EDB Recovery Tool

Microsoft Exchange Server Calendaring agent is the tool that allows performing several scheduling tasks, which include creating and saving appointments etc. For the tool to function properly, it is required that Exchange directory structure remains excluded from antivirus scanning. Another disadvantage of scanning your Exchange Server directory structure is that it may also lead to corruption of the most important files in your Information Store, such as .edb, .stm, .chk, and .log files. Since most of your important data resides in your .edb files, EDB Recovery becomes essential while such instances.

To illustrate such scenarios with Calendaring agent, suppose you try to save few appointments in MS Exchange Server. Your observe that Calendaring agent fails to function properly. Some or all of the calendar information are lost. Additionally, you receive the similar entries logging in application event log of Exchange Server:

Event ID: 8206
Source: EXCDO
Description: Calendaring agent failed with error code 0×80040229 while saving appointment

and

Event ID: 1160
Source: MsExchangeIS
Description: Database resource failure error First Storage Group\Mailbox Store (MAIL) occurred in function JTAB_BASE::EcPrepareUpdate while accessing the database “0xfffffc0d”.

You may also encounter Event IDs: 2 and 7200 describing the failure of Exchange Calendaring agent.

Cause
Exchange Server exhibits the above described behavior when a file-level antivirus software is installed and is configured to scan the Exchange Server directory (EXCHSRVR) structure.

Solution

The solution to this problem is to reconfigure your antivirus software and not to include EXCHSRVR directory and drive ‘M’ in this scan.

A file-level antivirus software locks and scans the file that is currently being tried to access by Exchange Server. Thus, the Information Store fails to lock this file and eventually, the file may become corrupt and unusable. When this occurs, your first recommendation is to restore the database from a previous backup or apply eseutil repair utilities (/p and/or /r switches) for the affected database(s).

However, if none of the database restore method works, you need to use an EDB Recovery Software that can scan and repair the corrupted database effectively. The EDB Recovery utilities are exclusively designed and simple products that allow to repair and restore the damaged Exchange database.

The EDB Recovery Tool is an excellent working utility that repairs corrupted Exchange Server database and restores the individual mailboxes as *.pst files. The advanced EDB Recovery Software supports Exchange Server 5.5, 2003, and 2003. The tool provides an easy and safe mailbox restoration with an interactive user interface.

Distributed File System or DFS is typically a set of services deployed in a client-server architecture to store and access the files. A DFS link is particularly a share placed on network, which can be used to redirect to the shared folder. Microsoft Windows Storage Server 2003 Feature Pack stores the names of these DFS links in registry, along with other configuration information. The link names are used by Exchange to access its databases and log files while writing to log files. When you apply a configuration update, this might lead to inconsistencies among Exchange storage group databases and its log files. For any reason, if a valid backup is unavailable, it is suggested to use EDB Recovery software to repair and recover the databases. If you use Eseutil utility, this could cause data loss by deleting the corrupted pages.

To illustrate such scenarios, suppose you use a configuration update that could restore various names of DFS link from Windows registry. After this, when you try to mount Exchange Server store, the operation fails.

Cause

As discussed, this behavior occurs because of inconsistencies of Exchange Server log files and databases. DFS links’ names are generated on use of configuration update. Now if there are various registry entries storing DFS links that have been deleted, the configuration update might use different names of DFS links instead of successfully repairing them. This causes a mismatch between original DFS links’ names and those created while update and also, the log files contain indifferent information from within the databases. As a result, Exchange databases and log files become inconsistent.

Solution

To solve the problem, described above, you should apply these measures:

• Dismount all the Exchange databases and run eseutil /mh command for each database to verify for clean shutdown state

• You should run eseutil repair utility for databases that show dirty shutdown state or restore them from backup

• If all remote databases are consistent, dismount all the databases on virtual server

• Run the update for each database and remount them

However, if no database recovery is feasible using backup and/or eseutil fails, you should opt for safe Recover EDB solutions. EDB Recovery Tool is powerful and feature-rich product that use high-end scanning algorithms to repair and restore damaged Exchange databases.

