Recovery From A Damaged Mdf File
Sep 22, 2005
Hi,
Server drives become faulty and after the recovery of the server the SQL server installation was gone from the system drive. Residing on a different drive, the mdf and ldf files of a database were saved. Unfortunately, when trying to attach the files to a new SQL server installation there is a message 'I/O error (torn page) detected during read at offset 0000000000000000 in file E:SQLServer2KMSSQLDatadb.mdf'.
The available backup files are not restorable returning 'An internal consistency error' upon restoring. So, the hope is with the mdf and ldf files. Does anyone have any idea what can be done specifically with the mdf/ldf files? Any recovery software to be recommended?
Thanks!
AV
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Sep 22, 2005
Hi,
Server drives become faulty and after the recovery of the server the SQL server installation was gone from the system drive. Residing on a different drive, the mdf and ldf files of a database were saved. Unfortunately, when trying to attach the files to a new SQL server installation there is a message 'I/O error (torn page) detected during read at offset 0000000000000000 in file E:SQLServer2KMSSQLDatadb.mdf'.
The available backup files are not restorable returning 'An internal consistency error' upon restoring. So, the hope is with the mdf and ldf files. Does anyone have any idea what can be done specifically with the mdf/ldf files? Any recovery software to be recommended?
Thanks!
AV
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May 31, 2001
we have query
SELECT SUM(T.AmountInput) as AmountTotal
FROM otrnTransaction T
WHERE
IsAutomaticPosting =0
AND (IsCashierAudited = 1 AND IsNightAuditorAudited = 0)
it was ruuning well until yesterday .
Today it just imposible to get result from it.
I run CHECKDB
DBCC results for 'otrnTransaction'.
There are 20067 rows in 384 pages for object 'otrnTransaction'.
...
CHECKDB found 0 allocation errors and 0 consistency errors in database 'BdHydro'
after running DBCC DBREINDEX (otrnTransaction)
the query start working well
What could cause damage to index ?
Thank you
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Oct 17, 2005
Hi,
Please note that I'm having the below problem:
1- when i run "DBcc CheckDB ('DBName') with all_errormsgs"
I Get:
Could not read and latch page (1:173) with latch type SH. sysindexes failed.
2- then :
select * from sysindexes
Gave me:
I/O error (torn page) detected during read at offset 0x0000000015a000 in file 'C:DataDatabasesOld_Data.MDF'.
Connection Broken
3- dbcc checktable ('sysindexes')
Could not read and latch page (1:173) with latch type SH. sysindexes failed.
Server: Msg 8939, Level 16, State 1, Line 1
Table error: Object ID 2, index ID 0, page (1:173). Test (IS_ON (BUF_IOERR, bp->bstat) && bp->berrcode) failed. Values are 2057 and -1.CHECKTABLE found 0 allocation errors and 1 consistency errors in table 'sysindexes' (object ID 2).
Forth of all, I can't use a backup because it is old.
Can i copy system tables from old database to the current one that we are using...
I tried to export and import data from this corrupted database but it would give me errors...
Is there anyway that i can adjust this database.
Please Help Urgently....
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Jan 2, 2007
Hi
I recently had a hard disk failure on which was running Win2003 SQL2000 SP4.
This server is a sharepoint backend server, I repaired the disk to the point that it could be mirrored across to a new and then set about looking at the databases. There was a schedule in place to backup all 4 DBs daily, the backup process at no time after verifying the backup had any errors. All but one of the DBs reports this error when I attempt to run DBCC or similar query I/O error (bad page ID) detected during read at offset etc. (error 823) I have restored back to the earliest DBs I have and I still get the same error.
Any ideas on how I can recover as much as possible if not all of the DBs? What is the best way to restore from a transaction log? I have found a few articles on it and they all take a slightly different approach for differnet situations however I'm not entirely sure which applies to me.
All help will be very much appreciated.
Rob
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May 6, 2015
One of my employes deleted a MSSQL Database instead of detach. Now i tried to recover the .mdf and .ldf file but when i trie to attach it it says. "File is not a primary database file"
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Jan 1, 2008
I access remote MSSQL Server2005 (SS2005) databse over internet
through SQL Server Management Studio (SSMS) in order to fine tune
ASP.NET website using remote SS2005 database.
Today I could not launch my SSMS
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2616564&SiteID=1
Is it possible that remote server machine or SS2005 damaged my SSMS.
Can it be due to some incompatibilities, virus (I have Norton Antivirus locally) or something else?
I do not have much experience with using SS2005 over internet.
Can you share with me possible practical stories or theory on it?
