Exchange Server Error Codes "Unable to Read the Log File Header" and Exchange BKF recovery

Sometimes when you are about to access information or a very important email, it happens that Exchange database declines to connect. This shows that there is corruption in its database.

For example, consider a situation when you are retrieving some attachments and emails and following error occurs meanwhile:-

Unable to read the log file header.


This error is known as event 412 in application event log. The ESE error code that displays in description section of this event, facilitates detailed information of the root cause.
This Exchange error code appears when Exchange database engine is not able to read the file header. This indicates that log file has a mismatching signature and has disproportion header information. Many other ESE error codes also known as (Jet_err) errors, some are as follows:

• Jet_errLog fileCorrupt or error -501: The header of the log file is corrupt.
  
  
• Jet_errBadLogSignature or error -530: The log files signature mismatch. The log file signature ensures the correct replaying of log files set and is included in each database header. The error occurs when they mismatch.
  
  
• Jet_errDiskIO or error -1022: A disk I/O issue for requested page in transaction log or database. Generally -1022 error occurs because of severe database corruption. For a log file, the cause is corruption of log file header.
  

In such a case, backup of the database works as a second life for Exchange Servers. Or the worst situation will be if the BKF file becomes damaged due to some uncommon reasons. To repair .bkf file user can apply or execute NTBackup command that is default tool for Exchange BKF recovery. This utility is manufactured by Microsoft and is helpful to repair backup file but it fails in disaster corruption.

At that time you can take help from any skilled or expert commercial tool that is perfect in repairing corrupt Exchange BKF file such as Stellar Phoenix Exchange BKF Recovery software that easily repairs damaged backup file of Exchange server and help to mount all data in Exchange database so that user can easily get back to his work. This software can work in Exchange versions 2007and 2003.