Stellar Phoenix Mailbox Exchange Recovery is an advanced utility that uses effective scanning algorithms to recover corrupt EDB file from MS Exchange Server. It supports Exchange Server 5.5, 2000 and 2003 and restores individual mailboxes in PST files. It is a secure EDB Recovery Software with quality features

Exchange Server supports transaction logging and numbers them sequentially. It starts naming them from E nn 00001.log and goes on till E nnffff0.log, where nn represents the storage group number. When all the log files are exhausted, Exchange Server gives ‘JET_errLogSequenceEnd’ error and causes different issues, as discussed below. You need to remove these log files while making sure that the databases are healthy. If not, you should restore them from backup or repair using eseutil utility or a EDB Recovery software

For instance, you might come across these symptoms in a computer running Exchange Server 2000 or 2003:

1. The connected users experience failures when trying to logon to their mailboxes. The databases become inaccessible even when they are mounted. It specifically occurs in Exchange Server 2000 that is not using August 2004 Exchange 2000 Server post-Service Pack 3 update rollup or in original version of Exchange Server 2003. The application log shows event ID 1022.
2. The databases in computer running Exchange Server 2003 SP1 or SP2 or August 2004 Exchange 2000 Server post-Service Pack 3 update rollup get dismounted without displaying any warning. When you try to mount them, it shows an internal processing error and logs event 1159 and 9518 in application log.

Cause

Exchange Server has used all the available transaction log files of storage group.

Solution

To solve the given problem, you need to reset the log sequence by removing all the log files to a different location. But before you do so, you should ensure for databases’ consistency. You should follow these steps:

1. Select the ‘ Don’t mount this store at start-up’ option to make sure that they don’t mount at startup
2. Dismount the database that cannot be dismounted by killing the store
3. Mount the other storage groups by restarting the store
4. Try to repair the problematic storage group databases by running eseutil /r
5. Check for databases’ consistency by running eseutil /mh
6. If they are consistent, move checkpoint and log files to a different location and mount the databases
7. If the databases remain inconsistent, you should delete the damaged databases provided you have a full backup to restore. If not, you can use a powerful Exchange Recovery utility to repair and restore them.

EDB Recovery Software are well-designed and exclusive applications that allow you to extract all user mailboxes from a corrupted Exchange database and restore them safely.

Stellar Phoenix Mailbox Exchange Recovery is an advanced and non-destructive utility that uses powerful scanning algorithms to repair a damaged Exchange Server database. It is compatible with Exchange Server 5.5, 2000 and 2003. It is a safe Recover EDB tools with impressive set of features. The tool extracts user mailboxes in individual .pst file format files.

In Microsoft Exchange Server, each database, log or checkpoint file starts with a 4-KB header. The file header contains its configuration and identification data. Unlike log file headers, the database (*.edb) and checkpoint (*.chk) headers are constantly updated while normal operations. There is one more header called ’shadow header’ that is identical to primary header, lying next to it. This header safeguards the primary header while updates as modifications are first made to shadow header page prior to primary header. So, if a crash occurs before the updates could finish, the primary header still remains intact. But some factors can prevent the write operation to be performed to database files, resulting into an error described below. To resolve the issue, you may need to repair the unmountable database using eseutil repair utilities. However, you can also opt for safe and better alternative of using EDB Recovery software.

For example, you might receive the below error when mounting or using an Exchange Database:

“Unable to write a shadowed header for the file.”

The error is marked with event 439 in application event log.

Cause

The above error indicates access-denied condition. This is because the shadow page is the first header page that is updated. At this point, the database service stops in order to preserve database integrity. The Exchange database engine is denied to write data to its own EDB or CHK files due to one of the possible reasons:

1. The file is in use by another process. In this case, you usually get -1032 error.

2. The root folder permissions have been removed.

3. The file is read-only. It generally occurs with *.chk files.

4. The drive cannot be accessed because of disk or controller failure.

5. The root folder of files has been either deleted or renamed.

Solution

You need to apply one or more of the below steps:

1. Check the application and system log for disk capacity issues and resolve them

2. Restart the Exchange computers

3. Check for sufficient disks’ access

4. If database is running, move its mailboxes to another server using Move Mailbox command

5. If the database cannot mount, consider one of the methods:

- Restore from backup

- Run eseutil /p and isinteg -fix commands to repair the database. Use ExMerge to a new database

- Repair the database using EDB Recovery Software. These special tools can perform safe and quick EDB Recovery using advanced scanning algorithms.

Stellar Phoenix Mailbox Exchange Recovery is a reliable and efficient utility to repair a corrupted Exchange database created with Exchange Server 5.5, 2000 and 2003. The powerful EDB Recovery Tool can restore individual mailboxes in .pst files, without changing their contents. The software is known for best database repair results.

