exchange recovery

Like other databases, Microsoft Exchange Server database (EDB file) may also corrupt at some point of time and does not let you perform typical Exchange Server operations. The corruption can be of two types – Logical and Physical. Logical corruption is pretty common and occurs due to internal fault in the database. When it happens, Microsoft Exchange Server database becomes totally unusable and you encounter serious data loss. MS Exchange Server does not include any utility to detect and fix logical corruption. Thus, you are required to opt for Exchange Recovery to get your valuable data back.

You may encounter logical corruption of EDB file due to any of the following reasons:

1.If you incorrectly run the soft recovery using eseutil /r tool after restoring database from an online backup, it replays only log files and ignores the patch files. It may result in logical corruption. Extensible Storage Engine 98 does not let you run the soft recovery on an EDB file that needs hard recovery. In case you try this, the following Jet error appears in Application Event Log of Exchange Server:

“JET_errSoftRecoveryOnBackupDatabase (-544)”

2.If you initialize an inconsistent EDB file, the process checks whether that log range specified in database header is there in directory of log, and signatures of both log and database are correct. In case it does not find the specified values, it logs the below event:

“JET_errRequiredLogFilesMissing (-543)”

3.The database may also face logical corruption if you run eseutil /p utility. Jet-level Exchange Server database repairs result in some inefficient disk space uses and data loss, because it fixes the EDB file by deleting the corrupt data.

Resolution

To fix this problem and ensure effective Microsoft Exchange recovery, follow the underwritten steps:

1. Defragment the database using eseutil /d command and then run database integrity check using Isinteg -fix command.
2. Restore corrupt EDB file from the most recent backup. You should not run the soft recovery after restoring from backup as it may cause further damage.
3. Use third party Exchange recovery software to repair and restore the problem database.

The Exchange recovery tool is particularly designed to perform in-depth scan of entire EDB file and extract all inaccessible data from it. They offer simple and secure Exchange Server Recovery due to their rich graphical user interface and non-destructive nature.

Stellar Phoenix Exchange Mailbox Recovery is the most efficient and comprehensive exchange server recovery tool to offer exchange database recovery in all EDB corruption scenarios. It restores emails, contacts, tasks, notes, journal, attachments, appointments, and other EDB file objects. The exchange user profile recovery software works well with MS Exchange Server 2007, 2003, 2000, and 5.5.

For instance, you may run across the below error message when you attempt to mount an Exchange Server mailbox or public store after log file corruption:

“An internal processing error has occurred. Try restarting the Exchange System Manager or the Microsoft Exchange Information Store service, or both. ID no: c1041724”

At the same time, you may see any of the below events in Application Event Log of Microsoft Exchange Server:

1. Event ID: 465
Source: Ese98
Type: Error
Computer: Server1
Information Store (2184) Corruption was detected during soft recovery in logfile C:\Programme\Exchsrvr\mdbdata\E00000E8.log. The failing checksum record is located at position 6531:471. Data not matching the log-file fill pattern first appeared in sector 6600. This logfile has been damaged and is unusable.
For more information, click http://search.support.microsoft.com/search/?adv=1.

2. Event ID: 454
Source: Ese98
Type: Error
Computer: Server1
Information Store (2184) Database recovery/restore failed with unexpected error -501.

Subsequent to the above errors, you cannot mount the database and access stored data from it. In order to gain access of your valuable data, you must fix this problem through Microsoft Exchange recovery solutions.

Root of the problem:

This behavior generally occurs due to log file corruption or Exchange Server public store corruption. In both the situations, database can not be mounted and accessed.

Resolution:

You need to remove the log file and reboot Exchange Server, if problem is caused by log file corruption. On the other hand, if public store corruption is causing this behavior, you need to repair database using Exchange recovery software. The Exchange recovery tools successfully handle all corruption scenarios.

