Restore To Point In Time WITHOUT Full Backup?
Oct 27, 2007
Greetings, All -
Is it possible to restore to a point in time without a preexisting full backup? The situation is this:
I have a table in the DB from which an unknown number of records were accidentally deleted. The table in questio has about 2 million records; the user ran a query to delete all records from the table by accident, and cancelled the query after about 3 seconds.
The DB recovery mode is full, so I should be able to do a point in time restore to go back to just before the deletion, but unfortunately, the DB has never been backed up, so I have no backup to work from.
The DB has not been used since the incident, and is otherwise operational, but I need to recover these records if at all possible. All the instructions I've seen for this involve restoring from a full backup first, then restoring the log backup second. Is there any way for me to accomplish the same task?
Mark Faulcon
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Jul 23, 2005
Database is OK. I just need to roll back all the transactions until certainpoint in time. How to do it?
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Mar 26, 2008
Hello all,
First off, I appreciate the time that those of you reading and responding to this request are offering. My quesiton is a theoretical and hopefully simple one, and yet I have been unable to find an answer to it on other searches or sources.
Here's the situation. I am working with SQL Server 2005 on a Windows Server 2003 machine. I have a series of databases, all of which are in Full recovery mode, using a backup device for the full database backups and a separate device for the log backups. The full backups are run every four days during non-business hours. The log backups are run every half hour.
Last week, one of my coworkers found that some rarely-used data was unavailable, and wanted to restore a database to a point in time where the data was available. He told me that point in time was some time back in November.
To accomplish this, I restored the database (in a separate database, as to not overwrite my production database) using the Point in Time Recovery option. I selected November from the "To a point in time" window (I should note that this window is always grey, never white like most active windows, it seems), and the full database backup and the subsequent logs all became available in the "Select the backup sets to restore" window.
I then tried a bevy of different options from the "Options" screen. However, every restore succeeds (ie: it doesn't error out), but seems to be bringing the database back to a current point in time. It's never actually going back to the point in time I specify.
My questions are as follows:
a) Is it possible to do a point in time recovery to a point in time BEFORE the last full database backup?
b) If so, what options would you recommend I use? (ie: "Overwrite the existing database", restore with recovery, etc etc).
I again appreciate any and all advice I receive, and I look forward to hearing from anyone and everyone on this topic. Thank you.
Ryan
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Feb 25, 2015
We have a 1TB Database. Our backup strategy looks like this.
Weekly Full backups - Saturday 10pm. (Takes anywhere between 5 - 9 hours)
twice Nightly Diffs (8:30p and 2:30am - Mid week this takes roughly 1.5 hours)
Hourly Log backups starting at 4:00am until 11pm.
I have an issue where I need to restore to 3:00 today. If my (2:30a)Diff is still running at that recovery point.
I am getting an error when trying to restore Full/2:30a Diff/4a Log with a stopat 3:00a.
Error telling me my log backup is incorrectly formed.
Can I, in fact, restore to this point at all? Do I need to go back to my previous Diff (8:30p) and restore the logs, if so, which ones?
My nighttime Diff ran from 8:30 - 10p.
I have logs at 9p, 10p, 11p, 4a
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Oct 23, 2015
I make two full backups on Oct 1 and Oct 10. I want to restore the server to a state in Oct 5. So I just do as follows:
1.Perform a transaction log backup on the server on Oct 23. I have never backup transaction log in the past.
2. Restore the server with Oct 1 full backup with NORECOVERY option.
3.Try to restore to the point at Oct 5 12:00, with the transaction log.
But the restore fails and SQL Server said the transaction log does not contain the point. The point is too early. Why? Also my .LDF file is about 13G, but the transaction log backup is only 200MB. Why?
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Oct 23, 2015
I make two full backups on Oct 1 and Oct 10. I want to restore the server to a state in Oct 5. So I just do as follows:
Perform a transaction log backup on the server on Oct 23. I have never backup transaction log in the past. Restore the server with Oct 1 full backup with NORECOVERY option.Try to restore to the point at Oct 5 12:00, with the transaction log.
But the restore fails and SQL Server said the transaction log does not contain the point. The point is too early. Why? Also my .LDF file is about 13G, but the transaction log backup is only 200MB. Why?
