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Recover A Corrupted LDF File

Jul 20, 2005

Recently, one of our database's mdf and ldf was corrupted. We were able tobring back the database with the capability of importing and querying thedata. However, the data is not the full list. Some of the data are stillmissing because the tables we want still has sone 'chain mis linkage' errorwhen we did a DBCC checkdb/checktable. DBCC couldn't fix those errorseither. We're pretty sure that there are some data still burry under thecorruption. Then we thought of the life LDF file. This file should haverecorded every transaction up to the point of failure. So we trying torecover that file, but there are 2 problems. First is we don't have back upof that file and 2nd, that file is also corrupted. I couldn't backup thecorrupted ldf file at its current state. It's giving me some unrelated errormessage like disk space is out. All I know now is the only hope to recoverthose missing data are in this LDF file. We tried to use this software fromLimingent Log Explorer to recover it. So far no such luck with that. SoI'm asking anyone who has similar experience or problem. Please let me know.I need to know anyway to recover this LDF file, either by using sql server'snative tools or 3rd party tools. Any input is helpfull. thanks in advance.Wei

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Recover Database File

Aug 24, 2006

hi all,

i have SQL 2000 server with SP3, yesterday my database was suddenly goes to suspect mode. then i found log in sql server log. and it shows following text:



I/O error (bad page ID) detected during read at offset 0x00000000030000 in file 'C:Program FilesMicrosoft SQL ServerMSSQLDataMFS_Data.MDF'..



kindly, do needful for recover data from this file...



Tejas Kishanwala

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How To Recover Database From LDF File

Oct 21, 2015

I am working on SQL Server 2008 R2 and unfortunately I have lost my .mdf file after detaching it from my database, but the .ldf is still in my system. Is there a way to recover my database from .ldf file?

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Recover Data From .mdf And .ldf File?

Jun 15, 2006

Hello!

Hopefully someone can help me with the following (potentially huge) problem:

We've got a simple database application running on microsoft sql desktop engine. This database contains two tables. Up until now all worked fine, but probably due to a programma that crashed part of the database seems to be corrupted or broken while today only one table contains/returns data and the other table does not return any values!

When I open the .ldf and .mdf files in notepad I see that there is data belonging to both the tables. But how do I recover it??

The max. size of the database has not been reached by far (it's only 9Mbs), the sql queries are correct.

This .ldf file is a log file (?) I can't find detailed info about the principles of these .ldf and .mdf files on the internet, is it possible to trace back what has happened en recover the database that way?



Thanks in advance.

Greetings,

Rens Voogd

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How To Recover Data From A Corrupt Mdf File

Aug 3, 2002

Hi All,
By mistake i delete database from sql server. Due to which the the mdf and ldf file of the datbase are removed from my system. Then i used file recover utility and retrived my mdf and ldf files.But now i am not able to attach those files into databse. These mdf and ldf files has been corrupted. Now how can i recover my data from those mdf and ldf files.Please answer me if you have any solution on this problem.


Regards,
Satish Rotella

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SQL 2012 :: Recover Database Without Log File?

Jul 10, 2015

Recently i got task from Senior DBA, as : Recover a database without LOG file Currently Data File is available.

Log file is also available, but shows size as 0 KB. Means Log file is corrupted.

Currently existing DB is shown as Offline Mode in SSMS.

So i got below link:

[URL]

When i tried 1st/2nd solution from above link, i got below message:The log cannot be rebuilt because there were open transactions/users when the database was shutdown, no checkpoint occurred to the database, or the database was read-only. This error could occur if the transaction log file was manually deleted or lost due to a hardware or environment failure.

To try that 3rd solution, I had to DELETE/Remove existing DB from SSMS, so i can create New DB with same name.

When i tried to delete Log file from Command Prompt, using below command, Windows replied that File is corrupted, so it cannot be deleted.

DEL /F /Q /A C:Program FilesMicrosoft SQL ServerMSSQL11.SQLEXPRESS2012MSSQLDATAMyDB.ldf

Meanwhile my Senior DBA brought DB in Recovery Pending mode.

So if i want to go for 3rd solution,then i need to DELETE file, But Windows is not allowing me.

[URL]

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MS-SQL One .NDF File Missing How To Recover/Rebuild DB??

Jul 6, 2006

Dear All,SOS Please Help.I have a MS-SQL DB with 4 .ndf files. One (first) .ndf file is missing.somehow got deleted??. Is there any way can rebuild my DB.The .MDF and .LDF files are in tact.Please help asap.Dhumbak*** Sent via Developersdex http://www.developersdex.com ***

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How To Recover From Mdf File (SQL Server 2000)

Dec 22, 2006

Hi,

My database corrupted because when I was running an update query, there is a power failure. After the computer booted, I cannot open the database anymore, it just not responding. Then I stop the sql server service, and tried to rename the .mdf and .ldf. After that it worked normally, but I need the data from the corrupted mdf file, I tried to attach the database but it just hanged. I even tried to attach without the .ldf file but it didn't work either, so I concluded that the problem is with the mdf file.

