EDB Recovery Tool

Are you facing fatal errors while accessing your Microsoft Exchange Server 2007 database? Is your EDB (Exchange Server Database) file is inaccessible? The fatal error in Exchange server aborts the application and thus makes it unusable. This behavior of MS Exchange Server renders all your valuable data inaccessible and cause critical data loss situations. In order to get your precious data recovered in such situations, you need to repair and restore the damaged EDB file, using an EDB Recovery solutions.

As an example, MS Exchange Server 2007 Management Pack for Operations Manager supervises the MS Windows Application Event log on systems, which are running MS Exchange Server 2007 and returns the below event:

“Product Name: Exchange
Product Version: 8.0 (Exchange Server 2007)
Event ID: 17003
Event Source: MSExchangeTransport
Alert Type: Critical Error
Description: A Transport database operation has encountered a fatal error. The database may be corrupted. The Microsoft Exchange Transport service is shutting down. Manual database recovery or repair may be required.”

After the above error, Microsoft Exchange Server does not let you access your database. At this point, you have to verify the cause of this problem and perform EDB File Recovery by resolving it.

Cause:

The error message below indicates that specified ESE (Extensible Storage Engine) database is damaged. It is preventing MS Exchange Server services from starting.

- ESE, also called JET Blue, is an ISAM (Indexed Sequential Access Method) data storage technology intended by Microsoft. The ESE is particularly used as a key component of the Microsoft Exchange Server and the Active Directory.

How to Fix ESE Corruption:

You can carry out following things to sort out this issue-

1. Delete the defined database and corresponding transaction logs. You must not remove the database if you have significant data in the database.

2. Repair the damaged database using Isinteg.exe tool or restore it from backup.

However, if none of the above methods helps you to work around the problem, EDB Recovery Tool is the only option to go for. They carry out in-depth scan of entire EDB file using high-end scanning techniques and restore all database objects such as emails, notes, contacts, tasks, and more.

The software enable you to recover corrupt EDB file in a quick and easy way as they are incorporated with simple and self-descriptive graphical user interface. The integrity of your database is always preserved by these tools.

EDB Recovery Software is the most preferred recover EDB solution to repair and restore EDB files in all cases of corruption. The EDB Recovery is designed for Microsoft Exchange Server 2007, 2003, 2000, and 5.5.

Know More: How to Recover EDB File?

Unified Messaging (UM) is the integration of various communications media and electronic messaging technologies into a single store, while giving full access from different devices. The unified messaging products for Exchange Server have the capability to store all types of messages (like voicemails, faxes, e-mails etc.) in one system. The UM solutions for Exchange Server require Exchange database to be intact in order to get started. There can be situations when a unified messaging utility may stop. Apart from other reasons, you can deduce this behavior for database corruption. In such situations, if you don’t have any valid data backup, an EDB Recovery solution is required.

The following scenario will help you understand such problems better. Consider you deploy a Unified Messaging system in your Exchange Server environment. You observe that the UM utility cannot start. Later, you observe that Microsoft Exchange database is also unable to mount and reports an error, such as below:

The database files in this store are corrupted.
ID no: c104173b
Exchange System Manager.

You cannot mount the Exchange database at even further attempts.

Cause

The prime reason for the above error to occur is corruption of Exchange Server database.

This issue can also occur due to presence of old transaction log files in the folder.

Solution

You should try these solutions to overcome the existing problem:

• Execute Eseutil /R command to replay the transaction log files and perform soft recovery

• Remove the transaction logs from the folder and try to mount the database again. You can successfully rerun the UM utility once the database mounts

• Check for the database backup. If available, restore

• Run Eseutil /P command, followed by Eseutil /D and Isinteg commands. But this command deletes data and hence, is less recommended

• Use an EDB Recovery Software to repair the corrupted database and extract the valuable data

An Recover EDB application uses a powerful, yet safe, set of algorithms to repair the corrupted Exchange database. These repair applications are easy to install and use with interactive user design. You can use these utilities in any case of Exchange database corruption.

