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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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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Aug 19, 2005
Hi,
Some of the data files on our database got corrupted. Is there any tool to get just the data out of the data files and dump somewhere. We can manually rebuild the database using the schema scripts and loading the data. Appreciate any help. Any suggestions are welcome too.
Thanks.
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Aug 16, 2006
Matt writes "Greetings! Warning, I'm a rookie. I wrote a stored procedure to pull data in order to do a nightly export/import from one system to another. I have a batch file that looks like this:
bcp "exec WinSNAP_retrieveStudents '0607'" queryout c:WinSNAPData06.txt -c -U user -P password
Sometimes, the file works and I get perfectly formed data, with everything just as I've requested (mostly basic demographic information: names, addresses, etc.).
But, other times the output file contains nothing but garbage characters, like this:
剒乏†††††††††ठ䅍啎䱅†††䴉㐉㐷‰䕓䄠䅐䡃⁅剄
The file size looks right, but it contains nothing but characters like this from beginning to end. I can find no pattern as to why/when good data gets pulled versus the corrupt data. I can run the batch file one minute and get good data, and run it the next minute and it's all corrupt. We have the batch file scheduled late at night when no users are online, and I get the same results -- one day it works, the next it doesn't.
Forgive me if this is a well-documented issue -- my searches so far haven't turned up a thing!
Thanks much for any advice you can provide!!
Matt Smith
DeSoto County School District
Arcadia, FL"
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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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Feb 4, 2008
I have a SSIS package that reads a SQL database and generates a flat file(.csv ) in some other system. This flat file is being read by another software tool to do further processing. The package is scheduled as SSIS job.I deployed in the production around 1 month back and it was working fine. Around 1 week back, there was a job failure for the SSIS package. The error log suggested that the problem is with some buffer management and temp file usage in the system where the csv file is generated. The error was rectified by giving appropriate permissions to the folder and temp area to the user that is running the SSIS job on the sql server. After that, the job has run successfully and the csv file is also generated. The format of the csv file seems to be correct. But however, the third party software tool is not being able to read the file treating it as invalid file.
I have no access to the production environment. Can anyone suggest is to do anything with the SSIS package and how can the issue be resolved?
Any help would be highly appreciable.
Many Thanks
Debanjan
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Feb 25, 2008
I keep having the file is corrupt when extracting. I download it many times from MSDN without luck. I just reimage my system with minimum. Please help.
System:
Windows Vista Ultimate 64-Bit
Visual Studio 2008
SQL Server 2005.
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Oct 20, 2006
Hello,
On my computer, XP SP2, VB 2005 Express and VisualWeb 2005 Express are installed.
SQL 2005 Server express was also automatically installed in the same time.
I want to complete this SQL SERVER EXPRESS Installation, by downloading complements;
No problem to install SQL Server Management Studio
but problem occurs :
I downloaded SQLEXPR_ADV_FRN.EXE (Version : 0.0.0.0)
When I want to install it, I have a first box Extracting Files with :
Extracting Files : setupsqlrun_rs.msi
To Directory ; i:8eefbf891116a71dbc7190cceb05b9
(I don€™t know why it wants to install in this partition !!!!)
Then an error box :
Extraction Failed
File is corrupt
I had same issue when I tried to install SQLEXPR_TOOLKIT_FRN.EXE
Can anyone explain me how to resolve these issues ?
Regards
Mouspi
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Aug 14, 2006
I have merge replication set up between sql mobile and sql 2005 (just recently upgraded from sql 2000). My publication has around 40 published tables, about half of them are filtered. The other day I noticed that the initial replication to get the entire database was downloading the same tables multiple times. The last test was each table was downloaded 10 times. So I did some research which brought me to the following fix, which was to implement dynamic snapshots.
However, when I try to replicate, it generates a dynamic snapshot, but it fails with the following error€¦
An error occurred while reading the .bcp data file for the 'MSmerge_rowtrack' article. If the .bcp file is corrupt, you must regenerate the snapshot before initializing the Subscriber. (Source: MSSQL_REPL, Error number: MSSQL_REPL-2147199428)
I haven€™t changed the snapshot locations, and if I don€™t use dynamic snapshots it works fine. I€™ve tweaked the permissions (in development) to the point where everyone has full permission on the IIS share, and snapshot folder with no luck.