Is there any way to recover my data ??

Thanks in advance

Regards,

Edwin

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How To Recover Committed Transactions From SQL Server Log(.ldf) File?

Dec 23, 2003

Hi ,

I got problem in production server at client place(No backup copy & not replicated,it's a SQL SERVER 2000 Enterprise server),by mistake client updated the data without using where condition then updated lakhs of rows (in SQL server autocommited),Now I need to recover this data from LOG file(.ldf).I tried with LOG EXPLORER(Third party tool) Trail version recovered from default database(Northwind,Pubs).But client not willing purchase this S/W for simple cause,How can we recover the data from LOG file.

1.Can we write the Program in C# to read the SQL Server Log and show the past transactions?
2.Is There any Stored procedures exist in SQL Server to read the day transactions in log file and take the backup?
3. How to read Transactions Log file in SQL Server 2000?

It's very Urgent,I am not expert in SQL Server 2000.

Could U Please Help me with possible solutions.

Regards,
Harikrishna.

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Restore / Recover SQL Database From Data File

Feb 24, 2002

Our SQL database log file got physically deleted. Now the database is in suspect mode. Is it possible to recover / restore the database just with the data file.

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SQL 2012 :: How To Recover Corrupted Database File (MDF / IDF)

Nov 28, 2014

I run MSDE on a Windows XP Server and my database was marked as "suspect" by Enterprise Manager and its icon become gray. I detach that database and try to re-attach it but there is an error as the following:

Error 3624:
Location : page.cpp:2801
Expression: rowLength >= offset + deleteLenght
SPID : 56
Precess ID:1612

After that, I uninstall the MSDE and re-install new MSDE SP4 and try to re-attach the database file again and there is still an error. Is there anyway i can recover the data from that database?

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SQL Server 2014 :: Recover Database Value Through LDF File

Jun 3, 2015

SQL server. By-mistake I updated values of a column in a database hosted online, is there any way undo the transaction. I didn't created any backup of the database. I read that still it can be recoverd through the .ldf (log file) but unable to access it. Is there anyway to get access of the Log file or is there any way to recover the data.

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Recover With MDF File Only Due To Hard Disk Failure

Nov 10, 2006

catcat writes "Hi All,

Our MSSQL 2000 server crashed yesterday and one database cannot be restored. the latest backup we have is june. We can only recover the MDF file from the harddisk and according to our admin, it cannot be restored anymore because no proper shutdown was made.

Will appreciate your help here."

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Recover Master Database Fron Only MDF File

Jul 20, 2005

I have SQL server 2000 which recently crashed. I try to recover it andfound out that the Master database is corrupt. I never backup myserver using inline sql backup nor any third party backup program thataware to SQL server. But I have full system backup of volume c on tape(using NTBackup), which includes old version of Master database. Myquestions are:1. How can I recover this file into SQL server?2. If so, it is not risky to recover Master database from two weeksago?Thanks in advance!

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LS - Recover A Standby Database - Deleted Standby File (.tuf File)

Nov 19, 2007



Hi,

The standby file (.tuf file) got deleted accidentally on the secondary. How can I recover the database without the standby file?

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SMO Recover DB

Feb 2, 2007

Is there a way to recover the database without defining a device to restore from?

Restore Database TestDB With Recovery

MTmace

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Recover From T-Log

Feb 1, 2008



Hi,

By mistake i've damaged my .mdf file and i have no backup on this database . However i have the transaction log intact and an older version of the database .

Is it possible to recover the database using the transaction log? How can it be done?

I do not have the transaction log backup, just the .ldf file.



Thanks to anyone who can help me.

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Recover Database

Feb 27, 2000

How do I begin? I had previously installed the SQL Server 7.0 with NT Authentication and everything was fine until I Rename domain Name and Computer name. I decided to uninstall SQL Server, and then reinstall it.
From this action unable to see my database in enterprise manager. I Rename old domain and computer name again. and reinstall with Upgrade Version. but still same effect. Can anyone help? What do I need to do to get my database to work again? Any input on this will be appreciated. Thanks in advance.

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How To Recover A Database?

Aug 25, 2004

I had MS SQL installed on my comp.I had to reformat my hard drive due to some problems.There was a db in the sql server which i needed.So i saved the .mdf & .sdf files.Then i installed sql server in the formatted hard drive & pasted the .mdf & .ldf files in the Data forlder in MSSQL folder.But the problem is that even after doing this the enterprise manager doesnt show that database.Can anyone help me with this?Is there any way to recover the database?
Thanks a lot

P.S.- I also have whole of the earlier MSSQL folder present in the earlier program files backed up.Would that help in anyway.

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Recover The DTS Packages

Aug 5, 2004

Hello, everyone:

A guy think that the DTS packages can be recoved by restore MSDB database. Is that true? Does anyone have experience on that? Thanks.

