Diffeentials and Deleted Transaction Logs - Veritas Backup Exec

This is a discussion on Diffeentials and Deleted Transaction Logs - Veritas Backup Exec ; I've just begun to have problems doing differential backups successfully. I get the following messages below. It says something about transaction log files being deleted, so the differential cannot complete. Also something about problems with the Information Store. Any ideas? ...

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Thread: Diffeentials and Deleted Transaction Logs

  1. Diffeentials and Deleted Transaction Logs


    I've just begun to have problems doing differential backups successfully.
    I get the following messages below. It says something about transaction log
    files being deleted, so the differential cannot complete. Also something
    about problems with the Information Store. Any ideas? Thanks

    *********
    No appendable media could be mounted.
    Switching to overwrite operation on scratch media.

    Drive and media information from media mount:
    Drive Name: ARCHIVE 0
    Media Cartridge Label: 4M000048
    Targeted Media Set Name: Rotation - Differential

    ================================================== ====================
    Job Operation - Backup
    Media operation - overwrite.
    Hardware compression enabled.
    ================================================== ====================

    Media Name: "Media created 04/17/00 11:00:04 PM"
    Backup of "\\PROFUNDSYSTEM01\Microsoft Exchange Directory "
    Backup set #1 on storage media #1
    Backup set description: "Tape Rotation 1iff"
    Backup Type: DIFFERENTIAL - Logs
    Backup started on 4/17/00 at 11:00:38 PM.

    Backup completed on 4/17/00 at 11:00:50 PM.
    Backed up 1 Exchange Server store(s)
    Processed 15,728,970 bytes in 12 seconds.
    Throughput rate: 75.002 MB/min
    ----------------------------------------------------------------------
    Unable to attach to \\PROFUNDSYSTEM01\Microsoft Exchange Information Store.
    NEWFS_EMS_NO_LOG_BKUP

    Incremental and differential backups are not possible, because one or more
    of the Microsoft Exchange transaction log files has been deleted since the
    last backup.

    Media Name: "Media created 04/17/00 11:00:04 PM"
    Backup of "\\PROFUNDSYSTEM01\Microsoft Exchange Mailboxes "
    Backup set #2 on storage media #1
    Backup set description: "Tape Rotation 1iff"
    Backup Type: DIFFERENTIAL - Changed Files
    Backup started on 4/17/00 at 11:00:53 PM.
    WARNING: "Eide, Brian?Top of Information Store?Sent Items?WA Foote?Extract
    for Kim Kanik" is a corrupt file.
    This file cannot verify.

  2. Re: Diffeentials and Deleted Transaction Logs

    I beilive that this occurs because of a bug in Backup Exec. Backup Exec
    purges any transaction log files that have been commited to the database at
    the start of each incremental backup. If a log file was created AND
    committed beween the running of backup jobs, the incremental will fail
    because the backup software itself will have just deleted a log file
    required to maintain a complete sequence.

    Chris Graham

    "Keith Hansen" wrote in message
    news:38fc66c8@hronntp01....
    >
    > I've just begun to have problems doing differential backups successfully.
    > I get the following messages below. It says something about transaction

    log
    > files being deleted, so the differential cannot complete. Also something
    > about problems with the Information Store. Any ideas? Thanks
    >
    > *********
    > No appendable media could be mounted.
    > Switching to overwrite operation on scratch media.
    >
    > Drive and media information from media mount:
    > Drive Name: ARCHIVE 0
    > Media Cartridge Label: 4M000048
    > Targeted Media Set Name: Rotation - Differential
    >
    > ================================================== ====================
    > Job Operation - Backup
    > Media operation - overwrite.
    > Hardware compression enabled.
    > ================================================== ====================
    >
    > Media Name: "Media created 04/17/00 11:00:04 PM"
    > Backup of "\\PROFUNDSYSTEM01\Microsoft Exchange Directory "
    > Backup set #1 on storage media #1
    > Backup set description: "Tape Rotation 1iff"
    > Backup Type: DIFFERENTIAL - Logs
    > Backup started on 4/17/00 at 11:00:38 PM.
    >
    > Backup completed on 4/17/00 at 11:00:50 PM.
    > Backed up 1 Exchange Server store(s)
    > Processed 15,728,970 bytes in 12 seconds.
    > Throughput rate: 75.002 MB/min
    > ----------------------------------------------------------------------
    > Unable to attach to \\PROFUNDSYSTEM01\Microsoft Exchange Information

    Store.
    > NEWFS_EMS_NO_LOG_BKUP
    >
    > Incremental and differential backups are not possible, because one or more
    > of the Microsoft Exchange transaction log files has been deleted since the
    > last backup.
    >
    > Media Name: "Media created 04/17/00 11:00:04 PM"
    > Backup of "\\PROFUNDSYSTEM01\Microsoft Exchange Mailboxes "
    > Backup set #2 on storage media #1
    > Backup set description: "Tape Rotation 1iff"
    > Backup Type: DIFFERENTIAL - Changed Files
    > Backup started on 4/17/00 at 11:00:53 PM.
    > WARNING: "Eide, Brian?Top of Information Store?Sent Items?WA Foote?Extract
    > for Kim Kanik" is a corrupt file.
    > This file cannot verify.




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