Stellar Phoenix Mailbox Exchange Recovery is a read-only software with simple graphical user interface to offer safe and easy recovery. The software works well with Microsoft Exchange Server 2007, 2003, 2000, and 5.5.

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For instance, you may come across any of the following behaviors after restoring the Exchange Server database from current backup:

1.You manage to restore the EDB file, but it single. There is no catalog data or transaction log file.
2.The Eseutil /p utility runs successfully on corrupt database, but it cannot be accessed.
3.You cannot check the state of your Exchange Server database using Eseutil /mh utility.
4.You get the following errors while checking the state of restored database:

a) Initiating FILE DUMP mode…
Error: Access to source database ‘c:\mailbox database.edb’ failed with Jet error -1022.
b) Operation terminated with error -1022 (JET_errDiskIO, Disk IO error) after 0.203 seconds.

When this behavior occurs, Exchange Server database becomes totally unusable and inaccessible. You encounter same behavior every time you try to open the database. In order to gain access of your valuable data, you need to figure out the root of this issue and perform Microsoft Exchange recovery by fixing it.

Cause

This behavior occurs due to missing log files or corrupt backup file. In both the cases, Exchange Server cannot access the source database and you face this issue.

Resolution

You can try resolving this problem using Eseutil /p command line tool or by restoring the database again from backup. If possible, move unaffected files from problem database to new database.

If the above method does not work, you need to repair and restore corrupt Exchange Server database using advanced and powerful third-party applications, known as Exchange recovery software.

The Exchange recovery tool is competent enough to systematically scan whole database and extract all inaccessible data from it. They come equipped with rich and interactive user interface to offer easy edb recovery from corrupted or damaged Exchange Server.

Stellar Phoenix Mailbox Exchange Recovery is the most efficient solution to effectively handle all sorts of database corruption issues. It works well with Microsoft Exchange Server 2007, 2003, 2002, and 5.5. The Exchange Recovery software successfully restores all EDB file objects, such as emails, notes, contacts, tasks, journal, attachments, and appointments.

As a practical case, when you try and mount the mailbox store in Microsoft Exchange Server 2003, you may not be able to do so. Additionally, the following event Ids may be logged in the Application event log:

Event Type: Error
Event Source: MSExchangeIS
Event Category: General
Event ID: 1112
Description: The database “Mailbox Store (Server Name)” has reached the maximum allowed size. Attempting to unmount the database.

Event Type: Warning
Event Source: ESE
Event Category: Space Management
Event ID: 445
Description: Information Store

The database D:\Program Files\Exchsrvr\MDBDATA\priv1.edb has reached its maximum size of 16383 MB. If the database cannot be restarted, an offline defragmentation may be performed to reduce its size.

Cause

The above situation surfaces when the .edb file of MS Exchange Server 2003 becomes corrupt after exceeding the size limit of 16 GB.

Resolution

In order to perform EDB Recovery, you must consider following steps:

A) In order to permanently avoid the problem, you must upgrade to Exchange Server 2003 Service Pack 2
B) Being the administrator, you can adopt the following steps:

1. Temporarily increase the database size limit by 1 GB, to enable this you must create the Temporary DB Size Limit Extension registry entry.
2. You can remove the not-so-significant database content
3. Go for offline defragmentation

In case, you are not able to overcome the problem, then you must go for a third-party Microsoft Exchange recovery software.

Stellar Phoenix Mailbox Exchange Recovery is an advanced software which repairs corrupt .edb files and recovers mailboxes as separate PSTs which can be directly imported in Outlook. Compatible with Exchange Server 5.5, 2000, 2003, and 2007, the Exchange Server Recovery software also performs recovery of deleted mailboxes.

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As a practical example of this problem, the hard recovery of Exchange Server with Eseutil /cc may fail and you come across the below error message:

“Operation terminated with error -939523485 (Existing log file is not contiguous.) after 0.481 seconds.”

