Find Solution to Errors Due to Exchange Database Corruption

Have you ever come across a situation when all of your Outlook data has been lost from everywhere including Exchange server? Outlook data file issues do not directly result in data loss as you can recover it from the data placed on server. However, if you lose access to the Exchange database files that contain the entire Outlook data, you encounter the actual data loss, which is one of the worst cases.

All the user mailboxes are stored within EDB files on Exchange and once the file faces corruption, it becomes inaccessible and various error messages occur that are listed below:

• JET_errRecordNotFound, the key was not found”, “Jet_errRecordDeleted”.Server Specific Error 4294966781 equates to JET_errInvalidLogSequence. The log files are out of sequence.
• # 614. All future database updates will be rejected. Information Store (3420) Unable to rollback operation.
• Corrupted or damaged EDB headers
• JET_errDatabaseStreamingFileMismatch -540
• Unable to initialize the Microsoft Exchange Information Store service.
• Exchange dirty shutdown state
• “The System Cannot Find the Path Specified”
• “Sever Specific Error 4294966278 (JET_errReadVerifyFailure)”

The EDB database is actually made up of two main files: Pub.edb and Priv.edb, placed in Information Store, which is the heart of Exchange Server. When corruption occurs in Information Store, you may face the following symptoms:

• The MS Exchange Server Information Store fails to start.
• The Information Store does not respond when the usage of CPU is 100%.
• The clients are not able to send or receive emails and the same problem continues after stopping or restarting the Information Store.
• Information Store cannot be stopped.
• When administrator tries to use offline backup to Exchange databases, and then runs Isinteg (Information Store Integrity) utility, the following message occurs:

“Error 4294966746: JET_errDatabaseInconsistent”

To deal with such conditions, Microsoft has provided an Exchange Server utility known as Eseutil. The repair procedure requires different switches (such as /mh, /r, /p, /d) in combination with the Eseutil utility. However, the procedure must be performed carefully. For inexperienced administrators, it becomes quite difficult to carry out the task in a very accurate manner. Therefore, to simplify the repair process, it is better to use a commercial Exchange EDB recovery software application that will require some necessary inputs and repair the EDB files successfully.