Recover A Corrupted LDF File

Jul 20, 2005

Recently, one of our database's mdf and ldf was corrupted. We were able to
bring back the database with the capability of importing and querying the
data. However, the data is not the full list. Some of the data are still
missing because the tables we want still has sone 'chain mis linkage' error
when we did a DBCC checkdb/checktable. DBCC couldn't fix those errors
either. We're pretty sure that there are some data still burry under the
corruption. Then we thought of the life LDF file. This file should have
recorded every transaction up to the point of failure. So we trying to
recover that file, but there are 2 problems. First is we don't have back up
of that file and 2nd, that file is also corrupted. I couldn't backup the
corrupted ldf file at its current state. It's giving me some unrelated error
message like disk space is out. All I know now is the only hope to recover
those missing data are in this LDF file. We tried to use this software from
Limingent Log Explorer to recover it. So far no such luck with that. So
I'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's
native tools or 3rd party tools. Any input is helpfull. thanks in advance.

Wei

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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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Msg 1813, Level 16, State 2, Line 1
Could not open new database 'world'. CREATE DATABASE is aborted.
Msg 3456, Level 21, State 1, Line 1
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Msg 3313, Level 21, State 2, Line 1
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thanks

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Apr 11, 2006

I use this code to get Tiff files from db , but output file seems to be corrupted :
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        Dim bufferSize As Integer = 100      ' The size of the BLOB buffer.        Dim outbyte(bufferSize - 1) As Byte  ' The BLOB byte() buffer to be filled by GetBytes.        Dim retval As Long                   ' The bytes returned from GetBytes.        Dim startIndex As Long = 0           ' The starting position in the BLOB output.
        Dim pub_id As String = ""            ' The publisher id to use in the file name.
        ' Open the connection and read data into the DataReader.        pubsConn.Open()        Dim myReader As SqlDataReader = logoCMD.ExecuteReader(CommandBehavior.SequentialAccess)
        Do While myReader.Read()            ' Get the publisher id, which must occur before getting the logo.            pub_id = myReader.GetString(0)                        ' Create a file to hold the output.            fs = New FileStream("\Server1shared1logo" & "KK" & ".tiff", FileMode.OpenOrCreate, FileAccess.Write)            bw = New BinaryWriter(fs)
            ' Reset the starting byte for a new BLOB.            startIndex = 0
            ' Read bytes into outbyte() and retain the number of bytes returned.            retval = myReader.GetBytes(1, startIndex, outbyte, 0, bufferSize)
            ' Continue reading and writing while there are bytes beyond the size of the buffer.            Do While retval = bufferSize                bw.Write(outbyte)                bw.Flush()
                ' Reposition the start index to the end of the last buffer and fill the buffer.                startIndex += bufferSize                retval = myReader.GetBytes(1, startIndex, outbyte, 0, bufferSize)            Loop
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        ' Close the reader and the connection.        myReader.Close()        pubsConn.Close()
        Me.Div1.InnerHtml = ("<embed height=650 width=100% toolbar='' src= '" & "\Server1shared1logoKK.tiff" & "' type='application/x-alternatiff'>")
 

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Feb 8, 2012

I trying to update my Aggregation Design for a partition using BIDS Helper.  The current aggregation design contains about 60 aggregations and the new aggregation I am trying to add is across 5 dimension attributes, the product of which is about 500,000 unique values.  The fact table is about 13,000,000 rows.

When I deploy the aggregation and run ProcessIndex, I get the follow error:

File system error: The following file is corrupted: Physical file: ?E:Program FilesMicrosoft SQL ServerMSAS10_50.MSSQLSERVEROLAPDataTestDB.14.dbcube_2.607.cub
cubemeasuregroup_2.633.detDefaultPartition_2.579.prt852.agg.flex.data. Logical file.

If I remove the new aggregation, deploy, and run ProcessIndex again, it processes fine.

Is there some file size limitation I am running into?  The agg.flex.data file is 7.8 GB before adding the new aggregation, so it isn't subject to the same 4 GB limit as .asstore.

Windows Server 2008 64 bit

SQL Server 2008 R2 (10.50.1746.0) 64 bit

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Jun 3, 2015

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Location:              recovery.cpp:4517
Expression:         m_recoveryUnit->IsIntendedUpdateable ()
SPID:                     51
Process ID:          6448
Msg 926, Level 14, State 1, Line 1
Database 'XXXX' cannot be opened. It has been marked SUSPECT by recovery.

See the SQL Server errorlog for more information.
Msg 5069, Level 16, State 1, Line 1
ALTER DATABASE statement failed.
Msg 3624, Level 20, State 1, Line 1

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Msg 3313, Level 21, State 2, Line 1

During redoing of a logged operation in database 'XXXX', an error occurred at log record ID (0:0:0). Typically, the specific failure is previously logged as an error in the Windows Event Log service. Restore the database from a full backup, or repair the database.

Msg 3414, Level 21, State 1, Line 1

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Investigation DONE:

- DBcc checkdb shown Clean 
- database is online and able to access
-Detached database and attached with rebuild log, still could not bring database read_only

SQL version : SQL server 2008 SP4. 

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hi all,

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Tejas Kishanwala

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Jun 15, 2006

Hello!

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

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

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Thanks in advance.

Greetings,

Rens Voogd

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[URL]

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[URL]

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Hi,

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