backup of DB1
04.00 SQL Server T-LOG backup of DB1
My questions now are:
Are my SQL Server backups valid (DB,Differenatial and T-LOG)?
In case of a restore operation, can I use my SQL Server backups without problem?
In other words, can we leave the third part backup tool active or it should be taken away?
Can anybody clarify this for me?
Thank you in advance.
Franco
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