Using The Exchange Tools Isinteg And Eseutil s1y
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Using the Exchange tools ISINTEG and ESEUTIL to Ensure the Health of your Information Store In this article I will give you some information on how to use the Exchange tools ISINTEG and ESEUTIL. With the help of ESEUTIL you can defragment your Exchange information store offline, check the integrity of the store and repair the information store in case of emergency. ISINTEG is used to perform some tests on the information stores and to fix some errors. Before we start using ESEUTIL and ISINTEG ensure the following: • • • •
Make a backup of your Exchange databases even if you think the files are damaged and lost. Use ISINTEG and ESEUTIL with some understanding about what these tools really do. Ensure that you have done all other tests before you use ESEUTIL and ISINTEG. Dismount the store (then it is accessible for offline defrag, tests and more).
Figure 1: Dismount the information store
ESEUTIL ESEUTIL is a tool to defragment your exchange databases offline, to check their integrity and to repair a damaged/lost database. ESEUTIL is located in the \EXCHSRVR\BIN directory. This directory is not in the system path so you must open the tool in the BIN directory or enhance the system path with the \EXCHSRVR\BIN directory.
Figure 2: Change the system path to point to the \EXCHSRVR\BIN directory ESEUTIL /D parameters
Figure 3: ESEUTIL parameters
Defrag Exchange 2003 defragments the Exchange database every night. But this is only an online defrag of the database. An online defrag doesn’t reduce the size of the information store. To reduce the size of the databases, you must use an offline defrag.
When should I use an offline defrag?
Under normal conditions you don't need an offline defrag, but when you add tons of new s due to a merger or aquisition or when you delete many objects from the store it can be necessary to do an offline defrag. You can do a space dump with ESEUTIL /MS to determine the space. Also ensure that you have 110% free diskspace associated with the Exchange database size.
Figure 4: ESEUTIL /MS ESEUTIL parameters for defragmentation
Figure 5: ESEUTIL Defrag parameters Depending on the size of the information store and your hardware, the defrag process can consume a lot of time.
Figure 6: ESEUTIL defragmentation status
Check the integrity of the Exchange database You can check the integrity of your Exchange database with ESEUTIL /G. Please read NOTE 1 carefully in the following screenshot.
Figure 7: ESEUTIL integrity check To start the integrity check for the PRIV1.EDB database, type the following command: ESEUTIL /G „C:\Program files\exchsrvr\mdbdata\priv1.edb“
Figure 8: ESEUTIL integrity check status
Disaster recovery With a good backup in hand and Exchange databases and logfiles on different hard drives, it is no problem to recover from an Exchange disaster. Just restore the data from backup and initiate a roll forward of the transaction logs. Well done, the Exchange information store goes online. But what should you do when your backup isn't readable or you don't have a backup? Here's how these tools come to play. Before you start: • • • •
Make sure that the databases are really not startable Check the Application log for Exchange events that can tell you the cause of the failure Make a backup of the database Restart the server so that a soft recovery can be done
ESEUTIL /P parameters ESEUTIL /p repairs a corrupted or damaged database. Ensure that you have a minimum of 20% free disc capacity in association to the Exchange database size.
Figure 9: ESEUTIL repair modus Example: ESEUTIL /P „c:\program files\exchsrvr\mdbdata\priv1.edb“ /Se:\exchsrvr\mdbdata\priv1.stm /Te:\tempdb.edb This command will repair the database PRIV1.EDB. If you have no .STM file, you can create one with ESEUTIL /CREATESTM. Read more about this here. After running ESEUTIL, you can open a detailled logfile called >database<.integ.raw to see the results. As a last Step run ISINTEG –fix -test alltests. You can read more about ISINTEG later in this article.
ISINTEG ISINTEG is used to do some tests on your information store and to fix some detected errors and problems.
