Posted on Thursday, June 24, 2010 at 9:32 PM
In Microsoft Exchange Server, you must replay the log file after restoring your EDB (Exchange Server database) from an online backup. This process is known as Hard Recovery. It helps you to recover your Exchange Server database in case of database corruption or database failure. However, in some situations, the Exchange Server hard recovery fails and the database remains in inaccessible and unusable state. At this point, you need to repair and restore the corrupt database using advanced
Exchange recovery tools.
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...
Posted on Thursday, May 27, 2010 at 10:10 PM
In Microsoft Exchange Server, you are required to to perform hard recovery after restoring your database from an online backup. Hard recovery is a log replay process, which is similar to the soft recovery, however there are a few critical differences. If you do not complete the hard recovery process after restoring the database from backup, the restore process is not successful. In some situations, the hard recovery process fails and your database remains inaccessible even after restoring from an online backup. This behavior causes severe data loss and requires
Exchange Recovery to be sorted out.
As a practical instance of this behavior, the hard recovery process may not complete successfully with eseutil /ff command after restoring Exchange Server database (EDB file) from online backup. Additionally, you receive underwritten error message:
"Operation terminated with error -939523485 (Existing log file is not contiguous.) after 0.481 seconds."...
Posted on Tuesday, May 25, 2010 at 11:31 PM
Exchange Server is the server side application from Microsoft to create a collaborative messaging environment. It is made of various components, and Exchange Server Information Store is a significant one among them. All the database components work together to perform required operations and keep Exchange Server up. However, there are several factors that can damage the Exchange Server components and may make it unusable. This behavior renders your Exchange Server database (EDB file) inaccessible and cause severe data loss. To recover lost data at this point, you must go for
Exchange Recovery solutions, if a valid backup is not available.
When Exchange Server database corruption takes place, Exchange Server Information Store is the most commonly affected components. Microsoft Exchange Server Information Store comprise of the below four database files:
1.Priv1.edb
2.Pub1.edb
3.Priv1.stm
4.Pub1.stm
...
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Error 4294966746,
JET_errDatabaseInconsistent,
Priv1.edb
Posted on Sunday, May 09, 2010 at 10:23 PM
Among other reasons, one of the most common reasons that can prevent an Outlook user from sending and receiving e-mails is Exchange Server database corruption. In such circumstances, the Exchange administrator should immediately restore the database from last available backup, failing which raise the requirements of using suitable
Exchange Recovery utilities.
For better illustration, consider a case of a Microsoft Outlook user who 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 (0x8004011B): 'Unknown error 0x8004011B”
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:...
Posted on Thursday, April 15, 2010 at 5:02 AM
Is your Microsoft Exchange Server's Information Store damaged and does not start? Are you unable to retrieve information from EDB (Exchange Server Database) file? The information store corruption is due to numerous reasons, such as improper system shutdown, faulty hardware, virus infection, or application malfunction. In such situations, you need to opt for
Exchange Server Recovery to access your database.
To recover Microsoft Windows Store that doesn't start, use the below methods:
1. Check Application Event Log of Windows NT Event Viewer for MSExchangePub, MSExchangePriv, EDB, and MSExchangeIS messages. The messages may provide you information about actual cause of the problem.
2. Shut down all the MS exchange Server services, and then restart Exchange Server. When information store service restarts, it attempts to recover automatically and return database to consistent state...
Posted on Friday, February 19, 2010 at 10:34 PM
In Microsoft Exchange Server, you can perform hard recovery to retrieve missing or inaccessible data. Such recovery is performed after restoration from online backup, in case of serious database corruption. Hard recovery is the process of replaying a log file, which is similar to the soft recovery. In some cases, the hard recovery can not be completed successfully and the database remains inaccessible and unusable. At this point, you need to go for
Exchange Recovery to get your mission critical and precious data back.
In a practical scenario, when you attempt to carry out the hard recovery of Microsoft Exchange Server, you might come across -1019 error message. After this error message, you may find the following Event IDs in Application Event Log of Microsoft Exchange Server:
Event ID: 0
Source: ESE97
Type: Error
Category: Performance
Description: (252) Unexpected Win32 error: 0x3E6
Event ID: 122...