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Oct 23, 2015
I make two full backups on Oct 1 and Oct 10. I want to restore the server to a state in Oct 5. So I just do as follows:
1.Perform a transaction log backup on the server on Oct 23. I have never backup transaction log in the past.
2. Restore the server with Oct 1 full backup with NORECOVERY option.
3.Try to restore to the point at Oct 5 12:00, with the transaction log.
But the restore fails and SQL Server said the transaction log does not contain the point. The point is too early. Why? Also my .LDF file is about 13G, but the transaction log backup is only 200MB. Why?
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Dec 8, 1999
I can't "point in time restore" a test DB if I had only a Full DB Backup (with overwrite option).
Example
12:00 Fullbackup new (overwrite)
12:01 update any rows
12:02 update any rows
12:03 delete any rows
12:05 Transaction Log backup (overwrite)
RESTORE: We can't set "point in Time" to 12:01 od 12:02 ???
why
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Mar 13, 2000
Hi
1. could any one explain point in time recovery.
2. Problem we had was the database froze 'inload' while doing transaction restore. Is there any way to recover this
regards
rajeev
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Nov 26, 2004
My database is in full recovery mode. When I have created some full backups of the database, I would like try to point in time restore. Unfortunately, this option is greyed out on the restore screen. What have I done wrong?
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Jan 31, 2014
I know NOTHING about SQL. I have a SQL 2005 database. I'm trying to restore a point in time. I get the error:
RESTORE FAILED...AMT12-2-13.TRN... CANNOT FIND THE FILE SPECIFIED.
The file exists, and in the proper location. something is wrong with it. Is there any way to rebuild the entire TRN so that a point in time recovery will work?
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Nov 7, 2007
I have a SQLServer 2005 database running in Windows 2003 Advanced Server environment. I want to restore from the backup to 2 days back point in time. I am using the Microsoft SQLServer Managment Studio. After I pick the file and specify the time I keep getting the error:
System.Data.SqlClient.SqlError: RESTORE cannot process database 'DBNAME' because it is in use by this session. It is recommended that the master database be used when performing this operation. (Microsoft.SqlServer.Smo)
I did a server reboot to clear off any hanging session.Stil I am getting the message. Please suggest.
Thanks
R
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Jul 20, 2005
I have full backup of database at 13:00and another full backup at 17:00.I've made backup of transaction log at 17:05When I try to restore database to state at15:10 (point in time) , the dialogue in Enterprise Managersays that only time after 17:05 is valid.It seems to me that I've done something wrong at 17:05 while takingtrans. log backup.But, again, if I have full backups at 13:00 and 17:00 restoringdatabase to point in time at 15:10 should be possible ?!Any help is appreciated.Pagus
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Nov 7, 2007
I have a SQLServer 2005 database. I want to restore from the backup to 2 days back point in time. I am using the Microsoft SQLServer Managment Studio. After I pick the file and specify the time I keep getting the error:
[System.Data.SqlClient.SqlError: RESTORE cannot process database 'DBNAME' because it is in use by this session. It is recommended that the master database be used when performing this operation. (Microsoft.SqlServer.Smo)
I did a server reboot to clear off any hanging session.Stil I am getting the message. Please suggest.
Thanks
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Jun 25, 2015
I am reading about the RESTORE command to a point in time using logs, I would like to know the minimum point in time recovery for a backup image using T-SQL command before applying a log restore and what are the log ranges needed for the restore during restore.
My Version 2008 R2
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Mar 2, 2002
Hello,
I have lost a table's contents and need to restore them urgently. I backed up the database. I selected the backup set in order to restore it, but the "Point in time restore " was disabled and I couldn't select it to set the time to which to restore.Could anyone tell me the reason behing that?
Another interesting thing is that when I backup a database, I only have two options for backing it up,
1. database complete
2. database differential
Thanks a lot,
Joe
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Nov 28, 2007
I have full Recovery mode.
I just accidently deleted a handful of records out of a table about 10 minutes ago. My last backup was last night.
Can I go back 10 minutes ago for a specific table? If so how... DO I need to backup now, then use the trans-logs to recover up to a specific point?
Thanks!!
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Mar 16, 2008
hi all!
can you help me, in which case will i need to Specify a Point in Time, when restoring a database?
for newbee like me, it looks like it's better to restore without Specifying a Point in Time, because i will restore my data, without headache.
can you give me some sort of example when and why to specifying a point in time?
thank you 1000x in advance!
