Home / All types of Jet Engine Errors

What are - All Types of Jet Engine Errors?

All communications to an Exchange Server computer are carried out through a process named ‘Store.exe’. This type of setup does not require the true capabilities of a client-server database engine. For this reason, Microsoft has developed a lightweight storage engine called Extensible Storage Engine (ESE or JET Blue) that is optimized for MS Exchange.

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ESE or JET Blue facilitates data storage and retrieval through indexed and sequential access. As both JET data and engine are on the same computer, it reduces the overhead of a client-server database. It has crash recovery mechanisms to ensure that your data is consistent even after a system crash. 

It is the most important component of the Exchange Server database which manages the database objects effectively and accelerates the database performance. It is the critical object for large databases for providing easy and quick access to the user.

But sometimes, this critical component of the database becomes problematic and causes several difficulties. You can face the following JET engine error messages when such situations occur:

  • JET_errRecordNotFound, the key was not found
  • JET_errReadVerifyFailure Read verification error 4294966278
  • The Microsoft Jet database engine cannot open the file '(unknown)'. It is already opened exclusively by another user, or you need permission to view its data.
  • 100 JET_errRfsFailure
  • Unable to initialize DAO/Jet db engine
  • The Jet VBA file (VBAJET.dll for 16-bit versions, or VBAJET32.dll for 32-bit versions) failed to initialize when called. Try reinstalling the applications that returned the error
  • The Microsoft Jet database engine stopped the process because you and another user are attempting to change the same data at the same time

After any of these error messages, the database becomes inaccessible that can ultimately lead to the nightmare of data loss. For repairing the database and accessing the data, it is required to identify the cause of the error message. There can be several reasons of these error messages such as:

  • The Microsoft Jet or DAO files are mismatched, or one or more of the DAO or Jet files are damaged
  • Data was written incorrectly in the database file, which could be caused by third party applications that integrates with Exchange Server
  • There are corrupted objects in the database
  • Whole of your EDB file is damaged
  • Exchange Server Jet Engine has got damaged

In order to deal with the aforementioned scenarios, you should use Stellar Repair for Exchange. The software is designed with ingenious mechanisms that help you fix all types of JET engine errors and carry out complete recovery of your damaged or inaccessible Exchange database.

This competent Exchange recovery tool empowers you to scan the entire database for consistency errors. You can choose the most appropriate scanning algorithm to perform recovery, i.e. 'Quick Scan' and 'Extensive Scan'. 'Quick Scan' works for all database corruption cases, while 'Extensive Scan' is preferred if the former fails to yield satisfactory results.

After recovery, this software converts the EDB file into PST format that can be directly used with Microsoft Outlook email client. Exchange Recovery can be carried out using this tool for all the latest versions of MS Exchange Server including 2010, 2007, 2003, 2000, and 5.5.

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