Posted on Wednesday, February 17, 2010 at 11:34 PM
One of the common reasons for Exchange Information Store to get corrupt is hardware issues. Thus when you identify server consolidation for Exchange Server computer, experts suggest you to adhere to Windows Server Catalog tips. The most important is a reliable storage subsystem and that's the reason you are often recommended to use Redundant Array of independent Disk (RAID) configuration. This not only increases performance by allowing multiple I/O operations but also adds to reliability. But unfortunately there can still be instances that may bring corruption to message store. If one or more of RAID components fail, the Exchange Information Store can catch corruption. In such situation, you need an
Exchange Server Recovery solution to repair the database and recover the lost data...
Posted on Tuesday, February 16, 2010 at 10:47 PM
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”...
Posted on Tuesday, January 26, 2010 at 10:57 PM
There are some situations, such as virus infection, improper system shutdown, application malfunction, and missing database objects, where the Exchange Server Database (EDB file) may get damaged and all of the stored data become inaccessible. To handle such situations, Exchange Server includes a repair utility called Eseutil. It can detect errors, repair them and defragment the hard drive. But this utility can not handle the situation in case of severe damage and you encounter data loss situations. At this point, you are required to go for
Exchange Server Recovery solutions.
Sometimes when you attempt to repair a damaged Exchange Server database using Eseutil tool, the process might fail and you may find the following entries in the Application Event Log of Exchange Server:
Event Type: Information
Event Source: ESE
Event Category: Logging/Recovery
Event ID: 301
Date: 29-08-2003
Time: 13:44:26
User: N/A...
Posted on Monday, December 14, 2009 at 10:05 PM
Microsoft Exchange Server is designed to write all the database transactions to certain log files and commit them later whenever the system allows. The transactions also exist in system memory, but get lost in the event of crash. If the Exchange Server undergoes unexpected crash, these transaction logs serve as the crucial recovery method. For this reason, the transaction lof files should be kept on a reliable system. The log file header contains information like file signature, base name, creation time, checkpoint etc. At times, your Exchange Server indicates as it is unable to read this information. These are critical situations that may compel you to restore the data from an online backup or perform hard recovery for your databases. However, it is highly recommended that you try to move Exchange mailboxes on another server or use an Exchange Recovery product to repair the database.
To exemplify, consider a situation when you receive the below error with your Exchange Server database:...
Posted on Monday, December 07, 2009 at 12:30 AM
Exchange Server databases' transactions are temporarily stored in transaction log files. At times, you need to remove these files manually, usually when the disk runs out of space or the circular logging is disabled. If you come to such situations, it is recommended to determine that the logs have been committed to database or otherwise will cause problems. The database usually shows Dirty Shutdown state in such cases. However, the other reason for this is that database is corrupt. If it is, you should look for
Exchange Recovery solutions.
You can take the following situation when you try to mount an Exchange Server database. In an attempt of mounting the database, you might receive an error as below:
“An internal processing error has occurred. Try restarting the Exchange System Manager or the Microsoft Exchange Information Store service, or both.
ID no: c1041724
Exchange System Manager”...
Posted on Thursday, December 03, 2009 at 5:03 AM
You might receive several errors while performing a Jet database operation on an Exchange Server database. If the operation fails, one of the prime reason could be that the database is corrupt and requires
Exchange Server Recovery tool. You can do so by restoring from the online backup or using a third-party tool to scan and repair the database.
Consider that you perform a JET database operation and it fails with a JET_errReadVerifyFailure error that is recorded with number 1018. When you view Windows Event Viewer application log, you come across the below entry:
Event ID: 23
Source: EDB
Type: Error
Category: Database Page Cache
Description: MSExchangeIS ((455)) Direct read found corrupted page error -1018 ((1:251563) (0-2295758), 251563 379225672 381322824). Please restore the database from a previous backup.
Cause...
