Exchange Store dismounting

Discussion in 'Windows Small Business Server' started by Kelvin, Dec 5, 2007.

  1. Kelvin

    Kelvin Guest

    Almost every night the Information store goes offline and does not come back
    on-line. The Event log shows the following:
    Information Store (3020) First Storage Group: Online defragmentation of
    database 'D:\Exchsrvr\MDBdata\priv1.edb' was interrupted and terminated. The
    next time online defragmentation is started on this database, it will resume
    from the point of interruption.


    The Microsoft Exchange Information Store database "First Storage
    Group\Mailbox Store (SERVER1)" was stopped.

    Then, of course, we get this over and over again:
    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

    I can navigate to the MailBox store in Server Management and "Mount Store"
    to alleviate the problem.

    Am I correct in assuming that there is probably some corruption in the
    database somewhere causing it to go offline when the defrag craps out?

    Should I be using isinteg to attempt a re-build of the database? (Something
    I do NOT look forward to)

    Kelvin, Dec 5, 2007
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  2. Hi Kelvin - first of all, I would not recommend running any utilities
    against your Exchange databases without first diagnosing the cause and
    making sure that's the appropriate course of action.

    Have you made any configuration changes, added software, changed AV, or
    anything like that around the time this started?

    Are online backups running and completing successfully? Not only should you
    be sure you have a rock solid backup, but a successful online backup would
    be at least some indication that the problem is not with the databases.
    Once you remount the stores, does Exchange appear to be functioning normally
    and error-free until the next defrag?

    You didn't post the entire error messages, but if you look back at them, you
    can go to and enter the event ID and source to see if
    there's any helpful information there. This is your #1 source of info for
    errors from the event logs. Google is #2, and if you search
    8004011d-0512-00000000 you'll get a large number of hits. I'd start with
    EventID, though - it may be easier to narrow down from there.

    Do you have anything else running at the time Exchange does its maintenance
    routines overnight? If so, I'd stop or reschedule that to see if you get a
    completed defrag. Also, make sure the Exchange database files are excluded
    from your file-level virus scanning. See "Overview of Exchange Server 2003
    and antivirus software" at
    Dave Nickason [SBS MVP], Dec 5, 2007
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