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Transaction log files contain the uncommitted data of an Exchange database. When an EDB (Exchange database) file crashes, the transaction log files act as disaster recovery means as they bring the database to a consistent state. For these reasons, it is recommended to store transaction logs on a different drive to avoid disk failure consequences that can affect the database. At times, Exchange Server observes issues when writing data to the drive where log files are stored. This can occur out of several reasons, such as file system issues, antivirus software problems, disk concerns etc. You need to troubleshoot the root cause. However, if the database is still inconsistent, you should restore the damaged database from backup or apply Exchange eseutil tool. Alternatively, you can opt for using an EDB Recovery Software to repair the damaged database.

For example, you might receive the below error with your Exchange Server:

“Unable to create a new log file because the database cannot write to the log drive. Drive may be out of space or incorrectly configured. Check file system, drive space, and antivirus settings.”

This error is logged with event 413 in application event log.

Cause

The possible reasons for the above error to occur depend on the error number described in the event description section, as follows:

1. Error -1022 = Jet_errDiskIO: This error occurs due to general disk I/O errors that resist the access of requested database page or checking a file.
2. Error -1032 = Jet_errFileAccessDenied: The error indicates that Exchange Server cannot access the file, probably because it is read-only or is in use by a process (virus checking or backup process).
3. Error -1811 = Jet_errFileNotFound: The error -1811 implies that Exchange cannot found the log file because it is missing or has mismatching signature with the database. It can also occur if the log files are stored on an unsupported network storage, failed drive or deleted by an antivirus software.

Solution

You need to apply these methods to solve the given issue:

1. Make sure that the log drive file system is free from errors by running chkdsk
2. Check for system related problems in system log
3. Check for the write permissions and available space on the disk
4.Make sure that an antivirus software is not running
5.Change the folders’ permissions containing information store file to default

After running the above steps, make sure that the database is consistent. If not, you should restore it from backup. When there is no valid backup, you can run hard recovery for the database using eseutil
/p and isinteg -fix commands. But the command deletes the corrupted data instead of repairing it. Thus, you should make a backup first.

To repair the database safely, you should use an EDB Recovery utility. These are perfect EDB Recovery Software equipped with database-aware algorithms to repair the corrupted Exchange database and extract the user mailboxes.

Stellar Phoenix Mailbox Exchange Recovery is a powerful tool that repairs corrupted Exchange database created with Exchange Server 5.5, 2000 and 2003. The comprehensive EDB Recovery Software product can restore all the user mailboxes as PST file, directly importable within MS Outlook. The tool is compatible with Windows 7, Vista, XP, 2003 and 2000.

A corrupted or damaged Exchange Server database exhibits abrupt behavior while normal database operations. However, you can deduce the root cause of the issue and sometimes, solution to the problem by application log entries. You should restore the corrupted database from the last backup, if is available and valid. In case of database issues, you are recommended to use EDB Recovery Software to repair the damaged database.

For example, consider you use Exchange Server 2003 or Exchange Server 2000. You use Exchange online backup to backup your Information Store database and fail to do so. When you view the application log in Event Viewer, you encounter the below error message:

“Information Store (2240) The database page read from the file “E:\program files\exchsrvr\mdbdata\priv1.edb” at offset 204275712 (0×000000000c2d0000) for 4096 (0×00001000) bytes failed verification due to a page checksum mismatch. The expected checksum was 303571876 (0×121823a4) and the actual checksum was 303571940 (0×121823e4). The read operation will fail with error -1018 (0xfffffc06). If this condition persists then please restore the database from a previous backup.”

This error is logged with event ID 474.

Cause

Error 1018 indicates JET_errReadVerifyFailure error. It results because of checksum errors on database pages. The prominent reason for this error to occur is Exchange database corruption due to file system errors. If the disk subsystem is suffering from issues, like defective disk drivers, faulty controller or outdated or incompatible firmware, this could result into Exchange database corruption.

Solution

You can solve these problems by these methods:

• Try to perform backup using different storage group located on a different server disk.

• Diagnose and troubleshoot your Exchange Server running system for possible hardware issues

• Update your system with the latest firmware and drivers updates available

• If a clean data backup is available, restore your database

• Perform hard repair of the database using Eseutil /p in case no suitable backup is present

• Eseutil /p is a destructive repair operation that could delete the corrupted database pages. To prevent the consequences, you should use safe EDB Recovery utilities.

