Microsoft Exchange Recovery Tool

Faulty hardware is one among the most common causes of Exchange Server database corruption. If your application event log frequently records events that point to database damage issues, your hardware is most likely to be replaced. Such situations however, demand Exchange Server Recovery tools to correct the issue.

Let’s elucidate the related problems by taking a suitable example of following event ID.

Event Type: Error
Event Source: ESE
Event Category: Database Page Cache
Event ID: 476
Date: date
Time: time
User: user_name
Computer: computer_name
Description:

Affected_Component The database page read from the file “file_name” at offset offset for number_bytes bytes failed verification because it contains no page data. The read operation will fail with error error_number. If this condition persists then please restore the database from a previous backup. This problem is likely due to faulty hardware. Please contact your hardware vendor for further assistance diagnosing the problem.

Event 476 is linked with a -1019 error in the event log.

Cause

Database read operation has failed. Particularly, this indicates that the specified database page that has been mentioned in database file, for example pub1.edb, is empty and has no data when it is being anticipated to be in use.

Error -1019 corresponds to ‘JET_errPageNotInitialized’ or an empty database page. This can occur due to invalid links between database pages, file system inconsistencies, or pages that have been mapped but are not associated with the database file.

Though ordinary hardware diagnostics might fail to detect the problems, but most of these issues happen because of device drivers, firmware, and hardware related concerns.

Solution

Get the new hardware and use one of the below methods:

• Use Move Mailbox tool by installing another server and move all the mailboxes
• Run Exmerge utility to obtain all mailboxes as *.pst files
• Restore the database from backup
• Repair the database using Eseutil/p and Isinteg -fix commands
• Use a third-party Microsoft Exchange Recovery tool

Note: A third-party Exchange Server Recovery application is more safer than Exchange hard repair utility- Eseutil/p. The latter utility can delete the database pages and cause serious data loss.

Exchange Mailbox Recovery is a professional tool designed to repair corrupted Exchange Server 2007, 2003, 2000 and 5.5 database and extracts the mailboxes in individual *.pst files. This Exchange Recovery software can also recover deleted mailboxes and can restore all e-mails, notes, contacts, calendars, tasks, appointments, etc.

Resources:

1st Download Center – Shareware download site, try for free, multiple categories to choose from.
IT Shareware – Shareware download site, try for free, multiple categories to choose from.

Is your Exchange Server delivering outgoing mails without attachments? Are you unable to see attachments in your Exchange Server mailbox? Do you encounter ESE (Extensible Storage Engine) errors while accessing the EDB (Exchange Server Database) file? This behavior indicates Exchange Server database corruption. You need to go for Exchange Server Recovery to get your database repaired, if an updated and complete backup is not in place.

In a practical scenario, you may see the below even log entries in the Application Event Log of Exchange Server:

“Date: date Source: ESE
Time: time Category: Database Corruption
Type: Error Event ID: 447
User: N/A
Computer: Server name
Description: Information Store (nnnn) A bad page link (error -338) has been detected in a
B-Tree (ObjectId: 70950, PgnoRoot: 157120) of database e:\Program
Files\exchsrvr\mdbdata\priv1.edb (157120 => 296404, 296403).”

The above problem may render your database completely inaccessible. You cannot access your precious emails, notes, contacts, tasks, journal, calendar entries, and other mailbox items. In order to gain access of your data, it is essential to identify the actual cause of this issue and perform Microsoft Exchange Recovery by sorting it out.

Grounds of the issue:

This behavior may occur due to the following possible causes:

• The transactions are not committed to the hard drive by Disk Caching and the Exchange Server is crashed or stopped responding.
• Wrong log files are replayed while restoring the database.
• Exchange Server hard drive is having logical problems, like operating system malfunction, virus infection, file system corruption, and more.
• The database is corrupted due to improper system shutdown, virus infection, application crash, and other such reasons.

Resolution

In order to work around this issue, go through the below steps:

• If your hard drive has logical problems, run ChkDsk utility to detect and fix hard drive related errors.
• In case of database corruption and other database related issues, run DBCC CHECKDB.

However, if the database corruption cannot be fixed by DBCC CHECKDB due to high extent of damage, you need to use third-party Exchange Recovery Software. They work in most of the database corruption situations.

The Exchange Recovery Tools methodically scan entire database and restore all of its inaccessible and damaged components. With read-only conduct and simple graphical user interface, they are totally safe and easy to use.