At the same time, you may see any of the following Events in the Application Event Log of Microsoft Exchange Server:

1.Event Type: Information
Event Source: ESE
Event Category: General
Event ID: 101
Date: 8/30/2002
Time: 11:32:31 PM
User: N/A
Computer: ServerName
Description: Information Store (1504) The database engine stopped.

For more information, click http://search.support.microsoft.com/search/?adv=1.
2.Event Type: Error
Event Source: ESE BACKUP
Event Category: Callback
Event ID: 904
Date: 8/30/2002
Time: 11:32:31 PM
User: N/A
Computer: ServerName
Description: Information Store (1504) Callback function call ErrESECBRestoreComplete ended with error 0xC8000263 Existing log file is not contiguous.

For more information, click http://search.support.microsoft.com/search/?adv=1.

After this behavior, you may come across critical data loss situations. To retrieve data in such cases, you need to figure out the cause of this behavior and perform Microsoft Exchange recovery by fixing it.

Root of the problem:

You may come across this problem if the old log files are not in sequence with log, which is mentioned in the Restore.env file. You can file all the required log files using Eseutil /mh utility.

Resolution:

To fix this problem, follow the below steps:

1.View the content of Restore.env file using Eseutil /mh utility.
2.Record range of log files.
3.Remove the log files that are out of range.

If the above method does not work, you need to repair and restore the damaged Exchange Server database using third-party Exchange recovery software.

The Exchange Recovery tool are powerful enough to thoroughly scan entire database and extract all inaccessible data from it. They have rich and interactive graphical user interface to ensure easy recovery in all corruption scenarios.

Stellar Phoenix Mailbox Exchange Recovery is the most advanced and powerful exchange database recovery utility to offer assured recovery of damaged database. The exchange 2003 recovery software restores all EDB file objects, such as emails, notes, contacts, tasks, journal, attachments, and appointments. It works with Microsoft Exchange Server 2007, 2003, 2000, and 5.5.

Consider a scenario wherein you are not able to mount the Microsoft Exchange Server 2000. An error message is displayed, that is:

“The database files in this storage are inconsistent
Id no: c1041739”

You can also check the Application log to view the following event log:

“Event Type: Error
Event Source: ESE98
Event Category: Logging/Recovery
Event ID: 465
Date: Date
Time: Time
User: N/A
Computer: Computer_Name
Description: Information Store (2224) C:\Program Files\Exchsrvr\mdbdata\E00.log. Corruption was detected during soft recovery in logfile 4092:203. The failing checksum record is located at position 4117. Data not matching the log-file fill pattern first appeared in sector %6. This logfile has been damaged and is unusable.”

Cause:
The root cause of this error message is that the mailbox store database has corrupted and, thus, is in an inconsistent state.

Resolution:
In this case, the repair process involves two stages. The first one involves checking the state of the unmountable database whereas the second one is about repairing the database appropriately after confirming the database problem. To do this, you should perform the following steps:
1) Confirm the state of database by entering the following command in Command Prompt:
“eseutil /mh “drive:\program files\exchsrvr\mdbdata\database_file_name.edb”
2) If the database is consistent, then the following text will be displayed:
“State: Clean Shutdown”
3) Else if the database is inconsistent, then the following text will be displayed:
“State: Dirty Shutdown”
4) Rebuild the database using Eseutil command by entering the following command.
“eseutil /d /t:x “drive:\program files\exchsrvr\mdbdata\database_file_name.edb””
5) Repair the logical corruption of the database by using the following command:
“Isinteg –s exchange_server_name –fix –test alltests”

The aforementioned methods should be able to resolve the issue. However, if you are not able to address the issue then you should use a third-party Exchange Server recovery software to do so. Such read-only tools are able to perform EDB recovery without overwriting the original data.