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May 30, 2008
The server is not being backed up and a user deleted an important folder, that a process depends on. The folder was too large to fit on the recycle bin and therefore was deleted.
Anyone happen to know a good third party tool that performs data recovery and is RAID compatible?
Thanks,
---
http://www.ssisdude.blogspot.com/
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Feb 20, 2002
I have successfully restored my old MSSQL7.0 database from a computer that crashed - but the database is several months old. I do, however, have the most recent log files (*.ldf) - the actual log file and NOT a backup log file. Is there any way i can update my restored databse with the most recent .ldf files?
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Oct 3, 2007
hi
i was deleted a record from my database, but i want to recover my deleted record via log file, how to do ?
thanks
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Feb 8, 2006
I have a SQL Server (Express) database that I use in a Visual Studio (Visual Basic) 2005 application.
The application is of the Decision Support type, that routine deletes the contents of some of the database tables and then re-populates them with new data. There is no reason for keeping the "old" contents and no reason to restore the old content.
(It does this using "BULK INSERT" statements, as in:
"BULK INSERT SharePrices FROM "C:SharePrice.txt")
Because of all the data replacing, the log file gets huge quickly. I don't need the log file at all.
(I suspect that the logging is also taking up time unncessarily.)
Is there any way I can set the database not to have a log file at all, or to have a small log file?
(I've tried deleting the log file from SQL Server Management SQL Express, but get a message that there has to be a log file.)
When I restrict the log file size, my application returns error messages that the log file is too small, and the application can't do what it needs to do.
I have already made sure that in the database that the recovery mode is set to "Simple" and that "AutoShrink" is set to true.
I've tried manual "Shrinks". These work. However, as soon as the application accesses the database, the log file gets huge again.
I realise I may have to do (unnecessary) backups before/after my bulk insert statements. If so, I'd appreciate some help on how to do this from within a Visual Basic 2005 application. (I'm actually using the Data Access block from the Enterprise Library for my data access.)
I'd really appreciate your help.
Kind regards
Reg Bust
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Apr 10, 2008
I have a warm standby (secondary server) receiving log shipping files.
The database has 5 files all in the primary filegroup. Two of the files need to be moved from one hard drive to another. Whats the best way / process to accomplish the move and re-establish the log shipping recovery status?
Thanks
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May 6, 2015
We are doing restoring in a different data center and keep sending log backups and restore from there.Recently we want to bring a new volume to the sql server and move all databases to the new volume, then the problem comes, I did a test that I cannot simply change the drive letter, i.e. old disk letter x, new disk letter y, then I turn off all sql instances and move all databases(restoring status) to disk y, then get rid off disk x, resign x to disk y, so now new disk has old letter x now. then I continue the restore log against latest log backup, it returns the error.
Msg 3446, Level 16, State 2, Line 4
Primary log file is not available for database 'TestDB' (7:0). The log cannot be backed up.
Msg 3013, Level 16, State 1, Line 4
RESTORE LOG is terminating abnormally.
Is there a way to do this? or SQL Server doesn't support this change.
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Apr 1, 2008
Hello,
Any body helop me in such respect that my log file was corrupt. I have mdf file only. Is there any tool to recover data from mdf file or export data to any other db.
thanks
Mansoor .net developer
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Aug 7, 2015
Log shipping was configured 6 months back. A Transaction log file got corrupted today. How to resolve this?
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Jul 19, 2007
I am having a problem restoring to a new or different database than the backup file being restored was created from. I understand the Move commands, and have figured out how to get this to work by mapping the data and log files from the backup file to the files defined for the restore target database.
The problem is with the full text catalog that is part of the backup.
Here's the T-SQL I'm executing, and the error I receive:
T-SQL:
RESTORE DATABASE New_DB
FROM DISK = 'C:ackupOld_DB.bak'
WITH RECOVERY, REPLACE,
MOVE 'Old_DB' TO 'C:SQLDataNew_DB.mdf',
MOVE 'Old_DB_log' TO 'C:SQLDataNew_DB_log.ldf'
Error:
Msg 1834, Level 16, State 1, Line 1
The file 'C:SQLDataFTDataftKeyWords0007' cannot be overwritten. It is being used by database 'Old_DB'.
Msg 3156, Level 16, State 4, Line 1
File 'sysft_ftKeyWords' cannot be restored to 'C:SQLDataFTDataftKeyWords0007'. Use WITH MOVE to identify a valid location for the file.
Msg 3119, Level 16, State 1, Line 1
Problems were identified while planning for the RESTORE statement. Previous messages provide details.