EDB Recovery Software are powerful tools to examine, repair and restore damaged Exchange databases using efficient scanning algorithms. These tools provide you graphically rich user interface and advanced features that result complete database repair.

Stellar Phoenix Mailbox Exchange Recovery is a fully-competent tool to systematically repair damaged Exchange databases created with Exchange Server 5.5, 2000 and 2003. It provides safe EDB Recovery Software and extracts all user mailboxes by converting them into Outlook usable .pst files. The tool can recover all email messages, notes, journals, tasks and other objects.

The general causes of Exchange database corruption root from hardware errors. If the hardware is faulty, it may repeatedly introduce major inconsistencies in database. However, the other causes are unexpected shutdown, antivirus scanning, software bugs, incompatibility issues and more. In all such situations, you either need to restore from backup or apply Exchange repair utilities. If all these measures fail, you need an appropriate EDB Recovery Software.

For example, you might encounter the below warning with your Exchange Server databases:

“Detected data inconsistency. Check the Application log carefully for related events and patterns that may relate to this event. You may have to restore from online backup”

When you start the server, all Exchange Server services may start, except that the mailbox stores don’t mount.

Cause

The warning suggests corruption or inconsistency in ESE database, specifically in a table. The typical reasons for such warnings to generate are:

1. Hardware, controllers, file system or drives issues.

2. Antivirus scanning.

3. Corrupted restore operation.

Solution

You should check the application log and system log for related description about the issue. If defective hardware comes out as issue, you should consider replacing them. You also need to repair the file system, if it is inconsistent and update the hardware system files. For database corruption concerns, you need to apply these methods:

1. Check if you can mount the database, If yes, you can:

- Run ExMerge to extract the data in .pst files. You can then delete and copy the database to a blank database.

- You can move all mailboxes to another store and move them back after deleting the corrupted one.

2. If you can mount the database:

- Restore the database from an online backup

- If no clean backup is available, you can repair the database using eseutil \p and isinteg -fix

Eseutil \p performs hard recovery of database and results into deletion of pages. Thus, it is not a safe operation to perform. You can use a EDB Recovery utility instead of it, which provides secure techniques to repair and restores a corrupted Exchange database. EDB Recovery Tool are graphically rich applications that allow for easy and comprehensive database repair.

Stellar Phoenix Mailbox Exchange Recovery is a powerful solution that repairs and restores corrupted Exchange databases. The EDB Recovery Software product supports Exchange Server 5.5, 2000 and 2003. It is a safe database repair tool with rich graphic features. The tool extracts all user mailboxes in individual .pst files without modifying its contents.

Exchange Server storage groups and databases are the most vital component of recovery when the server crashes. You might observe typical symptoms with a corrupted Exchange database. For instance, you may fail to backup it. When it occurs, the corresponding event indicating the failure is logged in application event log, which helps you to deduce the cause. However, a corrupted Exchange database should be restored from backup. In case of unavailability of backup, you need an effective EDB Recovery product to repair and restore it.

For example, you might encounter the below event logging into application log of Exchange Server after failing in attempts of backing up the Information Store:

Event Type: Error
Event Source:ESE
Event Category:Logging/Recovery
Event ID: 217
Date:10/25/2007
Time:12:15:31 PM
User:N/A
Computer:EXCHANGE
Description:
Information Store (5484) First Storage Group: Error (-613) during backup of a database (file D:\Program Files\Exchsrvr\mdbdata\priv1.stm). The database will be unable to restore.

The error is usually accompanied with event 478.

Cause

Event 217 typically indicates backup failure and event 478 shows database corruption due to hardware issues. Event 217 might also be encountered due to Exchange beyond EOF (End Of File) condition.

Solution

Make sure you install all the latest updates and hotfixes available for your Exchange Server. To correct the corrupted database issues, you should perform steps, as follows:

1. Use your last online backup to restore the Information Store databases

2. Try to move mailboxes to another store if you are using Enterprise edition of Exchange Server 2000 or 2003

3. If none of the above solution is applicable, try to repair the database. To do so, you need to use eseutil /p repair command and then eseutil /d command to defragment the database. But the command deletes the pages that it finds as corrupted. For safe database repair, you should run EDB Recovery Software that use safe algorithms to restore damaged Exchange databases.

EDB Recovery utilities are high-end applications with interactive design that provide complete database repair results. These software are highly reliable and require no prior technical skills to operate them.