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Jul 20, 2005
In the hereunder written message I talk about point in time restore.It is now based upon the fact that there are no hardware problems or what soever.I just would like to roll back to a situation of some time (minutes, hoursor what ever) ago.Used to the ingres database a point in time restore can take place UP toany, any, any time since the last FULL backup. (any time up to now !!!)I can't understand why a point in time restore can only be done based upontransaction log backups. The current transaction log is also available in myopinion. (Turn off the power, turn on the power and you will notice that theautomatic recovery is based upon this transaction log file; so in that casethis file is used)That's what my question is about. Is it correct that a point in time restorein a SQL server environment can only be done up to the last transaction logbackup.ByeArno de Jong,The Netherlands.
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Jul 20, 2005
I will make it simpler to look...I have DB1 - as backup for day 1LOg1 as backup of logsT1 T2 T3 T4 T5 ...some transaction on day 2Now i backup againDB2Log2I want to restore the database till the point of transaction T3 say. Iknow the time or i assume a certain time.Is this possible .....i tried several options but hand in between forsome reason or the other. How can i achieve my solution. Is there someextra parameter i will require or what....i am wondering now that it isnot at all possible. Please help.RVGIf possible guys can you please mail me the sloution onJoin Bytes!*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
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Aug 11, 1999
How could i restore a filegroup to a certain point of time (not to apply all
transaction log up to the latest one) ??
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Jun 6, 2014
Our backup system has worked ok for us to date. We can restore back to either full saves or up to a certain log (we take log backups on the hour). We've never had to, but wanted to test restoring to a point-in-time with the backup data.
What the system does is generates .mdf and .ldf files, which is essentially a full backup say in the middle of the night. It then creates .bak files for the log backups based on the backup set you want to restore.
I can detach the database and apply the .mdf and .ldf and re-attach the database, but to apply the .bak files I need to get the database into a (recovering) state. I can't seem to do that. Otherwise when I try to apply the .bak files the system says: The log or differential backup cannot be restored because no files are ready to rollforward.
How to apply a .mdf and then apply the .bak files?
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Sep 1, 2015
Can I use a full and differential backup to restore to a point of time?
Or I have to use full and transaction log backups in order to do a point of time restore?
I found today when I tried to restore a db from another database at the point of time for example 3:10 pm,
SSMS automatically select the full backup + the transaction backup that is done at 3:00 pm, but not select full + the differential backup I did at 3:12pm.
So I lost those records entered after 3:00pm.
I supposed it should use the differential backup and restore to 3:10. but it didn't.
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Aug 10, 2000
Hi Everybody:
We plan to do point-in-time recovery for certain databases. We plan to do Complete Database Backup every night and transaction log backup every two hours from 8:00 AM to 5:00 PM. I have following questions regarding the log backup.
1. There are two type of backup 'Append to media' or 'Overwrite'. If I choose 'Append' for log backup, is that mean I only need to restore database against last log backup file because all previous log backups have been accumulated there?
2. Can I automatically truncate log after the backup is done? How I can do it?
Thank you very much.
Joan
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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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Sep 21, 2006
Hello,I am using SQL Server 2000 with SP4. I have a database with two fullbackups at 4:00 PM and 5:00 PM and a transactional log backup at 5:30PM. Is there a possible way to do a point in time restore to 4:30 PM,that is between two full backups?When I try to use the transactional log backup that is taken at 5:30, Ican never specify a time before 5:00 PM. Is the transaction logtruncated at each full backup? If so, even if you take transactionallog backup every ten minutes, and full backups every once in a while,there will be some point in time which cannot be recovered to, namelythe time between a transactional log backup and a full backup. Take alog backup at 4:50, and full backup at 5:00 and you can never recoverto 4:55, can you?Any insight on the topic will be appreciated,Regards,M. Baris Caglar
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Jul 20, 2005
We're considering purchasing an application,which stores some data in the filesystem, andsome data (meta data and links to files) inMS-SQL.We need to be able to create a backup whereinthe database and files are "in synch" (in other words,in a consistent state). We need to maintain the"referential integrity" between database and files.What I'm thinking of is something like this:1. stop the application server2. set database to readonly (flush updatesfrom cache to disk)3. backup database to disk files4. back up application files and backup files.(We could use "snapshot" capabilities of our diskhardware, so that the backup could run against thesnapshot; that would minimize downtime.)4. set database to read_write; restart app serverRecovery scenario would be:1. Stop application server.2. restore application files and database backup files3. restore database from disk backup4. restart application serverIs there a simpler way to get a "point in time" backupof application files and the database?