I would appreciate any advice. Thank you!
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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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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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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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Mar 4, 2008
In doing a System Restore an error occurred in my SQL 2005. I've researched the thing, and am prepared to uninstall and reinstall SQL Server 2005, however, even tho I am administrator it will not uninstall. It will not reinstall over the previous install that's in place.
When I go through Control Panel to Add and Remove, when I click uninstall SQL Server 2005 it merely flashes a new window for a second and then does nothing. It will not start an uninstall action.
I don't know what to do short of a full XP Pro re-install.
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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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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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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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Jun 13, 2001
Hi,
I am having problems with my SQL server Agent.
1) When I try to create a New Job/Alert/Operator, I get an error message:
Error 207: Invalid Column Name "category_id"
Invalid Column Name "netsend_address"
Invalid Column Name "last_netsend_date"
Invalid Column Name "last_netsend_time"
.....All these are referring to columns in System Tables of the system Database MSDB.
2)In another SQL Server...say "A", in it's SQL Server Agent, using the Multi-Server Administration, I set up the SQL Server Agent of "A" as the Master (MSX) server, and set up a Target(TSX) server pointing to the Server "B" that has problems in SQL Agent....referred in 1) above. When I try to "Detach the MSX Server" from server B, i get a message Error 207: Invalid Column Name "netsend_address", and cannot detach..........This is again referrring to a System Table.
It appears that the problem is with the MSDB database being corrupt. Is there a way I can Repair a Corrupt MSDB without Re-installing SQL Server 2000 and without a Backup.
Any help greatly appreciate.
Thanks
Russell
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Apr 15, 2006
As the title indicates, I'm having this error during installation. It occurs when I try to install
the "Management Studio" part of the program. I've tried a bunch of things like
copying to hard drive and installing, but to no avail. To isolate the problem, i've even tried removing Reporting services, since at the time of failure it seems to be trying to install/configure the Microsoft.Reporting Services dll.
Additionally, I have SQL Express installed (installed it separately, not as part of the SQL 2005 DVD), VS 2005, .NET Framework 2.0, SQL Management Studio Express CTP. Could the Management Studio Express be causing a problem?
Please note:
Although the error is about missing / corrupt Sql.cab, I have searched the entire dvd for the said file, but there is no file called Sql.cab on the dvd. Am I missing something?
Any solution would be greatly appreciated.
TIA
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Apr 2, 2008
I hope someone has seen this one...I've got a very simple web method that returns a DataTable from my database. It worked fine until I changed this line of code:
string SqlString = @"SELECT Timestamp, Confession FROM Confessions WHERE ConfessionID = ? ORDER BY Timestamp desc";
To this line of code:
string SqlString = @"SELECT Timestamp, Confession FROM Confessions WHERE ConfessionID = ? AND CategoryID = ? ORDER BY Timestamp desc";
Here is the complete webmethod:
[WebMethod]
public DataTable GetConfession (int ConfessionID, int CategoryID) {
DataTable dt = new DataTable();
dt.TableName = "XMLConfession";
string SqlString = @"SELECT Timestamp, Confession FROM Confessions WHERE ConfessionID = ? AND CategoryID = ? ORDER BY Timestamp desc";
using (OleDbConnection cn = new OleDbConnection (ConnectionString)) {
using (OleDbCommand cmd = new OleDbCommand (SqlString, cn)) {
cmd.CommandType = CommandType.Text;
cmd.Parameters.AddWithValue ("@ConfessionID", ConfessionID);
cmd.Parameters.AddWithValue ("@CategoryID", CategoryID);
cn.Open();
OleDbDataAdapter da = new OleDbDataAdapter (cmd);
da.Fill (dt);
}
}
return dt;
}
To cause the error, all I did was add the AND statement into the query. Now I get this .NET error message every time I try to run this program:
System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt. at System.Data.Common.UnsafeNativeMethods.ICommandWithParameters.SetParameterInfo(IntPtr cParams, IntPtr[] rgParamOrdinals, tagDBPARAMBINDINFO[] rgParamBindInfo) at System.Data.OleDb.OleDbCommand.ApplyParameterBindings(ICommandWithParameters commandWithParameters, tagDBPARAMBINDINFO[] bindInfo) at System.Data.OleDb.OleDbCommand.CreateAccessor() at System.Data.OleDb.OleDbCommand.InitializeCommand(CommandBehavior behavior, Boolean throwifnotsupported) at System.Data.OleDb.OleDbCommand.ExecuteCommand(CommandBehavior behavior, Object& executeResult) at System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method) at System.Data.OleDb.OleDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.OleDb.OleDbCommand.System.Data.IDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior)
I am using SQL Server Compact Edition 3.5 and C# .NET 2.0. It's worth noting that the web service does this outside of the program as well, so I don't think the problem is in the code that calls it. Also worth noting is that the query itself works fine when I substitute values in and run it in .NET Server Explorer.
