I'm trying to restore a database from 32MB backup. I have 6GB available on my disk. When I'm trying to restore the backup it shows the insufficient disk space error. How is it possible that a 32MB backup requires more than 6GB of disk space?
Probably because the backup is compressed, or because there is a very large log file that doesn't need to be part of the backup itself, or because the data file itself has been cleaned out - the backup is only comprised of pages that contain data. But when restored, it still has to expand the data file to its original size, even if most of it is empty.
Show us what the size column says when you run:
RESTORE FILELISTONLY FROM DISK = '[path]\whatever.bak';
I had the same issue, I had a 800 MB database backup file which needed 320 GB free space to be restored in destination computer.
Turned out it was just because of database log file, to make sure log file is what caused the matter, right click on intended databse and click on properties, after that in General tab check Size of the database, if it's huge, go to the Files tab and navigate to the path of tfiles.
I ran Shrink command on database and on files through interface but it didn't help, following query saved me eventually:
ALTER DATABASE DataBase_Name SET RECOVERY SIMPLE;
GO
DBCC SHRINKFILE(DataBase_Name_log, 200);
GO
ALTER DATABASE DataBase_Name SET RECOVERY FULL;
GO
It means you have to run query on the database, then create a back file once again.
NB: As you see in the query above, Database recovery mode should be on Simple before SHRINKFILE be executed.
It's always good to double-check which disk you're restoring the mdf and the ldf to, maybe you're creating the files in a full disk, it could happen.
Other than that, I'd suggest restoring that backup in another place, have the files SHRINKed, and backing up it again for a desperate measure.
The other answers explain the reason for the error message but do not provide a solution to the problem. I had the same problem and this is the solution I found.
Plug in an external hard drive with a massive amount of space available, then move the .mdf and .ldf files to the external hard drive. This script can be used to move the files while restoring:
RESTORE DATABASE [MyDb] FROM DISK = N'C:\Data\Backup\MyDb_FULL.bak' WITH FILE = 1, MOVE N'MyDb' TO N'E:\Data\MyDb.mdf', MOVE N'MyDb_log' TO N'E:\Data\MyDb_log.ldf', NOUNLOAD, REPLACE, STATS = 5
Once the database restores successfully to the external drive, you have the option of shrinking the files and then moving them to your hard drive or wherever else you want them to be.
Related
I'm trying to take a copy of a database into another server. I usually been making backup, copy the backup file to another server and restore it. But the backup is 90GB, and the space left after copying the backup to the destination folder is only 26GB. As you probably understand by now I'm not able to restore the database as it doesn't have enough space. So my question is is possible to restore database by replacing backup file? Any other suggestions? Increasing the disc space is not an option as this is just a testing server and the space will be enough after restoring. Thank you
Depending on your SQL Server version have you tried enabling compressing during backup. You would be surprised by how small the backup file can get after compression. Also if your database is set to SIMPLE recovery you could look to reduce the log file size before you backup.
You can find some steps on how to enable compression during backup here
https://sqlbak.com/blog/how-to-configure-backup-compression/
I'm trying to run a restore query from a bak file stored in S3 bucket to an RDS SQL Server Web edition, and kept getting this error:
[2017-09-13 20:30:22.227] Aborted the task because of a task failure or a concurrent RESTORE_DB request. [2017-09-13 20:30:22.287] There is not enough space on the disk to perform restore database operaton.
The bak file is 77 GB and the DB has 2TB, how come this is still not enough?
This is the query from AWS docs:
exec msdb.dbo.rds_restore_database
#restore_db_name='database_name',
#s3_arn_to_restore_from='arn:aws:s3:::bucket_name/file_name_and_extension';
Source: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/SQLServer.Procedural.Importing.html#SQLServer.Procedural.Importing.Native.Using
There is not enough space on the disk to perform restore database
operaton.
...
The bak file is 77 GB and the DB has 2TB, how come this is still not
enough?
You need 2Tb of space to be able to restore this backup.
The fact is that restore operation will reconstruct your original database that is 2Tb.
Backup is backing up only data, not empty space. If your backup is only 77Gb and is not compressed this means that your original database has only 77Gb of data (or even less, because backup contains a certain amout of log as well).
Any database consists of data file(s) and log file(s), and if your db is about 2Tb with only 77Gb of data, it means it has enormous log file. I think it's in full recovery model and someone does not take regular log backups (or even did not take any log backup at all!!)
So you should take a look at your original db, change recovery model to simple if you don't need point in time recovery and take no log backups, or, if you really need full recovery model, you should backup log more frequently.
Taking regular log backups or changing recovery model to simple will permit you to shrink the log to reasonable size, from that moment you will not need 2Gb of space to restore it anymore
I need the best shortest possible way to handle SQL Server transaction log files as my disk will be having a problem in saving them, in future. I don't know how to tackle this Low Disk Space issue, as my drive's free space is already in MB's.
Now, I don't know that whether the logs will be lost or affected if I move them to some other drive or will it effect the transactions or how to save the future logs depending on some previous transactions, if the disk space is completely full. Someone please help!!
Lets first take something off the table: do not delete or move any database mdf or ldf file. You'll end up corrupting and loosing the database.
You need to investigate why is the log growing. Go read Factors That Can Delay Log Truncation. Follow the steps in the article to identify why is the log growing.
