Exchange Database Index Corruption Results in Event 9519( 0xfffffa84)

The key construct of an Exchange database file, EDB, is B-trees. Similar to all other B-trees, these structures have hierarchical pages and indexes to allow fast and efficient search. An Exchange Server database show abrupt symptoms, when these indexes get corrupt or are missing. This can occur due to numerous reasons and will make you resort to EDB Repair steps.

While Exchange database indexes are corrupted or missing, the MS Exchange database troubleshooter tool can encounter several entries with event ID 9519 having error code 0xfffffa84 logging in the application log. Due to this, Exchange server users might experience problems while accessing or mounting the database.

This problem is observed in MS Exchange Server 2003, 2003 or 2007.

Cause

Error 0xfffffa84 of event ID 9519 is logged, if database index corruption is when you:

1. Run database repair command- eseutil /p
2. Apply MS Windows service pack and an index cleanup process starts. This also prohibits mounting of the Information store databases and results in events 611 and 609.

Solution

To troubleshoot the given problem:

1. You need to install the hotfix provided by Microsoft to fix index loss problem caused due to eseutil /p utility.

2. If you experience the above issue after installing Windows service backup, the most suitable option is to restore from last available backup. In case, you do not have any valid backup, you need to perform offline defragmentation using eseutil /d command.

3. You can alternatively repair the corrupted Exchange Server database files and convert the mailboxes to usable *.pst file using third-party EDB Repair sofware.

EDB Repair tool employ powerful set of procedures to extract mailbox data from corrupted Exchange database file. Built with interactive designs, these tools are simple to operate. Also, these software are easily available and can be directly downloaded from their websites without any risk.

EDB Repair Software is a comprehensive utility that repairs corrupted Exchange EDB files and restores mailboxes in *.pst files. This Repair EDB utility restore e-mails, notes, calendars, and other items, while also keeping the original database intact. The tool supports MS Exchange Server 2007, 2003, 2000, and 5.5.