Exchange Database Checksum Error
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| My Forums | Address Book | Member List | Search | FAQ | Ticket List | Log Out How to fix "bad checksums" after I ran Eseutil.exe /k Users checksum error on database page viewing this topic: none Logged in as: Guest Tree Style Printable Version database checksum sql server All Forums >> [Microsoft Exchange 2003] >> General >> How to fix "bad checksums" after I ran Eseutil.exe /k Page: checksum error in the encrypted file winrar [1] Login Message << Older Topic Newer Topic >> How to fix "bad checksums" after I ran Eseuti... - 16.Jul.2005 11:01:00 AM mgtang Posts: 15 Joined: 4.Jul.2002 From: Shanghai Status: offline Dear
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all,I found I was unable to do a full backup on my Exchange server 2003. The error I've got in my CA Brightstor ArcServe V9 is "E8602 Failed to read from database --EC= Backup Agent Error --(69) Read/Write error in named pipes". So I use eseutil.exe /k to check the database of my Exchange server, I got this result:File: d:\program files\exchsrvr\mdbdata\board.edb Checksum Status (% complete) 0 10 checksum error fix 20 30 40 50 60 70 80 90 100 |----|----|----|----|----|----|----|----|----|----| ...............................ERROR: page 956171 checksum failed ( 0x779e779ecac5729d / 0x77c277c2c187091b )......ERROR: page 1130500 checksum failed ( 0x64786478ce5a4091 / 0x64786478ce5a4081 )ERROR: page 1130516 checksum failed ( 0x79aa0655e4ab0b31 / 0x79aa0655e4ab0b21 )..............1534146 pages seen3 bad checksums1286 uninitialized pages0 wrong page numbers0xee43d02 highest dbtime (pgno 0xd4)95885 reads performed5992 MB read55 seconds taken108 MB/second56732585 milliseconds used591 milliseconds per read37281 milliseconds for the slowest read79 milliseconds for the fastest readFile: d:\program files\exchsrvr\mdbdata\board.STM Checksum Status (% complete) 0 10 20 30 40 50 60 70 80 90 100 |----|----|----|----|----|----|----|----|----|----| ...................................................543744 pages seen0 bad checksums77269 uninitialized pagesOperation terminated with error -1206 (JET_errDatabaseCorrupted, Non database file or corrupted db) after 105.31 seconds.Could anybody tell me how to fix this "bad checksums" error? Thank you! Post #: 1 Featured Links* RE: How to fix "bad checksums" after I ran Es... - 16.Jul.2005 10:45:00 PM jmcbee Posts: 123 Joined: 9.May2005 From: Honolulu, HI Status: offline As you have found, you have corruption in your database. This is probably preventing online backups from running, too. First of all, here is a really good article that will help you understand what is (or may have happened) to your database. Based
Exchange recovery in case of Page Checksum Mismatch Microsoft Exchange Server includes the procedure to become aware about file level damage caused to its pages in Exchange database. Using ESEUTIL utility with /K switch, you can detect errors in databases at both checksum error witcher 3 the page level and the file level. If this wonderful utility results into errors, then
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it is sure that one or more pages of your database are corrupt. The most common errors and symptoms that are associated
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with file-level damage to an Exchange database are as follows: 1018 JET_errReadVerifyFailure: This error is page level is typically caused by driver, firmware, or hardware issues, although page-level damage might also be caused by problems in http://forums.msexchange.org/How_to_fix_%26quot%3Bbad_checksums%26quot%3B_after_I_ran_Eseutil%25exe_%2Fk/m_150575500/tm.htm Exchange Server. 1019 JET_errPageNotInitialized Microsoft Outlook is not started at the client side Sending/receiving of messages fails What causes a page checksum error? Exchange Server reports -1018 error when a page in the database file holds any one of the following conditions: The stored checksum on the page does not equal the result of the checksum recalculation that is performed when the page is read. The page number on the database page http://www.nucleustechnologies.com/datarecoveryblog/exchange-recovery-in-case-of-page-checksum-mismatch/ is incorrect. How to resolve page checksum errors? Pages that fail due to error -1018 are treated by Exchange Server as completely unreadable to prevent action on random data from causing further problems in the database. To resolve page checksum errors, follow these steps: Run system diagnosis to check for RAM or other firmware related issues. Restore the database from the valid and available backup Update the firmware and system BIOS with their latest versions available Use the Eseutil.exe /D switch to do an offline defragmentation of the database. Use the Eseutil.exe /P switch to repair the database. If any of the above mentioned methods does not resolve the issues, then the last and most reliable option is the use of Exchange Recovery tools. Competent and powerful Exchange recovery software are implemented with technologically advanced algorithms for fixing all types of corruption issues. Kernel for Exchange Server repair efficiently recovers emails, email data, attachments, images, folders, tasks, notes, journals, appointments, sent items, permanently deleted emails, email properties and every other item which is there in the user mailbox without harming the actual  contents. Exchange recovery in case of Page Checksum Mismatch Post navigation How PST archiving can avoid Corruptions?Exchange database corruption after using Exmerge.exe Recent Posts Ever migrated OST files to Office 365? Now a cloud-base
& Marketing Manager GROUP SPONSORED BY EXCLAIMER TECHNOLOGY IN THIS DISCUSSION Symantec 258779 Followers Follow Microsoft Exchange Server 2010 Join the Community! Creating your account only takes a few minutes. Join Now Well, how to ask this?? Exchange server froze while creating an https://community.spiceworks.com/topic/302087-corrupt-exchange-db-help account.. locked solid. This is a new server too. On reboot, the store service would start, but the mailboxes in the server manager would not mount.. The error said DB was corrupted. I ran the eseutil /r and a bunch of other /minor/ stuff, all of them failed.. saying there were erorros, checksum problems and more. I tried to restore my DB from a symantec backup, that didn't work. Great.. said the backup was 0 size, and just say there.. wouldn't checksum error restore. (Using backup exec 2012) So I did what I didn't want to do... ran the eseutil.exe /p to do a full repair. It is running now... it just hit the second phase of 'rebuilding the MYsysObjects and I am curious as to if I am doing this right, and how long it would take? Reply Subscribe View Best Answer RELATED TOPICS: How do I reduce the size of my exchange db Exchange DB size and other stuff... Lost Exchange checksum error on DB store   22 Replies Mace OP Jay6111 Feb 12, 2013 at 2:58 UTC As for time it will take, that depends on the size of the DB and the speed of the disk. In my experience, anything over 20gig and on 7200 disks will more than likely crap out and fail before it finishes and will take up to 8 hours or more. Moving the DB to faster disk and running the utility has worked for me if that happens. There is a chance as always when using the higher level switches in eseutil of data loss. What version of Exchange? -Jay 0 Cayenne OP PU-36 Feb 12, 2013 at 2:58 UTC It could take hours and still may not work at the end. Exchange tools give you the "best effort" to fix the issue. Typically you want to run the eseutil /p as the last resort since it will attempt to repair your database regardless of loss data. If you felt that you have exhausted all other possibilities, then yes you are doing it right. Without knowing more about your scenario and situation, being "right" is subjective. Once you get it up and running and find out what you have lost, learn from this experience. Check your backup logs and verify data, wait longer for the "freeze" to fix itself, etc... Hindsight is 20/20 but from that hindsight comes wisdom beyond complacency. 3 Datil OP Jeff Jones Feb 12