Stellar Phoenix Mailbox Exchange Recovery is a powerful tool that provides systematic Exchange database repair. It is a secure EDB Recovery Software that supports Exchange Server 5.5, 2000 and 2003. The tool can restore mailboxes in individual .pst files, which can be directly accessed in Outlook. The software is enriched with a realistic approach to repair corrupted EDB file in each instance.

Microsoft Exchange Server uses checksum procedure to confirm for database pages integrity. You can use ESEUTIL utility with /K switch to verify page-level integrity of Information Store databases. If it results errors, one or more of your database pages are corrupted that you need to restore from the available backup. In case no suitable backup is present, you require to use an EDB Recovery Software.

You might come across any of the below symptoms with your Exchange Server:

1. Error “Database page read failed verification because of a -1018 error (page checksum mismatch). This page level error is often caused by driver, firmware, or hardware issues.”

2. Users fail to send or receive email messages

3. You receive -1018 checksum error when you attempt to perform online backups

4. You encounter -1018 checksum mismatch error when you try to defragment the database

5. At client side, Microsoft Outlook is not started

Cause

Such behavior is usually exhibited when a database page read fails verification. As indicated, this occurs due to mismatch of page checksum. The referenced page stored on Exchange EDB file is corrupted.

Note: The error indicates inability to retrieve data from EDB database file, which might also occur due to RAM or firmware issues.

Solution

You are recommended to follow these suggestions to isolate the given issue:

1. You should run system diagnosis to check for RAM or firmware related concerns. You can deduce the issue if the corruption problem is frequent

2. Try upgrading the firmware and system BIOS to their latest versions available

3. Repair the damaged EDB files using eseutil /P. You should then execute eseutil /D followed by isinteg -fix

4. If ESEUTIL repair utility fails to fix database corruption, you need to migrate the database from recent backup. However, while any concerns related to restoring from backup, you should Recover EDB file by using third-party special purposed tools.

EDB Recovery Software are high-end tools with powerful, yet safe, algorithms to examine, repair and restore the damaged Exchange Server database. These applications are reliable tools that work efficiently and successfully extracts all user mailboxes without harming the actual database contents.

Stellar Phoenix Mailbox Exchange Recovery is a comprehensive tool to safely extract all the mailboxes from damaged databases created with Exchange Server 5.5, 2000 and 2003. It is a safe Exchange recovery product to Recover EDB and all objects including emails, email properties, tasks, drafts and more.

In Microsoft Outlook, the Delegate access allows you to share Outlook resources, like appointment schedules, for enhanced coordination across various workgroups and throughout the organization. But in some situations, when you try to access the Delegate tab, it can not be accessed and you might come across some error messages. This problem could be due to some issues with Exchange Server mailbox. To handle this situation, you need to repair the Exchange Server database (EDB file) and extract mailboxes from it. For this purpose, you need to go for EDB Recovery solutions.

In a practical scenario, when you attempt to access Delegate tab in Microsoft Outlook email client, you might come across the below given error message:

“The Delegate page is not available. Unable to access Outlook folder.”

At this point, you can not access shared data from Exchange Server and come across data loss situations. At this point, you need to find out the cause of this problem and go for appropriate EDB Repair solution to gain access of your mission critical data.

Cause of this problem

You might encounter this error messages due to corruption to the Exchange Server mailbox. In mix mode organization of Exchange Server, this issue might take place because of an erroneous homeMTA attribute. When the problem is caused by the incorrect homeMTA attribute, you can not add new users from EGAL (Exchange Global Address List) to your personal distribution list.

Furthermore, if you’ve wrong value in Secretary Field, you encounter same error message. For instance, the following profile contains a wrong value for Secretary Attribute:

CN=Username\0ADEL:8e945738-9e88-4dc8-991b-e8ce46799ca5, CN=Deleted Objects, DC=Comatose, DC=com

In above example, Secretary Attribute points a deleted object of domain.

Resolution

If the problem is due to homeMTA attribute, verify it and correct it. However, if mailbox corruption is causing this issue, go for EDB Recovery solutions to repair and restore data from corrupted EDB file.

Recovery is best possible with the help of powerful and effective third party applications, known as EDB Repair software. These tools use adequate algorithms to methodically scan damaged Exchange Server database and retrieve all of its inaccessible objects such as emails, notes, contact, tasks and so forth. With self-descriptive and interactive user interface, these tools are completely easy to use.