Stellar Phoenix Mailbox Exchange Recovery is a Microsoft Exchange recovery software that recovers the corrupted EDB files from all instances of corruption. It is supported by Microsoft Exchange Server 2007, 2003, 2000, and 5.5. This Exchange Server Recovery software is able to extract the mailboxes into separate PST files according to the specific user. In addition, this Exchange recovery tool is able to preserve the formatting of the RTF and HTML messages. It is compatible with Windows 7, Vista, Server 2003, XP, and Server 2000.

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For better illustration, consider a case of a Microsoft Outlook user that tries to send or receive an e-mail message and Outlook is configured to use Microsoft Exchange Server. When he/she tries to do so, one of the below mentioned error messages is received:

“Task ‘Microsoft Exchange Server’ reported error (0×8004011B): ‘Unknown error 0×8004011B”

As a result of this error message, Outlook user can no longer send or receive more e-mails.

Explanation

The above issue is most likely to occur in any of the following situations:

• You have installed Microsoft Outlook 2003 on Exchange 2003 Server or domain controller
• Microsoft Outlook profile is damaged
• An antivirus software or firewall is running that has prevented the connection of Microsoft Outlook and Microsoft Exchange Server
• Corrupted Exchange Server database

User Action

If you encounter the depicted problem, you should consider to implement the following measures:

• You need to modify the security settings if Microsoft Outlook 2003 installation n Exchange. 2003 Server or domain controller is the issue. For this, change the security settings from ‘ log on network security’ to ‘Kerberos’.
• If Outlook profile is corrupted, you can recreate the profile and delete the affected one
• You should check the compatibility of your antivirus software with Microsoft Outlook 2003 and Microsoft Exchange Server 2003. Also, you can disable all antivirus programs running at server and client ends. In case of firewall issues, you might require to enable static port mapping.
• In case of Exchange database corruption problem, run Eseutil and Isinteg utilities after taking a complete backup. If this doesn’t help, you need to use a third-party Exchange Recovery Tool. Running an Exchange Server Recovery software can help you extracting database contents in readable format.

Stellar Phoenix Mailbox Exchange Recovery is a comprehensive utility designed to repair corrupted Exchange database and restore its mailboxes as individual *.pst files. This Exchange Recovery tool supports MS Exchange Server 2007, 2003, 2000, and 5.5 and is also competent to restore deleted mailboxes. The tool is compatible with Windows 7, Vista, XP, 2003, and 2000.

Computer Support

Here, the mentioned problem has been narrowed down with the below error message. You can see this or similar error message logging in application event log with an associated event ID 448:

Information Store (2412) Data inconsistency detected in table Msg of databaseE:\Program Files\exchsrvr\mdbdata\priv4.edb (0,524957). For more information, click http://search.support.microsoft.com/search/?adv=1

You can encounter this error message when trying to start Exchange Server, which occurs because mailbox store(s) cannot be mounted. Microsoft Exchange Server detects inconsistency in one of the Jet database table.

Note: Exchange Server database can get corrupt because of antivirus scanning, corrupted restore operation, damaged hard disk subsystem, and the like reasons.

User Action

1. Check the system log for determining possible hardware, file system, or driver related problems. If you find any such errors, take the corrective measure like, replace the hardware, repair the file systems, and update drivers.
2. Check whether or not database can mount. If it can, you can export its data to .pst files using ExMerge utility and then delete the corrupted database. If it cannot, you should restore it from last online backup, run eseutil /p repair utility followed by eseutil /d and isinteg utilties, or use a third-party Exchange Recovery Tool.

Microsoft Exchange Recovery software are more effective plus safer programs over Exchange eseutil repair utility. While eseutil /p command can delete the database pages, these software repair the database and extract its content without affecting the original database, and maintaining the same formatting and view.

Exchange Recovery Software is a comprehensive edb recovery tool designed for repairing a corrupted Exchange database that can extract user mailboxes as .pst files to a user-intended location. Supporting MS Exchange Server 2007, 2003, 2000, and 5.5, this easy to use Exchange Server Recovery tool can also recover deleted mailboxes.