EDB Recovery Tool is an advanced utility that repairs corrupted or damaged Exchange database and restores the mailboxes in *.pst files. The EDB Recovery Software supports Exchange Server 5.5, 2000, 2003, and 2007. The software is easy to operate and can also recover deleted mailboxes. The tool is compatible with Windows 7, Vista, XP, 2003, and 2000.

More Exchange Server Resources

Exchange 2007 Recovery:
Exchange 2007 Recovery software recovers e-mails and other related items from the corrupted or damaged EDB and STM database of MS Exchange Server and restores mailboxes in distinct *.pst files.

Exchange 2003 Recovery: Exchange 2003 Recovery tool is an advanced Exchange database recovery utility and can recover all of the objects of EDB file in each and every case of corruption.

Exchange Mailbox Recovery: Exchange Mailbox Recovery software repairs corrupt .edb and .stm files of MS Exchange Server and recover user mailboxes with their respective emails and related items.

Exchange Database Recovery: Exchange Database Recovery software is designed and developed to recover emails from corrupted or damaged database files of MS Exchange Server.This tool restores individual mailboxes in Outlook-usable PST files.

Exchange User Profile Recovery: Exchange User Profile Recovery software Recover user Profile that is comprised in Exchange EDB file.

Stellar Information Systems Limited, 22-Jan-2010, Gurgaon, the pioneer data recovery company providing advanced EDB recovery solutions and services, today announced the launch of a new, updated version of its Exchange server repair solution- Stellar Phoenix Mailbox Exchange Recovery v3.0. With various end-user innovations, the upgraded Version 3.0 now repairs MS Exchange Server 2007 databases and also provides full native support for repairing Unicode EDB files. This release introduces a new deleted mailbox recovery feature and added capabilities that reduce costs and enhance the overall user experience.

Stellar Phoenix Mailbox Exchange Recovery v3.0 recovers STM data in e-mail body itself, which is a considerable improvement over its previous releases that used to recover it as an e-mail attachment. Also, the exchange recovery software now allows users to manually select the root Exchange Server version at ‘Select EDB File’ dialog-box with the added ‘Select Server Type’ option. The free demo version of the exchange server recovery product is available for download from company’s website that lists the mailbox(es) it can recover.

 “Stellar Phoenix Mailbox Exchange Recovery v3.0 is the unified package that delivers full versions’ compatibility, accidental deleted mailbox recovery, and multilingual data recovery support . Together with several conforming features, the update helps administrators to achieve long-term database control.”said Sunil Chandna, CEO of Stellar Information Systems Limited. “This release provides organizations a way to lessen the operational losses while Exchange database corruption. With several reworked features, Exchange Recovery v3.0 is designed as a cost-effective and time-saving solution”

New Features of Mailbox Exchange Server Recovery v3.0:

1. Supports MS Exchange Server 2007

2. Recovers deleted mailboxes

3. Supports Unicode-formatted EDB files

4. Recovers STM data as e-mail body for Exchange Server 2003, 2000, and 5.5

5. Allows to select Exchange Server type- a new ‘Select Server Type’ option

Pricing

Stellar Phoenix Mailbox Exchange Recovery v3.0 is an affordable edb recovery solution, available in three different license options- Administrator, Technician, and Academic. The product range starts at $499 for Academic License.

Stellar Information Systems

Stellar Information Systems Limited is industry’s leader in providing data recovery software, e-mail recovery tools, database repair solutions, file repair utilities, data safety products, and data recovery services. Certified with ISO 9001:2000 standard, Stellar has more than 1,100, 000 satisfied customers worldwide.