Exchange Recovery is the most advanced utility for assured recovery of damaged EDB file. The software is able to restore all EDB file objects including emails, notes, contacts, tasks, schedules, attachments, and more. It is designed for Microsoft Exchange Server 2007, 2003, 2000, and 5.5.

In several Exchange database operations, like (but not limited to) backup process, the operating system is called to read database pages that have to be written on disk. During this operation, the checksum value placed in database page header is compared with that returned by READ operation. The backup operation fails if these values do not match. Such errors indicate corruption in database and need backup availability to restore lost data. But in cases when user finds it unfeasible to restore from backup (because it is corrupted or incomplete), a Microsoft Exchange Recovery tool can help.

To depict the probable events, let’s take a related scenario of an Exchange Server 2003 user. When he runs a backup utility to copy the Exchange database, the operation halts with an error that reads:

“Database was not found and could not be backed up. Please make sure database exists and is mounted.”

The logs also consist of errors such as:

“Store_Name is a corrupt file. This file cannot verify.”

Or

“Access is denied. Access denied to database Mailbox Store.”

On exploring the application event log, it shows error -1018.

Cause

The root cause of the above behavior is corruption of Exchange mailbox store, most likely due to hardware issues. These errors cause checksum errors in database pages.

Solution

To resolve the problem:

1. You need to run system hardware diagnostics to find the root cause and then isolate the related issues.
2. User can create a new mailbox store and move the mailboxes from the corrupted store, to correct the database problems.
3. You can also try repairing the corrupted database using Eseutil/p repair utility. However, this command is often unrecommended because it deletes the corrupted database pages and can cause important data to delete.
4. And, for safe database repair, use an Exchange Recovery Tool. Designed to run safe scanning procedures, these Microsoft Exchange Server Recovery software can repair corrupted database and extract valuable data.

Exchange Recovery Software is a professional exchange repair tool built for fixing corruption with Exchange databases created with MS Exchange Server 2007, 2003, 2000, and 5.5. The software recovers deleted mailboxes and includes various advanced options. Compatible with Windows 7, Vista, XP, 2003, and 2000, this Exchange Server Recovery Tool extracts mailboxes in separate *.pst files.

SEO Results

7285b4aa8b33415aa5a6e087d46826c5

Unmountability of a Private Information Store (priv.edb and priv.stm files) primarily occurs when it is corrupted. One of the main reasons for it corruption is improper upgradation from Microsoft Exchange Server 5.5 to 2000. A major hazard that users encounter after improper upgradation is a series of Event Ids, which make the data saved in the private Information Store become inaccessible. In such situations, an effective way to access Private Information Store data is by using an updated backup. However, there are numerous circumstances in which the user has either not created any backup or his backup gets corrupted. To surmount such situations, you need to use an advanced third-party Exchange Server Recovery software that can repair the database.

As a practical instance, you migrate your Exchange Server 5.5 database to Exchange 2000. However, after the migration process is complete and you attempt to access the database, you encounter the below series of Event ids:

“ErrorID: 9519 Error 0xfffff9bb starting database “First
Storage Group\Private Information Store (SERVIDOR3)” on
the Microsoft Exchange Information Store.
Failed to configure MDB.

ErrorID: 1127 Error 0xfffff9bb configuring the
database “First Storage Group\Private Information Store
(SERVIDOR3)”.

)ErrorID: 1187 Database “First Storage Group\Private
Information Store (SERVIDOR3)” could not be upgraded to
version 3.2. Error 0xfffff9bb.

Error ID: 9545
ailbox /OúCILITY/OUúSNET/CN=RECIPIENTS/CN=CLIENTES
could not be found in the Active Directory during upgrade.
It has been issued GUID b035eb8b-de9a-47c6-b1f5-
309b01fcd514 and is currently disconnected.
You will need to reconnect the mailbox before allowing
the user to log on.

Error ID: 9175 The MAPI call ‘OpenMsgStore’ failed with
the following error:
The attempt to log on to the Microsoft Exchange Server
computer has failed.
The MAPI provider failed.
Microsoft Exchange Server Information Store
ID no: 8004011d-0512-00000000”

Post the occurrence of above event ids, the data saved in the Exchange Server Database becomes inaccessible.

Resolution:

The above event ids can be resolved by repairing the corrupted Exchange Server database. To effectively do so, you will need to run ESEUTIL/P command.

While in many situations, your database gets repaired using the above utility. However, if it doesn’t then you need to opt for an Exchange Server Recovery software. An Exchange Recovery software comprehensively repairs corrupt/damaged Exchange Server database in just three simple steps.