Stellar Phoenix Mailbox Exchange Recovery is the most excellent solution to handle majority of EDB corruption circumstances. It works well with Exchange Server 2003, 2000 and 5.5. This software is compatible with Windows 2003, XP and 2000. Due to read-only and non-destructive design, this software is completely safe to use.

FBA (Form Based Authentication) is used as a term of art in context of Web or Internet based network computers and in collaborative messaging environment with Exchange Server. It refers to notion of a user being presented with editable form to fill and submit to log into the Exchange Server account. It is basically employed to enhance the security of sensitive and confidential emails and other personal data. In some situations, FBA may get broken and you can not log into your Exchange Server account. This situation could occur due to Exchange Server database corruption or some issues with the EDB file objects. At this point, you are required to go for EDB Recovery solutions to repair and restore damaged EDB file.

In a practical scenario, when you start Microsoft Exchange Server, everything else works file (such as OWA (Outlook Web Access) with HTTPS redirection, SSL public folder, OMA (Outlook Mobile Access) and RPC (Remote Procedure Call) over HTTPS) but FBA is broken. After changing the IP addresses of any website, things may start active strangely. You can not access anything from the Exchange Server and may face critical situations of data inaccessibility and data loss.

If you restore the default settings to sort out this issue, you might come across the following error message:

“Server object error ‘ASP 0177: 800401f3′
Server.CreateObject Failed
/exchweb/bin/auth/owalogon.asp, line 4
800401f3”

Grounds of the issue

This situation may occur due to the number of reasons, which include the followings:

• Exchange Server database corruption

• Version incompatibility issues after upgrading to later version of Exchange Server

• Missing or damaged Exchange Server objects

In all these cases, the data can not be accessed normally and you need to perform EDB Repair by sorting out this problem.

Resolution

In order to gain access of your critical data in such cases, you are required to repair and restore damaged Exchange Server database. This is best possible with the help of powerful and advanced third party software, known as EDB Recovery applications.

These tools use effective scanning mechanisms to restore all of the EDB file objects including emails, notes, contacts, calendar entries, tasks, journal, personal folders and so forth. With interactive and simple graphical user interface, these tools allow you to perform easy, quick and absolute EDB Repair.

Stellar Phoenix Mailbox Exchange Recovery is the most excellent EDB Recovery Tool to handle majority of Exchange Server database corruption issues. This software works well with Exchange Server 2003, 2000 and 5.5. It is compatible with Microsoft Windows 2003, XP and 2000.

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In Microsoft Windows, you are allowed to expand a clustered volume and can move the expanded volume to another node in same group as per your requirement. But in some cases, when you use the Diskpart utility for expanding the clustered volume on Microsoft Exchange Server, which is running cluster service and then more expended volume to another node, you would not be able to gain access of the Exchange Server Database (EDB file) stored on it. This behavior renders all of your user mailboxes and critical data inaccessible and critical data loss situations occur. At this point, to get your valuable data back, go for EDB Recovery solutions.

In a practical scenario, when you try to access EDB file in such cases, you might come across the below given error message:

“The system cannot find the path specified”

You may also encounter this error message even on unexpanded volumes in some cases.

Root of the issue

This situation may occur due to a number of possible causes, depending on the changes you’ve made to your system or the changes occurred due to virus infection, software malfunction and other similar reasons. The major reasons are as underwritten:

• When the hard drive volume structure is altered, it probably has modified the EDB file path.
• While expanding a clustered disk volume, file system entry of EDB file has mot deleted or damaged.
• The EDB file has got corrupted because of damage to file system entry or due to virus infection and improper system shutdown like causes.
• The file path is damaged and thus operating system can not find specified file.

In such circumstances, you are required to carry out EDB Repair to gain access of your mission critical data.

Resolution

There are two potential ways to overcome this issue. These are:

1. If the issue is due to expending clustered server volume, download and install hotfix provided by Microsoft.
2. If EDB corruption is the cause of this problem, repair and restore the EDB file using EDB Recovery software.

The EDB recovery software are particularly designed to scan the EDB file and retrieve all of its objects. The recovered file can be imported to Exchange Server and after creating new profile, you can use it as before. These EDB Repair applications are quite easy and safe to use.

Stellar Phoenix Mailbox Exchange Recovery is the most comprehensive tool to repair and restore damaged EDB files. It works well with Microsoft Exchange Server 2003, 2000 and 5.5. This software is designed for Microsoft Windows 2003, XP and 2000.