Contact Information

For more information and product purchase options:

Call : +1-866-554-2512 (TOLL FREE)
Mailto: orders[at]stellarinfo.com.
Web Address- http://www.edb-recovery.com

Single-bit error is a special case of CRC (Cyclic Redundancy Check) failure in Exchange Server database. The Error Detection Code or ECC that is included in the database page can fix such single-bit errors for a few (usually one or two) numbers. But if you experience single-bit error against a large number of database pages, the ECC doesn’t allow you to recover automatically. Such problems generally originate from hardware, firmware, or driver issues and is reported in the event log of server. You can address these problems by using a backup or applying Exchange EDB Recovery utilities.

Exchange single-bit errors are most likely to be reported while online backup or defragmentation. This is because while these operations, database is read at page-level and corruption also exists at page-level. For instance, you might encounter the below error message:

The database page read from the file ‘file_name’ at offset ‘offset’ (database page) for ‘number’ bytes failed verification. Bit ‘bit’ was corrupted and was corrected but page verification failed with error ‘error’. This problem is likely due to faulty hardware and may continue. Transient failures such as these can be a precursor to a catastrophic failure in the storage subsystem containing this file. Please contact your hardware vendor for further assistance diagnosing the problem.

This error is usually associated with -1018 error and is logged under event 398.

Error Explanation

The error suggests that the specific database page that has been referenced in Exchange database file such as Priv.edb is damaged. It occurs when CRC of a database page mismatches with that contained in this page. Exchange reports a fatal error when there is a multibit error.

Solution

You need these measures to solve the given problem:

1. Perform all system diagnostic tests and take the corrective measures

2. Use a different set of hardware if required

3. Upgrade the firmware or BIOS to the latest versions available

4. Perform EDB Recovery using eseutil /P and eseutil /D commands

eseutil /P is an unsafe command with respect to database integrity as it deletes corrupted pages. However, if you use an EDB Recovery Software that proves much safer to repair the corrupted database and extract the lost data.

EDB Recovery Software is an efficient utility that repairs corrupted Exchange databases and restores the mailboxes in individual *.pst files. The EDB Recovery Tool also recover deleted mailboxes. The tool is compatible with Exchange Server 5.5, 2000, 2003, and 2007. The software recovers STM data in e-mail body.

Microsoft Exchange Server databases suffer from two type of inconsistencies: Logical and Physical. Logical database corruption is caused due to reasons like deletion of Edb.log file and write-back caching, which generally introduce errors in B-trees and other logical structures. On the other hand, physical database corruption root from hardware failure like reasons that usually affect the database pages. Logical database corruption is hard to be detected by database administrator when compared to physical database corruption. However, at times when Exchange Server tries to read data from a corrupted database, it reports an error (as mentioned further). The corruption can be logical or physical and you need to apply EDB Recovery techniques to solve these problems.

As an instance, you might receive the below error message with your Exchange Server database:

 “msgidJetDatabaseCorrupted.”

This error is transient and under its description, you see the below error statement:

“Non-database file or corrupted database.”

Exchange Server logs this error in application event log with Event ID 9511.

The error suggests that Information Store service of MS Exchange Server is trying to read some data from a corrupted database or a non-database file. The database is logically or physically corrupted.

To solve the above described issue, you should check for more ESE events logging in Application log to determine the specific roots of this issue. You can also run Database Recovery Management tool, which is a part of Toolbox in Exchange Management Console, to get more assistance in this regard.

In order to solve corruption issues with Exchange database, you need to perform these steps:

1. Dismount the database that is affected from corruption

2. Backup the database

3. Perform database integrity check using eseutil /g command

4. Repair the database using eseutil /p command

In case, performing the above method results data loss or proves unable to repair the database, you need an third-party product for recover corrupt EDB file. The EDB Recovery software perform thorough database scan and result safe repair in each instance of database corruption. The software are easy to install and implement with self-explaining nature.

EDB Recovery Software is an advanced utility that repairs and restores corrupted Exchange databases. It is a safe database repair tool with highly rich graphic features. The EDB Recovery Tool supports Exchange Server 5.5, 2000 and 2003. This tool extracts all user mailboxes as *.pst files without modifying the original contents.

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.