Exchange Recovery Tool is a powerful utility that repairs Exchange Server databases with ease. The repaired database is stored in a PST (Personal Storage) file format. The read-only Microsoft Exchange Recovery software is compatible with Exchange Server 5.5, 2000, 2003, and 2007.

In Microsoft Exchange Server, you can check and fix the integrity and consistency of Information Store database using Isinteg.exe utility. This built-in command-line tool works on all information store databases such as public information store, Pub.edb, and private information stored, Priv.edb. However, in some cases, you encounter errors while trying to resolving information stored database issues in Exchange Server, and the process fails. The problem persists and you can not access data from Exchange Server database. This behavior leads to data loss and need Exchange Server Recovery to be sorted out.

In a practical scenario, you may come across the below error message when you run the Isinteg -patch on MS Exchange Server that is running on Microsoft Cluster Server:

“The private store could not be updated
Reason: JET_errKeyDuplicate”

Before running the Isinteg -patch tool on Microsoft Exchange Server computer, which is running on the Microsoft Cluster Server, it is essential to set environment variable _CLUSTER_NETWORK_NAME_ to ERG (Exchange Resource Group) name. For instance, when the ERG network is named as EXCLUSTER, type the below as command prompt:

SET_CLUSTER_NETWORK_NAME_=IP ADDRESS NAME

• Here IP ADDRESS NAME is name assigned to IP ADDRESS resource in Exchange Resource Group. It is essentially NetBIOS name of exchange Server computer.

In such circumstances, the Isinteg utility fails after restore the database, which was forklifted from the stand-alone Exchange Server computer to the clustered Exchange Server computer.

The failure occurs if the value of _CLUSTER_NETWORK_NAME_ environment variable is incorrect. It can be due to typographical errors. After the environment variable is set, you can not change it.

If you have incorrectly set the environment variable on your Exchange Server database, the database corruption or inaccessibility situations may occur. In such circumstances, you must perform complete restore of the database as you can not change cluster name in information.

Inaccessibility of the Exchange Server Database (EDB) file leads to data loss situations and need Exchange Recovery to be sorted out. Recovery is best possible with the help of powerful and advanced third-party EDB Recovery Software.

These applications are particularly designed to carry out in-depth scan of entire EDB file and extract all damaged, inaccessible, and corrupted mailboxes. The Exchange Recovery tools have read-only and non-destructive conduct to retrieve your data safely.

Microsoft Exchange Recovery is a comprehensive edb recovery tool and ensure absolute recovery of all EDB file objects including emails, notes, contacts, tasks, journal, and more. The software works well with Microsoft Exchange Server 2007, 2003, 2000, and 5.5.

Microsoft Exchange Server 2007 includes several data security and database improvements that give an appearance of a relatively safer application. The prime enhancements that this version provides are extended database size limitation up to 16 TB, increased number of storage groups per server, improved antivirus, anti-spam protection, and more. Despite of these improvements, Exchange database corruption is not an exception. An Exchange Server 2007 database is vulnerable to get corrupt because of Dirty shutdown, application issues, and the like common causes. The prime solution to deal with such problems should be use Exchange repair utilities or to restore from backup. But if none of these measures works, you require an Exchange Recovery utility.

Consider the following practical example of such problems. You use Exchange Server 2007 and observe database corruption with the following symptoms:

• You try to copy the database, but the copy operation fails reporting an I/O error in system log, such as below:

The driver detected a controller error on \Device\Harddisk0\DR0.

• When you try to move a mailbox from the corrupted store to a new one, it cannot be accomplished with an error similar to below:

Unable to move mailbox mailbox_name.
A problem occurred while getting the properties for a message.
Parent folder name: Inbox; Message subject: RE: SND253P1 ; Error code: 0xfffffa0a.
Run ISINTEG to check for any problem in the database “First Storage Group\Mailbox Database

• As suggested by the above error, when you run ISINTEG utility to check the database consistency, you receive the below error:

MSExchangeIS (3932) First Storage Group: Data inconsistency detected in table table_num of database database_path

Also, the ESEUTIL /p repair operation fails to fix the database corruption.

Such situations indicate database corruption to an extent that it cannot be repaired and dealt using MS Exchange utilities. To extract the mailboxes, you need solutions like:

1. A database backup that can be used to restore.
2. A third-party repair Exchange Server Recovery utility that can repair and restore the database contents. An Exchange Recovery utility can use effective, yet safe, scanning algorithms to recover the lost data in intact form.