ZYT

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Recover Database

Nov 23, 2004

Hi

I've had a powerfailure, that resulted in I had to scratch my DB server, I've managed to get all the .mdf and .ldf files from the server. On the new server I get a "Error 823: I/O error (torn page)" when I'm trying to attach the .mdf file to the New server.
Both the new and the old server is a win2003 with SQL 2000 SP3

Is there anybody who knows how I can recover the DB?

/Rune

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Recover Database Help!

Oct 6, 2005

Hello,

Is it possible to restore a SQL 2000 database with data from a transaction log?

I am not sure what happened to my database, all the data in the tables is gone. I generated a db script to create a duplicate database. I saved the .sql file on my local machine, separate from the db server, renamed the database name in the .sql file to a new database. Tested script in query analyzer for syntax, all was fine. Running it at this point would have created a new database with a different name, right?

Now my original database is empty. Can someone please provide me with information on getting my data back. Is there a way of using the transaction log to recover the data.

Thanks

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Log Shipping Recover

Jan 30, 2004

I have changed the roles of primary and secondary servers due to server failure.

Can anyone advise how to revert back to previous main server? Are these any links available?

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Recover DB From Its MDF And Ldf Files (HELP)

May 3, 2004

Hi
I need help to recover database from its MDF & ldf files as my server crahsed today .

BTW i installed afresh copy of MS SQL 7.0


I need to be able to restore the database. Pls reply if
you can help. It would be greatly appreciated.

:( :confused:

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Way To Recover A Database?

May 9, 2011

is there any way to recover a database? I accidently drop my database .I don't have any backup.

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How To Recover From A Corruption

Aug 5, 2005

Paul,

Having read your useful insight into the sorts of issues around the corruptions that folk have posted in this forum I'm interested in preparing for the day when one of our servers gets corrupted :-(

Should I expect to be able to:

Restore FULL backup from Before the corruption first happened
Restore all Tranaction log backups since

and would get me back to ground zero?

I'm thinking:

if I do a DBCC CHECKDB once a week, say, immediately after a FULL backup - then if that gives me some error messages I've got last weeks Full backup and a weeks worth of Trans Log Backups to restore - which is OK for a rare disaster.

I apprecaite that the thing that caused the corruption might be a memory or disk fault, which might also have broken the creation of the backup files too - in which case I'm fairly stuffed!

Does a RESTORE do a checksum of somesort that would detect a corruption caused by, say, a memory fault or a disk controller that wrote the block faultily [twiddled some bits, but did not report error]?

In which case continuous restores of backup files to A.N.Other server would discover the moment at which a backup was "known bad"

Am I close?

Thanks

Kristen

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How To Recover Pubs?

Feb 2, 2006

I am using sql server7.0
I want to know how to recover pubs and northwind data bases in case they are deleted.


Gajanan Kulkarni

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How To Recover The Data

Jun 22, 2006

raju writes "while attaching the mdf file we are getting the following error
error 823
i/o error (bad page id) detected during read at offset
0x0000001404000 in file d:filename"

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Distaster Recover

Mar 9, 2007

OS: Windows 2003 Standard Edition
MS SQL: Standard Server 2005

I am looking to implement a disaster recovery plan for an MS SQL 2005 server, this is what I have done so far but would like the benefit of your experience to provide feedback and help improve the strategy.

MS SQL Server:
I have two maintenance plans, one to backup the system databases to individual backup files (.bak) and one to backup all the user databases to a backup device (mssql_backup) The backup files & device are in a directory (backup) and is backed up using NFS. I keep a copy of the backups on a USB HD which is stored offsite.

Disaster:
Office burnt down

Recovery:
New server, install OS/MSSQL, patch up to same version as burnt server.

Copy .bak files to new server, copy mssql_backup file to same location as previously held i.e. X:ackupmssql_backup

Start MS SQL in single user mode, restore master database using .bak.

Start MS SQL in normal mode, restore other system databases using .bak

Restore user databases using mssql_backup device

Testing:

Using the above steps I was able to restore up to the point of "user databases" Getting to this point I realised that there are a number of databases to restore, in my novice ways this seems to be a lot of right-clicking and restoring.

1) is there a command that would in effect be able to restore all databases using the backup device?

2) do I have a working version of the databases to the point of the last backup? Or am I missing something?

3) in my current setup in mind (SQL backup to NFS directory and picked up my backup software) is there a 'better' way I could be doing this which would make the restoration procedure more efficient

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Recover Datbase

Mar 28, 2007

how can i recover sqlserver 6.5 datbase from tape.

pls help me?

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Recover Database Password

Jul 23, 2007

Hi all,
Is it possible to recover or find the password of database or resetting is the only option? I have a database that has a two users in the Users tab. How to find out the password for these?
Thanks, 

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Recover Sql Server Database

Feb 1, 2008

Hi,
By mistake i've damaged my .mdf file and i have no backup on this database .  However i have the transaction log intact and an older version of the database .
Is it possible to recover the database using the transaction log? How can it be done?
 Thanks to anyone who can help me.

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