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 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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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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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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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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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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Hi All,
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Regards,
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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,

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Hi ,

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

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Regards,
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Will appreciate your help here."

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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.
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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?

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Thanks

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Code Snippet
Msg 5123, Level 16, State 1, Line 3
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Hi all. A few days ago i installed mcafee total protection 2007 and that disabled my internet connection totally!! I couldn't fix it so i had to uninstall it. After uninstalling mcafee total protection 2007 still i couldn't join Internet!!

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