Exchange Recovery Tool is a professional utility with ability to recover mailboxes from a corrupted Exchange database in individual *.pst files. The Exchange Server Recovery application supports Exchange Server 2007, 2003, 2000, and 5.5. The tool also supports recovering deleted mailboxes and STM file data in an e-mail body.

Exchange Server database corruption can occur for several reasons and if backup is present that is stable, you can use it to restore the database conveniently. A database backup alone is not sufficient to bring the database back to consistent state. It is because after restoration, database and log files are not in perfect sync with each other. So, you need to replay the transaction files in order to make the database consistent. This process is termed as ‘Hard Recovery’. The hard restore requires all backup sets to be in clean state or otherwise, this procedure may fail. In such instances, you left with no alternatives other than using an Exchange Server Recovery utility that can repair the original database.

As example, consider an instance when you experience dirty shutdown with Microsoft Exchange Server. The next time, when you try to mount the Information Store database(s), it fails and you receive errors suggesting that one or more database(s) are corrupt. You try to perform hard restore, but cannot do so and receive the below error message:

“JET_errLogCorruptDuringHardRestore -573”

The database recovery method fails and data remains inaccessible.

Cause

Error -573 indicates that Exchange Server has detected some corruption in a backup set and cannot proceed.

Solution

You can try applying these solutions to solve such problems:

1. Check for some other backup set that may be used to restore the database and carry out hard restore

2. Run ‘ESEUTIL /P database_filename.edb’ command to repair the database, where ‘database_filename’ is the name of the corrupted database file. But during repair, the command can discard table rows and even complete tables. So, it is suggested to backup the database and later, opt for safe third-party Exchange Server Recovery solutions if you find the important data missing after repair or the repair process fails.

Exchange Recovery software are result-oriented tools to that repair EDB files using safe and effective scanning algorithms. These products are applicable in each case of database corruption. You can install these products easily and then operate them using simple steps as described by the software itself.

Microsoft Exchange Recovery is a powerful EDB Recovery utility that repairs corrupted Exchange database files and restores the mailboxes in individual *.pst files. The Exchange Recovery tool supports MS Exchange Server 5.5, 2000, 2003, and 2007. The tool can also recover deleted mailboxes. The software is compatible with Windows 7, Vista, XP, 2003, and 2000.

Transaction logging is a disaster recovery procedure of Microsoft Exchange Server that helps the database to get restored in consistent state after any unexpected stop. When the database stops suddenly, it goes to inconsistent state. On next restart, Exchange Server locates and then scans the log files to apply them from the database file. But for any reason if it fails to locate those log files, the recovery attempts fail. This forces you to locate the missing log files manually. However, if it cannot be accomplished, you need to restore the database from a suitable backup or perform Exchange Server Recovery using appropriate database repair procedures.

For each event in Exchange Server, the application logs the associated entry in Windows Application log. So, you might encounter the following error message displaying in this application log, usually after unexpected stop:

“Database requires log files that could not be located. The database requires log files to continue. Make sure the log files exist. Check Event logs for more information.”

The event ID of this error in 453 and can cause database to become unmountable.

Cause

Exchange database needs some log files that it could not locate to continue. For further information on which log files could not be located, you can see the event description which mentions the sequence of log files that it could not locate. It also includes the log file number, up to which recovery has been possible.

Some prime reasons that might prevent log files from being located are:

1. The temporary folder doesn’t contain the log files. The transaction logs are missing.

2. An anti virus software is running that has quarantined the log file

3. A hardware failure that has caused log files to lose.

Solution

You need to apply these measures to solve the existing problem:

1. Check if the required log files have been moved. If yes, move them back to the correct folder. But if they have been deleted, you need to restore from the backup.

2. You need to stop the antivirus scanning if any and examine its registry settings to put back the current log files to correct folder.

3. If none of the above measures work, you should restore the database from the backup or apply eseutil repair (hard recovery) utilities to repair the database.

Eseutil hard recovery is not safe to use as it deletes the corrupted pages. Thus, you are suggested to use commercial Exchange Recovery utilities as a better option. The Exchange Recovery software are suitable choice to repair corrupted Exchange database using safe, yet effective, scanning algorithms.