Thanks in advance for any assistance.
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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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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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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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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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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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Oct 13, 2007
I hope someone can help me here. Here is some background.
As I was attempting to download SQL Express, the download dialog box timed out. When I x-ed out of the download, Windows XP Professional 2002 threw up an error message indicating that the dialog box was non-responsive, and I elected to close it.
I downloaded SQL again successfully, and installed with no errors. I then attempted to create a new db through Visual Web Developer. Instead of creating a database, Visual Studio returned an error saying that I did not allow for new database objects, and that I should change my permission settings. I could not figure out how to do this, so I uninstalled SQL Express.
After re-starting, I got the following message: €œYour SQL Server Installation is either corrupt or has been tampered with (could not open SQLEVN70.RLL). Please uninstall then re-run setup to correct this option.€?
I uninstalled MS SQL again from the Add/Delete Programs on my Control Panel. On re-start, I received the same error again. On my Programs list, MS SQL is not present, there are several MS SQL files in the path C:Program FilesMicrosoft SQL Server.
So I located the Visual Studio uninstall tool and attempted to run it. I received the same error: €œYour SQL Server Installation is either corrupt or has been tampered with (could not open SQLEVN70.RLL). Please uninstall then re-run setup to correct this option.€?
Any ideas on how to uninstall the files in my program files so I can load a clean copy of SQL?
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Apr 9, 2007
I was successfully able to installing sql server 2005 developer edition all peices except the "Workstation Component, Book Online, Development Tool", the last item in the installation list. It gave errror for bad sql.cab file. Although this developer edition came directly of the box this error came up in many attempts. Upon "Ignore" it gives error 2350.
I am able to run sql server's all the services and able to access it via VS.Net server browser. I can create and change tables etc. but there is no "Management Studio" installed. There is no icon for it either on the desktop or in the Start->SQL Server 2005 menu.
Is it possible to get and copy sql.cab file or entire client component from somewhere else? --Freed download or something? I searched for sql.cab file but it was not in the CD. It could be inside some other file or cmpressed.
Any suggestion.
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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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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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Dec 31, 2003
I wrong delete all contents of a table.
I was going to restore the full backup database but the file is corrupt.
I have:
The last 5 days backups of Transaction Log;
The actual Transaction Log;
Can you please give me any ideas of how to restore de transaction logs backups and/or uncommitted de deletion of all rows of the table.
Thanks,
Paulo
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Jun 6, 2007
Hi,
I need to receover lost data. My colleague ran a database creation script to create a new database, from Sql Query Analyzer. While doing this, an existing database was selected in the combo box that appears on the top,which led to deletion of records from the existing database. I have a backup of the d.base taken 10days ago. The data was lost yesterday. Is there any way I can restore the database to the previous condition.
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Nov 10, 2007
Hi, I was wondering after I had deployed my data base on the internet and made some modifications with her, what is the best approach to recover the data base deployed? Now if I'm changing some stored procedure in the data base deployed I have to make the same change in the original data base, it gives me a lot of work.
Thank you very much.
Fell free to correct me if I misspeled something.
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Aug 9, 2007
Hello!
Hopefully someone can help me that i have lost my data on my D: drive.
driven shown all folder but in side of the folder there is nothing.
i have lost my Doc, xls, Jpeg etc. all files.
please help me what sould i have to do.
thanks
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