Figure 10: ISINTEG parameters ISINTEG is the only repair utility that understands the Exchange database as an Exchange database. What does this mean? ESE is a generic database engine that can be used by different applications (Exchange, Active Directory). ESEUTIL looks into the database as just another ESE database, and can see their tables and indexes. ESEUTIL just fixes the database tables. Now it is time for ISINTEG. ISINTEG is aware of the relation between database tables and records that turn them into folders and messages. After you run ISINTEG –FIX, you will see many warnings but you can safely ignore these messages. You should only pay attendtion to the end of ISINTEG. There should be zero errors reported. If there is an error, run ISINTEG again. This example shows ISINTEG –test folder
Figure 11: ISINTEG –test folder
Conclusion ESEUTIL and ISINTEG are two powerful tools for ensuring the health of your Exchange information store and a good resource to recover from failures in the store. Use these tools with caution when you want to repair your information store. It is always a good idea to make a backup before you use ESEUTIL to repair your Exchange databases. In this article I have explained only a few features of ESEUTIL and ISINTEG. For a full understanding of these tools, read the following KB articles. Related Links ESEUTIL Repairing Exchange databases with ESEUTIL - when and how? http://blogs.msdn.com/exchange/archive/2004/06/18/159413.aspx In Exchange 2000 Server and Exchange Server 2003 Eseutil in Repair/Integrity Mode Incorporates /X and /V Options http://.microsoft.com/default.aspx?scid=kb;en-us;232734 Use the Eseutil Utility to Detect File Header Damage in Exchange 2003 http://.microsoft.com/default.aspx?scid=kb;en-us;825088 How to maintain your Exchange database after you repair by using the Eseutil /p tool in Exchange Server 5.5, in Exchange 2000 Server, and in Exchange Server 2003 http://.microsoft.com/default.aspx?scid=kb;en-us;812357 How to use Eseutil to test transaction log files for damage in Exchange 2000 Server and in Exchange Server 2003 http://.microsoft.com/default.aspx?scid=kb;en-us;248122 Use the Eseutil Utility to Perform a Checksum Procedure on a Streaming File http://.microsoft.com/default.aspx?scid=kb;en-us;823167 How to defragment with the Eseutil utility (Eseutil.exe) http://.microsoft.com/default.aspx?scid=kb;en-us;192185 How to run Eseutil on a computer without Exchange Server http://.microsoft.com/default.aspx?scid=kb;en-us;244525 Eseutil /d Defragments the Database and the Streaming File http://.microsoft.com/default.aspx?scid=kb;en-us;254132 How to re-create STM File in Exchange 2000/2003 http://.microsoft.com/default.aspx?scid=kb;en-us;555146 How to defragment Exchange databases http://.microsoft.com/default.aspx?scid=kb;en-us;328804 ISINTEG
Running Isinteg -patch Is Not Needed in Exchange http://.microsoft.com/default.aspx?scid=kb;en-us;240202 The Exchange Information Store service may stop responding when you run the Isinteg utility in Exchange Server 2003 http://.microsoft.com/default.aspx?scid=kb;en-us;870976
Receive all the latest articles by email! Get all articles delivered directly to your mailbox as and when they are released on MSExchange.org! Choose between receiving instant updates with the Real-Time Article Update, or a monthly summary with the Monthly Article Update. Sign up to the MSExchange.org Monthly Newsletter, written by Exchange MVP Henrik Walther, containing news, the hottest tips, Exchange links of the month and much more. Subscribe today and don't miss a thing!
Latest articles by Marc Grote • • • • •
Hardening Exchange Server 2007 - Part 1: Introductory Steps Hardening Exchange Server 2007 - Part 2: Secure by Default Hardening Exchange Server 2007 - Part 3: Securing Email Client Access Exchange Server 2007 Edge Server Backup and Cloning How Exchange Server 2007 Extends the Active Directory Schema
Related links • • • • •
Restoring Exchange Server 2003 to alternate Hardware Understanding the Exchange Information Store Exchange 2003 Backup and Restore with NTBACKUP Transaction Logs, The Lifeblood of Exchange How to Properly Configure File System Antivirus Software on Exchange Server
Make a backup of your Exchange databases even if you think the files are damaged and lost. Use ISINTEG and ESEUTIL with some understanding about what these tools really do. Ensure that you have done all other tests before you use ESEUTIL and ISINTEG. Dismount the store (then it is accessible for offline defrag, tests and more).
Figure 1: Dismount the information store
ESEUTIL ESEUTIL is a tool to defragment your exchange databases offline, to check their integrity and to repair a damaged/lost database. ESEUTIL is located in the \EXCHSRVR\BIN directory. This directory is not in the system path so you must open the tool in the BIN directory or enhance the system path with the \EXCHSRVR\BIN directory.
Figure 2: Change the system path to point to the \EXCHSRVR\BIN directory ESEUTIL /D parameters
Figure 3: ESEUTIL parameters
Defrag Exchange 2003 defragments the Exchange database every night. But this is only an online defrag of the database. An online defrag doesn’t reduce the size of the information store. To reduce the size of the databases, you must use an offline defrag.
When should I use an offline defrag?
Under normal conditions you don't need an offline defrag, but when you add tons of new s due to a merger or aquisition or when you delete many objects from the store it can be necessary to do an offline defrag. You can do a space dump with ESEUTIL /MS to determine the space. Also ensure that you have 110% free diskspace associated with the Exchange database size.
Figure 4: ESEUTIL /MS ESEUTIL parameters for defragmentation
Figure 5: ESEUTIL Defrag parameters Depending on the size of the information store and your hardware, the defrag process can consume a lot of time.
Figure 6: ESEUTIL defragmentation status
Check the integrity of the Exchange database You can check the integrity of your Exchange database with ESEUTIL /G. Please read NOTE 1 carefully in the following screenshot.
Figure 7: ESEUTIL integrity check To start the integrity check for the PRIV1.EDB database, type the following command: ESEUTIL /G „C:\Program files\exchsrvr\mdbdata\priv1.edb“
Figure 8: ESEUTIL integrity check status
Disaster recovery With a good backup in hand and Exchange databases and logfiles on different hard drives, it is no problem to recover from an Exchange disaster. Just restore the data from backup and initiate a roll forward of the transaction logs. Well done, the Exchange information store goes online. But what should you do when your backup isn't readable or you don't have a backup? Here's how these tools come to play. Before you start: • • • •
Make sure that the databases are really not startable Check the Application log for Exchange events that can tell you the cause of the failure Make a backup of the database Restart the server so that a soft recovery can be done
ESEUTIL /P parameters ESEUTIL /p repairs a corrupted or damaged database. Ensure that you have a minimum of 20% free disc capacity in association to the Exchange database size.