Exchange Recovery Software is a powerful EDB Recovery tool that repairs corrupted Exchange database and restores the mailboxes in *.pst files. The Microsoft Exchange Recovery tool supports MS Exchange Server 5.5, 2000, and 2003. The software is easy to install and operable using simple steps that even a non-tech user can understand.

Microsoft Exchange Server first passes data to the operating system and then, depends on the installed device drivers and hardware to keep this data securely. In case, these lower layers fail to provide required protection to data, your Exchange database might become corrupt. This form of database corruption is counted as the most severe one since it lacks the ability of get repaired and compel you to restore the database from backup or delete the corrupted data using Eseutil hard recovery techniques. Another alternative can be to use an Exchange Server Recovery utility that provides mailbox extraction from the corrupted database.

Most of the physical database corruption errors are detected by Exchange Server while operations like taking an online backup or performing database maintenance. This is because during these operations, the database engine undergoes page-wise testing of database. As a result, it logs similar errors, as mentioned below, in application event log:

1. “-510 JET_errLogWriteFail”

2. “-1022 (JET_errDiskIO)”

Cause

Each Exchange database has a 40-byte header information that stores a page number a CRC (Cyclic Redundancy Check). The database engine first determines the page number to ensure the requested one and then, checks the CRC value when reading the database page. If either of these checks fails, an error is returned, as above.

Before declaring the corrupt page, the database engine attempts to read it up to 16 times. These error indicate that either the page is bad or the database engine has failed in its trials without any success. You cannot backup the database in such cases and the operation is aborted.
Solution

You can avoid such problems by configuring a suitable hardware, device drivers, and firmware. Possible solutions to these problems are:

1. Restore from a backup, if is available and valid

2. Run eseutil /r command to find and remove bad pages from the database

The lost database pages might contain data that is important. For example, if the deleted page contains a B-tree index, it can render a considerable database part to become useless. To prevent from such situations, it is however, recommended to opt for safer Exchange Recovery solutions. The Microsoft Exchange Recovery software use intensive, yet safe, scanning algorithms to repair and restore the corrupted Exchange database.

This Exchange Recovery Software is a reliable tool that repairs corrupted Exchange database and restores the mailboxes in *.pst files. The Exchange Recovery utility supports MS Exchange 5.5, 2000, and 2003. The tool has an interactive interface that makes the software easy to operate. The tool is compatible with Windows 7, Vista, XP, 2003, and 2000.

Exchange data fragmentation occurs within the database. To reduce its effect, Exchange Server includes a default defragmentation process (called online defragmentation) on daily basis as a part of regular maintenance process. Also, the application provides an offline defrafgmentation technique, which is accomplished by eseutil /d command. Both of these methods discard the unused space, but occasionally introduce some database errors that cause database to corrupt. To repair such corrupted databases, you need to apply eseutil repair commands or restore from the last available backup. However, if these measures don’t help, you should repair the corrupted database using an Exchange Recovery Tool.

For instance, consider the following practical scenario. You try to defragment the Exchange database (*.edb) with eseutil /d command, but the process fails while it is defragmenting the database. After this, you observe that the file in effect is named as *.edb.edb. You rename it to *.edb, but Exchange Server refuses to mount it further.

When you try to perform soft database recovery, you get an error message, as below:

“Checking database integrity.Operation terminated with error -1206 (JET_errDatabaseCorrupted, Non-database file or corrupted db) after n seconds”

The database is inaccessible .

Cause

The EDB file is severely corrupted and cannot be mounted.

Solution

You can try to implement the following suggestions to solve the described issue:

1. Restore from the last backup you have.

2. If the soft recovery has failed, you can use hard recovery command- eseutil /r. Make sure you backup the file first. It is the hard command and usually deletes the corrupted pages that it cannot understand.

3. If the above solutions are not valid, you should use a third-party database repair utility. Such software can easily repair a corrupted EDB file without harming the original integrity of the file.

Microsoft Exchange Recovery tools are specifically designed products with high competency to repair a corrupted Exchange database. An Exchange Server Recovery utility has a self-explaining interface and suitable documentation. They can repair a database corrupted due to any logical instance. For this, the software apply a powerful set of scanning procedures, which are also safe for the database originality.

Stellar Phoenix Mailbox Exchange Recovery is a powerful solution that repairs and restores damaged Exchange databases in each case. The Exchange Recovery Software supports Exchange Server 5.5, 2000 and 2003. It is a safe database repair tool with various user-end graphic features. The tool recovers all user mailboxes in individual *.pst files, which can be imported in Outlook.

Directory

Data Recovery