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In Microsoft Exchange Server, a Storage Group may contain one or more Public Folder Stores and user mailboxes, depending on the requirements of the organization and version of Exchange Server. Mailbox stores have system and user mailboxes and Public Folder Store contains Public Folders and their contents. All these data and information is controlled and managed by Exchange Server Information Store. This is the key component of Microsoft Exchange Server. In some cases, this store may get damaged or become inconsistent. This behavior of Information Store makes all of your critical and valuable data inaccessible and data loss situations occur. At this point, you are required to go for EDB Recovery to repair and restore damaged database and retrieve data from it.

In a practical scenario, when you try to access data from Microsoft Exchange Server database, the database store may not mount and Event ID 448 may occur. This Event ID shows that there is some corruption or inconsistency in the Jet database table and Exchange Server Information Store. In such case, the following Event is logged in the Application Event Viewer of Exchange Server:

Date: Date
Source: ESE
Time: Time
Category: Database Corruption
Type: Error
Event ID: 448
User: N/A
Computer: ServerName
Description: Information Store (2412) Data inconsistency detected in table Msg of database E:\Program Files\exchsrvr\mdbdata\priv4.edb (0,524957). For more information, click http://search.support.microsoft.com/search/?adv=1

When Exchange Server starts, all of the services related to server might start, but the mailbox stores can not be mounted. When you verify database integrity by running eseutil /g command, the process completes successfully and you encounter following error message:

The Database is corrupted.

In such situations, you need to find out the cause of this issue and carry out EDB Repair by sorting it out.

Grounds of the issue

As stated in the above error messages, you might encounter this problem due to corruption to the Information Store and Exchange Server mailbox store.

Resolution

In order to sort out this issue, you need to repair and restore damaged database using EDB Recover Tool. This software is particularly designed to effectively scan the damaged database using advanced scanning mechanisms and retrieve as much data as possible from it.

Stellar Phoenix Mailbox Exchange Recovery is the most advanced and effective solution to retrieve data from damaged Exchange Server database. The EDB Recovery Software are capable to recover EDB file objects and these are completely safe and easy to use. This software works well with Exchange Server 2003, 2000 and 5.5. It is compatible with Microsoft Windows 2003, XP and 2000.

The disk compression, as the name suggests, is a method of reducing the needed disk space for a specific hard drive volume, folder or file. The compression, which is accessible and done on the NTFS (New Technology File System) file system volumes, is known as NTFS compression. NTFS file system allows you to compress files, folder and hard drive volume for decreasing the requirement of hard drive space. But in some situations, compressing a hard drive volume on which Exchange Server is installed may cause EDB (Exchange Server Database) corruption and results into data loss. In such case, carrying out EDB Recovery becomes the need of hour.

Bad effects of NTFS file system volume compression have been observed with respect to Microsoft Exchange Server Information Store that is the repository of all the user mailboxes and critical data. The Information Store Service is the core component of Microsoft Exchange Server, but NTFS compressed partition might damage it. Information Store corruption particularly when the size of compressed volume exceeds 4 GB.

è A number of users/clients log onto Exchange Server at the same time. This configuration helps various user requests and writer and thus shouldn’t be merged in NTFS compressed partition. The compressed volumes can not handle heavy write traffic for the compression and thus does not support heavily loaded servers.

è MS Exchange Server writes all of the data to log files before writing it to disk as it supports transaction logging. If you’ve configured it to store files on compressed NTFS volume and Exchange Server alters data through mapped section in compressed file, the corruption might occur.

è Insufficient CPU (Central Processing Unit) capacity might cause problems to EDB file, if Exchange Server is deploying compressed NTFS volumes.

In any of such cases, if EDB file gets damaged, you need to opt for EDB Repair solutions. It is best possible with the help of third party software, known as EDB Recovery software.

These software are particularly designed to scan entire database and extract all of its inaccessible objects like emails, notes, contacts, calendar, tasks and personal folders. EDB Repair software are quite easy to use and do no require sound and prior technical skills to achieve absolute recovery. With read only and non destructive design, these software are completely safe to use.

Stellar Phoenix Mailbox Exchange Recovery is the best ever made and the most advanced EDB recovery software. It works well with Microsoft Exchange Server 2003, 2000 and 5.5. This software is compatible with Microsoft Windows 2003, XP and 2000. The software has self-descriptive user interface.