Figure 9: ESEUTIL repair modus Example: ESEUTIL /P „c:\program files\exchsrvr\mdbdata\priv1.edb“ /Se:\exchsrvr\mdbdata\priv1.stm /Te:\tempdb.edb This command will repair the database PRIV1.EDB. If you have no .STM file, you can create one with ESEUTIL /CREATESTM. Read more about this here. After running ESEUTIL, you can open a detailled logfile called >database<.integ.raw to see the results. As a last Step run ISINTEG –fix -test alltests. You can read more about ISINTEG later in this article.
ISINTEG ISINTEG is used to do some tests on your information store and to fix some detected errors and problems.
Figure 10: ISINTEG parameters ISINTEG is the only repair utility that understands the Exchange database as an Exchange database. What does this mean? ESE is a generic database engine that can be used by different applications (Exchange, Active Directory). ESEUTIL looks into the database as just another ESE database, and can see their tables and indexes. ESEUTIL just fixes the database tables. Now it is time for ISINTEG. ISINTEG is aware of the relation between database tables and records that turn them into folders and messages. After you run ISINTEG –FIX, you will see many warnings but you can safely ignore these messages. You should only pay attendtion to the end of ISINTEG. There should be zero errors reported. If there is an error, run ISINTEG again. This example shows ISINTEG –test folder
Figure 11: ISINTEG –test folder
Conclusion ESEUTIL and ISINTEG are two powerful tools for ensuring the health of your Exchange information store and a good resource to recover from failures in the store. Use these tools with caution when you want to repair your information store. It is always a good idea to make a backup before you use ESEUTIL to repair your Exchange databases. In this article I have explained only a few features of ESEUTIL and ISINTEG. For a full understanding of these tools, read the following KB articles. Related Links ESEUTIL Repairing Exchange databases with ESEUTIL - when and how? http://blogs.msdn.com/exchange/archive/2004/06/18/159413.aspx In Exchange 2000 Server and Exchange Server 2003 Eseutil in Repair/Integrity Mode Incorporates /X and /V Options http://.microsoft.com/default.aspx?scid=kb;en-us;232734 Use the Eseutil Utility to Detect File Header Damage in Exchange 2003 http://.microsoft.com/default.aspx?scid=kb;en-us;825088 How to maintain your Exchange database after you repair by using the Eseutil /p tool in Exchange Server 5.5, in Exchange 2000 Server, and in Exchange Server 2003 http://.microsoft.com/default.aspx?scid=kb;en-us;812357 How to use Eseutil to test transaction log files for damage in Exchange 2000 Server and in Exchange Server 2003 http://.microsoft.com/default.aspx?scid=kb;en-us;248122 Use the Eseutil Utility to Perform a Checksum Procedure on a Streaming File http://.microsoft.com/default.aspx?scid=kb;en-us;823167 How to defragment with the Eseutil utility (Eseutil.exe) http://.microsoft.com/default.aspx?scid=kb;en-us;192185 How to run Eseutil on a computer without Exchange Server http://.microsoft.com/default.aspx?scid=kb;en-us;244525 Eseutil /d Defragments the Database and the Streaming File http://.microsoft.com/default.aspx?scid=kb;en-us;254132 How to re-create STM File in Exchange 2000/2003 http://.microsoft.com/default.aspx?scid=kb;en-us;555146 How to defragment Exchange databases http://.microsoft.com/default.aspx?scid=kb;en-us;328804 ISINTEG
Running Isinteg -patch Is Not Needed in Exchange http://.microsoft.com/default.aspx?scid=kb;en-us;240202 The Exchange Information Store service may stop responding when you run the Isinteg utility in Exchange Server 2003 http://.microsoft.com/default.aspx?scid=kb;en-us;870976
Receive all the latest articles by email! Get all articles delivered directly to your mailbox as and when they are released on MSExchange.org! Choose between receiving instant updates with the Real-Time Article Update, or a monthly summary with the Monthly Article Update. Sign up to the MSExchange.org Monthly Newsletter, written by Exchange MVP Henrik Walther, containing news, the hottest tips, Exchange links of the month and much more. Subscribe today and don't miss a thing!
Latest articles by Marc Grote • • • • •
Hardening Exchange Server 2007 - Part 1: Introductory Steps Hardening Exchange Server 2007 - Part 2: Secure by Default Hardening Exchange Server 2007 - Part 3: Securing Email Client Access Exchange Server 2007 Edge Server Backup and Cloning How Exchange Server 2007 Extends the Active Directory Schema
Related links • • • • •
Restoring Exchange Server 2003 to alternate Hardware Understanding the Exchange Information Store Exchange 2003 Backup and Restore with NTBACKUP Transaction Logs, The Lifeblood of Exchange How to Properly Configure File System Antivirus Software on Exchange Server
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