If the reasons is anything else but 'LOG_BACKUP', post an update with the reason you discovered and we can take give further advise.
If the reason is LOG_BACKUP then we can proceed. You have a database in non-SIMPLE recovery mode which is not being backed up correctly. You need to answer a question: Why is the database not in SIMPLE recovery mode? This is a business decision question so we cannot possibly know the answer.
If you don't know the answer to above or if you realize that SIMPLE recovery mode is acceptable, then we can do the quick fix. Change the recovery model to SIMPLE then run DBCC SHRINKFILE to shrink the log.
If you need a non-SIMPLE recovery model then you need to set up a proper log backup plan and start taking log backups. Read Transaction Log Backups and Use the Maintenance Plan Wizard. See See How to shrink the SQL Server Log to understand why you need to take repeated log backups until the SHRINKFILE is effective, due to the circular nature of the log.
First, you should read the excellent answer written by Remus Rusanu.
At the beginning, he wrote:
Lets first take something off the table: do not delete or move any database mdf or ldf file. You'll end up corrupting and loosing the database.
To clarify: It is possible to move the log file to another drive in order to free space on the current drive.
It's just that you can't/shouldn't just move the file in Windows Explorer while the database is in use by SQL Server.
Disclaimer: You probably won't need to do this if you follow the steps in Remus' answer.
But it's possible that you still may want to move the log file to a different drive.
Either for performance reasons (SQL Server ist faster if database and log file are on two different physical drives, because there are lots of writes to the log file), or if you still have a disk space problem (even if you shrink the log file or back it up regularly, some day the database size will grow so that the drive is too small to hold both files).
To move the log file (or the database file) to another location, you need to:
detach the database from SQL Server
move the file(s)
re-attach the database and specify the new file location(s)
Here are two tutorials with screenshots how to do this:
Move SQL Server transaction log files to a different location via TSQL and SSMS
Move SQL Server transaction log to another disk
Given a SQL Server 2008 .bak file, is there a way to restore the data file only from the .bak file, without the transaction log?
The reason I'm asking is that the transaction log file size of this database is huge - exceeding the disc space I have readily available.
I have no interest in the transaction log, and no interest in any uncompleted transactions. Normally I would simply shrink the log to zero, once I've restored the database. But that doesn't help when I have insufficient disc space to create the log in the first place.
What I need is a way to tell SQL Server to restore only the data from the .bak file, not the transaction log. Is there any way to do that?
Note that I have no control over the generation of the .bak file - it's from an external source. Shrinking the transaction log before generating the .bak file is not an option.
The transaction log is an integral part of the backup. You can't tell SQL Server to ignore the transaction log, because there is no way to let's say restore and shrink the transaction log file at the same time. However, you can take a look at DBA post to hack the process, although it is not recommended at all
Alternatively you could try some third party tools for restoring, particularly virtual restoring process that can save a lot of space and time. Check out ApexSQL Restore, RedGate Virtual Restore, Idera Virtual Database.
Disclaimer: I work for ApexSQL as support engineer
No, the transaction log is required.
Option 1:
An option may be to restore it to a machine that you DO have enough space on. Then on the restored copy change the logging to either bulk logged or simple, shrink the logs, do another backup operation on this new copy and then use that to restore to the target machine with the now much smaller transaction log.
Option 2:
Alternatively, perhaps the contact at the external source could shrink the transaction log before sending it to you (this may not work if the log is large due to a lot of big transactions).
Docs on the command to shrink the log file are available here.
This is really a question for the ServerFault or DBA sites, but the short answer is no, you can only restore the full .bak file (leaving aside 'exotic' scenarios such as filegroup or piecemeal restores). You don't say what "huge" means, but disk space is cheap; if adding more really isn't an option then you need to find an alternative way of getting the data from your external source.
This may not work since you have no control over the generation of the .bak file, but if you could convince your source to detach the database and then send you a copy of the .mdf file directly, you could then attach the .mdf and your server would automatically create a new empty transaction log file.
See sp_detach_db and sp_attach_db (or CREATE DATABASE database_name FOR ATTACH depending on your sql server version).
I know this is an old thread now, but i stumbled across it while I was having transactional log corruption issues, here is how I got around it without any data loss (I did have down time though!)
Here is what I did:--
Stop the sql server instance service
make a copy of the affected database .mdf file and .ldf file (if you have an .ndf file, copy that as well!) - Just to be sure, you can always put these back if it doesn't work for you.
restart the service.
Log into sql management studio and change the database mode to simple, then take a full backup.
Change the database type back again and once again take a full backup, then take a transactional log backup.
Detach the database.
Right click on databases and click on restore, select the database name from the drop down list, select the later full database backup created (not the one taken from the simple mode) and also select the transactional log backup.
Click restore and it should put it all back without any corruption in the log files.
This worked for me with no errors and my backups all worked correctly afterwards and there were no more transactional log errors.
My sql database .mdf file is 130mb and .ldf file is 1300mb. I want to reduce my .ldf file size.
How can I do it and is there any problem occur after deleted data.
Thanks in advance
To start with, do a full backup, a log backup, and then set up scheduled log backups if you haven't done so already. After a few log backups you can shrink the log file and hopefully it won't grow that large again (unless you do some really unusual updates that touch a lot of data over and over again).
See http://msdn.microsoft.com/en-us/library/ms189275.aspx for more info on the different SQL Server recovery modes and backup requirements.