In a practical scenario, you cannot start the Exchange Server services after installing Microsoft Exchange Server 2007 on the global catalog server. But, other services can be started manually. Furthermore, you may see the below events in the Event Log of Exchange Server:

• Event ID: 2601
  Source: MSExchange ADAccess
  Category: General
  Type: Warning
  Description: Process MSEXCHANGEADTOPOLOGY (PID=1624). When initializing a remote procedure call (RPC) to the Microsoft Exchange Active Directory Topology service, Exchange could not retrieve the SID for account <WKGUID=DC1301662F547445B9C490A52961F8FC,CN=Microsoft Exchange,CN=Services,CN=Configuration,…> – Error code=80040934. The Microsoft Exchange Active Directory Topology service will continue starting with limited permissions.
• Event ID: 5000
  Source: MSExchangeIS
  Category: General
  Type: Error
  Description: Unable to initialize the Microsoft Exchange Information Store service. – Error 0×96e.

Exchange Server is partially dependent upon Microsoft Exchange System Attendant. Exchange Server Information Store service is not dependent upon Microsoft Exchange System Attendant.

Cause

The problem may occur, if:

• Exchange Server domain controller and other services don’t start completely.
• Exchange Server database is corrupted.

Resolution

To perform Microsoft Exchange Recovery, follow the given steps:

• Manually start Exchange services.
• Change Exchange Server dependencies.
• Use Exchange Recovery Software to repair and restore damaged EDB file of Microsoft Exchange Server.

The Exchange Recovery tool are capable of methodically scanning the damaged Exchange Server database and extract all inaccessible data from it. The software are totally safe and easy to use with read-only nature and interactive user interface.

Stellar Phoenix Mailbox Exchange Recovery software repairs and restores damaged Exchange Server database in all cases of corruption. The software works well with Microsoft Exchange Server 2007, 2003, 2000, and 5.5. It restores all EDB file objects, such as emails, notes, contacts, tasks, attachments, appointments, and more.

In a practical scenario, you may come across the below symptoms when the Exchange Server Information Store gets damaged:

1. Currently logged on Exchange Server users identify that their systems stop responding.
2. The utilization percentage of the Information Store becomes very high (for instance, 70%).
3. When you apply the ISINTEG (Information Store Integrity Checker) tool on damaged Information Store, the process stops responding halfway. The tool fails to check the integrity of Exchange Server.
4. When you apply the EDBUTIL utility, which repairs the Exchange Server database, this process also stops responding midway and may show which database table is causing the problem.

In this scenario, entire EDB database become inaccessible. In order to gain access of the database, you need to find out the actual cause of this behavior and perform Microsoft Exchange Recovery by sorting it out.

Grounds of the problem:

You may face this issue if internal pages of Exchange Server database table are damaged. The corruption can be caused by various reasons, like application malfunction and virus infection.

Resolution:

To sort out this problem, you need to restore the database from current backup. Go through the below steps to restore EDB database:

1. Click Start button, and go to Programs-> Accessories-> System Tools-> Backup.
2. Click Restore tab.
3. Select the objects from the file that you need to restore.
4. In Restore files to dialog box, select option that you wish.
5. Click Start Restore button.

If the backup is not available, you are required to go for third-party Exchange Mailbox Recovery software to extract inaccessible data from the database. They enable you to methodically scan entire database and recover all data from the database. The Exchange Recovery Tools do not demand sound and prior technical skills as they have interactive graphical user interface.

Exchange Mailbox Recovery is the most advanced exchange database recovery utility that successfully handles all types of Exchange Server database scenarios. The Exchange Recovery software is designed for Microsoft Exchange Server 2007, 2003, 2000, and 5.5. It recovers all EDB file objects, such as emails, contacts, notes, attachments, appointments, journal, and calendar items.

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.

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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.

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.

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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 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.

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.

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.

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.

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.

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