Exchange Recovery With EDB 2 PST Converter When Log Files Are Missing

by Grey Meredith Software

Smooth functioning of Exchange Server and its database accessibility depends upon its database file, transaction logs and the checkpoint files. However, a user interact with .edb, .log and .chk file at the time of backup creation, restore or while database recovery.

Database (.edb) File: Also called as repository of Exchange mailboxes, it is a B-Tree structure that is accessed by the Extensible Storage Engine. The B-Tree structure of the file is to ensure quick access to the data stored in it (in maximum 4 input/output cycles).

Log (.log) File: Before a transaction is committed to the database, it is first registered in the transaction log. This design in Exchange Server ensures that accessibility over the database is retained even when backup is created.

Checkpoint (.chk) File: This file stores information about transactions that are logged into the database. The edb.chk file helps to keep a track of data that is unwritten to the database and that has to be written into it.

“LOG” Files Affect “EDB” Mailbox Accessibility!

When Exchange Server starts up, it performs a test checking if all operations are completely written to the database, i.e. the data written in the transaction log is detached from it and is committed to the database. If the condition is satisfied, Exchange starts up uninterruptedly and the users gain access over the mailbox data.

Contrary, if the transactions are pending, i.e. the data in log file stream is still attached with the database, then the pages in the database are marked as dirty. The dirty system shutdown issues can be fixed by replaying the log files through hard and soft recovery.

However, there are situations where log files are missing, removed or gets corrupted, the Exchange Server do not get appropriate information from the log files to start up or to respond to an instance. In cases unavailability of log files generate accessibility over the mailbox database; it is the only solution left is to opt for some EDB 2 PST converter.

How Exchange EDB File to PST Conversion Tools Help?

Solutions that are available online for EDB to PST file conversion have the potential that they can work with a corrupt, offline or orphaned EDB file. Therefore, even if log files are missing or in damaged state giving errors ‘Operation terminated with error -501 (JET_errLogFileCorrupt, Log file is corrupt)’, these tools are capable to retrieve mailbox data and save it as PST.

Reliable name in EDB 2 PST converter category is Exchange Recovery software that is a development from a renowned brand. This tool specializes in damage or offline EDB conversion to PST, MSG, EML, or Exchange Server within the organization. For PST manageability in Outlook, split PST option is integrated in the tool.