Msg 3013, Level 16, State 1, Line 1
RESTORE DATABASE is terminating abnormally.
Not sure what to do about this, any help would be greatly appreciated!
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Mar 20, 2008
Hello,
I have a question regarding the backup for the database in Simple Recovery Model.
In this Model, I know we can restore only to the last full backup or can use differential
Backup, if implemented as a part of backup.
But my point of confusion is about the backup of '.ldf' file, should those file should be backed up in the
Maintenance Plan, if yes does it help in reducing the size of Log file?
Do we need the backup of '.ldf' in phase of Restoring?
As I mention my database has Simple Recovery Model, but the size of log file is around 20GB,
Could not understand why as in this Model, normally it automatically truncate the Log file?
Help me to clear my these doubts,
thanks,
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Aug 5, 2015
I was looking to change the file growth setting in our AlwaysOn environment databases.We have a single availability group, one primary and one secondary replica. I learned that when changing the file growth setting on the primary databases (data file), the change flows though to the database on the secondary replica.However after doing the same with the log files, the file growth setting changed on the primary but the change did NOT propagate to the secondary.
Is the solution to apply the change directly to the secondary?here's the T-SQL code I used:
ALTER DATABASE myDB
MODIFY FILE ( NAME = N'myDB_log', FILEGROWTH = 512MB );
GO
SQL Server 2012 (11.0.5532)
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Nov 3, 2015
Have a database that's in "Simple" recovery mode whose .ldf has grown to 270GB. This database is a data warehouse so "full" is not required. I put it in simple mode a month ago and shrunk the log down and now it's filled up the disk.
What steps can I take to mitigate this in future? I've read that this is caused by long running transactions which fill the log for DR purposes. Should I put the database back into full mode and backup/truncate daily.
The auto-growth is set to 128MB which is very low.
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Jul 30, 2015
My understanding is that the log file is not supposed to grow if the database is under simple recovery mode.I am in a situation where the log grows if do any inserts that involve millions of rows.How do i make sure that it does not grow?
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Sep 15, 2015
One of our database is in simple recovery model, and usually generating more than 220 GB log file (.ldf) every week. We are shrinking log file many times to release the space.
But as its not advisable I am looking for any other options. I suggested to change the recovery model to Full and start T-log backup, but client dont want to change recovery model.
Is there any way to manage Log file of Simple recovery model to maintain disk space?
Will full backup truncate log file ?
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May 31, 2015
Is it alright to move the .bak and .trn backups which are automatically created in a File Share Witness when a DB is added to an Availability Group? I did that and there were error IDs 1069 occurring, and the AG was unable to be brought up whenever I run a load intensive batch job ...
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May 10, 2015
I want to truncate my sharepoint config database and WSS_Logging database logs the size of sharepoint_config database is growing at a pace of ~10GB every week. I have scheduled a weekly full backup. Current .ldf file size is 113GB.
I am using SQL server 2012 with Always On High Availability feature. I am not able to set the recovery mode from Full to Simple as it gives me message that mirroring is running on both server.
In my case to reduce the log file what I need to do.
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Apr 23, 2015
Came across this scenario in AlwaysOn Availability Group (two node), file share witness times out and RHS terminate and cause the cluster node to reboot. File share witness is for continuous failover and if the resource is unavailable my expectation was that it should go offline and should not impact Server or Sql Server. But its rebooting the cluster node to rectify the issue.
Configuration
Windows Server 2012 R2 (VMs)
Sql Server 2012 SP2
Errors
A component on the server did not respond in a timely fashion. This caused the cluster resource 'File Share Witness' (resource type 'File Share Witness', DLL 'clusres2.dll') to exceed its time-out threshold. As part of cluster health detection, recovery actions will be taken. The cluster will try to automatically recover by terminating and restarting the Resource Hosting Subsystem (RHS) process that is running this resource. Verify that the underlying infrastructure (such as storage, networking, or services) that are associated with the resource are functioning correctly.
The cluster Resource Hosting Subsystem (RHS) process was terminated and will be restarted. This is typically associated with cluster health detection and recovery of a resource. Refer to the System event log to determine which resource and resource DLL is causing the issue.
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Dec 3, 2014
We have a valid full backup of a database. We know it is valid, we have restored it twice from the network with no problems, but we do not have access to the network location from our sandbox environment.
The .bak file is sizable at about 9GB. The .bak file resides on our internal network, in a SAN drive. No problems there. When we copy the file from there into a sandbox environment to attempt the restore in the sandbox environment it gets corrupted. We've tried three different times and all three different times it gets corrupted. First time we copied the file over to the sandbox the restore went up to 50% and failed. The second time we copied the file again and attempted the restore again it failed at 70%.