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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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Mar 10, 2008
I have this database "DB1" which is in FULL recovery mode.
I run full daily backup -Monday to Saturday
DB1_Mon.bak
DB1_Tue.bak
DB1_Wed.bak
DB1_Thur.bak
DB1_Fri.bak
DB1_Sat.bak
Come Sunday - for the first time I have run transaction log backup.
DB1_Sun.trn
And now, I need to restore DB1 - but the only full backup that I have is the Monday - "DB1_Mon.bak"
Is my database complete if I restore only "DB1_Mon.bak" plus the "DB1_Sun.trn"?
Jeboy
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Sep 13, 2006
I am running the following script to attempt a restore of a differential backup:
RESTORE DATABASE AdventureWorks
FROM DISK='C:SQL2005_BackupsAutoBackupsAdventureWorks.bak'
WITH
NORECOVERY
GO
RESTORE DATABASE AdventureWorks
FROM DISK='C:SQL2005_BackupsAutoBackupsAdventureWorksDiff.bak'
WITH RECOVERY
GO
I thought this was the way to do it. It does restore the full backup, but on the attempt to restore the differential backup, I get the following error:
Msg 3136, Level 16, State 1, Line 1
This differential backup cannot be restored because the database has not been restored to the correct earlier state.
Msg 3013, Level 16, State 1, Line 1
RESTORE DATABASE is terminating abnormally.
Does anyone know what this means? Do I have to use "with recovery" on the first restore? (The sample I took this from used "with norecovery")
The original backups were done with SQL Agent scheduled jobs. The script for the full backup is:
BACKUP DATABASE AdventureWorks
TO DISK='C:SQL2005_BackupsAutoBackupsAdventureWorks.bak'
The script for the differential backup is:
BACKUP DATABASE AdventureWorks
TO DISK='C:SQL2005_BackupsAutoBackupsAdventureWorksDiff.bak'
WITH DIFFERENTIAL, INIT
All I can say is, it's a good thing I am testing this out with non-critical data, because I obviously don't know what I am doing. (Sorry, I'm primarily a programmer, not a DBA) Can anyone help?
Thanks
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Jun 17, 1999
I do hourly transaction log backups at 9,10, 11 etc...
When I restore from a 9:00 backup I clearly see changes that I made after 9:00 am!!!
I then noticed when I go to my scheduled backups that a 10 am backup was indeed done
but in the "restore from device" tab it says the last backup was at 9 am.
Apparently it is not showing the actual latest backup that was done. This explains why
when restoring from a 9am backup I am seeing changes after 9, because in reality
I am restoring from a 10 am backup!
Is this a bug? I am running on 6.5 sp 5a.
thanks in advance....Mary
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Nov 23, 2015
SQL Server 2008 R2
I don't see a "general discussion" thread and this is the closest i think.
I just have a general question: if my backup window is from 8am to 10am, and i do a restore within that backup window, what will happen? assuming we're talking only of a single database, ACME.
I'm comparing because with Oracle RMAN, it pukes when i do a restore while the backup is going on. it would complain of unable to find some archive logs.
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Apr 4, 2015
I am working towards automating the process of testing our backups. For the meantime, I do it all manually - I copy the backup files (full + transaction logs) to our test server and then run the restore script. Once database restored I run the DBCC CheckDB. The results of checkdb I manually upload to our Sharepoint portal as proof that the backup file is intact with no errors.
here are some ideas I have but have not yet tested:
Create a maintenance plan with each 3 jobs:
--> Powershell script to copy the files from Prod server to Test server - add this scrip to Job1
--> Powershell script to restore databases files - add this script to Job2
--> Run the DBCC in powershell (yet to find if possible in PS) - add this script to Job3
I would like to use seperate jobs as to get a report on the duration and status of each job
Would also like to get the results of the DBCC Checkdb as proof that no errors were found for upload to our Sharepoint portal. Dont know if possible via the job.
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