The third time it failed at 60%. The error message we get during the restore is "...Read on ... failed: 13(The data is invalid) Msg 3013, Level 16, State 1, Line 1 Restore database is terminating abnormally."
Now some background here. To move the file our network team is doing this: they have this .vmdk file that they mount out in our production environment (which has access to the network location where the .bak file is), copy the file into the drive, then move the .vmdk file into the sandbox environment(which does not have access to the network location), mount the drive in the sandbox environment, and then I have access to the .bak file from within the sandbox environment.
Something in the process of using the .vmdk file to move the .bak file from production into the sandbox is causing the file to get corrupted.
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Nov 6, 2015
I need to copy a just-created bak file to another drive after the backup task has completed. I don't see anything in the job toolbox which works with file system operations like this. But still it must be a common need..There are ways to script this or use third part tools but I am looking for something native to the sql server 2012 SSMS toolset, if possible.
An alternate approach would be to run the backup job again, after the main backup, and change the destination to the alternate location. But I was thinking that another backup job would probably invoke more overhead on the server than a simple file copy operation. If I do end up taking this approach I could also use the cleanup task to toss older bak files in the alt dir.
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Aug 17, 2015
We have a requirement to build SQL environment which will give us local high availability and disaster recovery to second site. We have two sites- Site A & Site B. We are planning to have two nodes at Site A and 2 nodes at Site B. All four nodes will be part of same Windows failover cluster. We will build two SQL Cluster, InstanceA will be clustered between the nodes at Site A Server and InstanceB will be clustered between the nodes at Site B, we will enable Always On Between the InstanceA and InstanceB and will be primary owner where data will be written on InstanceA and will be replicated to InstaceB. URL....Now we want we will have instanceC on the Site B and data will be writen from the application available on Site B, will be replicated to the instance on the Site A as replica.
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Dec 23, 2014
is bulk logged recovery model support point in time recovery
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Sep 17, 2015
Pages on a full recovery model database corrupted, need to ensure data loss is minimal for restore operation am thinking about restoring the latest full backup.
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May 5, 2015
in the process of migrating a big db from server 1 to server 2, we had to roll back the change. I started with taking a full db backup and restoring it on server 2 with norecovery, and then a couple logs with norecovery, and then the last log with recovery.
Is there some way to continue this chain now, I mean to change the db to norecovery, or other way to restore logs.
I dont want to do a new full backup.
If I try to do a log restore now i get the message:
Msg 3117, Level 16, State 4, Line 1
The log or differential backup cannot be restored because no files are ready to rollforward.
Msg 3013, Level 16, State 1, Line 1
RESTORE LOG is terminating abnormally.
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Sep 19, 2015
We have 3 replica AG setup. 2 replicas are in sync/automatic failover, the other(DR Server, different subnet) in asynchronous/manual mode…All these replicas were on sql server 2012, Recently we upgraded DR server to 2014. Since then we have a problem, the AG databases in 2014 instance went into ‘Synchronizing/ in recovery’ state…The SQL server error log has message, the recovery couldn’t start for the database ‘XYZ’…We tried to create a new database and add it to AG , it works for fine for other two 2012 replicas, but on 2014 we see the same issue
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Nov 1, 2015
We have an issue with a 3 node SQL 2012 Always on availability group. Normal operation is node 1 (primary replica) with node 2 and node 3 as secondary replicas.After some patching, SQL wasn't running on node 1 hence the AG flipped over to node 2. This went unnoticed for some time and the transaction log for one of the AG databases became full on node 2 and node 3. (I think this is because it couldn't commit the transactions on node 1 so couldn't truncate it's t-log?) The DB is using synchronous replication btw.So I started SQL on node 1 and flipped the AG back to node 1 (with a data loss warning but I accepted this).Now the issue is that on node 2 and 3, the DB in question is stuck in a "Reverting / In Recovery" State. I've tried various commands such as ALTER DATABASE SET ONLINE, RESTORE DATABASE WITH RECOVERY etc but these fail stating unable to obtain a lock on the DB.
The weird thing is that on node 1 the state of the DB is "synchronised".how to resolve this issue on node 2 and 3? I've left them overnight (in case they were rolling back transactions, the DB is fairly large) but nothing seems to have happened. remove the DB from the AG in node 2 and 3 and add it back in again, ie recreate the replication?
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Sep 10, 2015
If you are doing a disaster recovery of an entire SQL 2005 cluster, can you just install SQL server and restore the system database to get the configuration?
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