Error writing header to backup file using SQL backup 4.6

mliumliu Posts: 26
edited August 17, 2007 12:19PM in SQL Backup Previous Versions
Hi,

Does anyone have ever run into the following issue?

It only happens from time to time, and it is not consistent. When SQL backup runs the scheduled log shipping file, it generates the log file; however, the property of the file indicates that it is "transaction log backup" with the date and time instead of saying it is transaction log encrypted. Whenever this happens, this log file can't be restored from the restore server until the process start over again, meaning we have to have a full restore before the log shipping files can be restored on the restore server.

Is there any way to fix the log file instead of starting all over?

Thanks
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Comments

  • peteypetey Posts: 2,358 New member
    Backup files may sometimes be locked by anti-virus software, preventing SQL Backup from updating the file header. Without the file header, SQL Backup is unable to sort the group of log files in the correct order during the restore.

    Try restoring only the log file that is missing its header. Then move the file out of the staging folder to the processed folder, and restart the restore job.
    Peter Yeoh
    SQL Backup Consultant Developer
    Associate, Yohz Software
    Beyond compression - SQL Backup goodies under the hood, updated for version 8
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  • mliumliu Posts: 26
    Hi Peter,

    Could you please let us know how we could restore the file without header?

    Thanks
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  • peteypetey Posts: 2,358 New member
    E.g.
    EXEC master..sqlbackup '-sql "RESTORE LOG pubs FROM DISK = [e:\backups\pubs_log_04.sqb] WITH NORECOVERY, MOVETO = [e:\backups\processed]" '
    When you restore only a single backup set, SQL Backup doesn't attempt to filter/sort the file using information that would normally be contained in the header.
    Peter Yeoh
    SQL Backup Consultant Developer
    Associate, Yohz Software
    Beyond compression - SQL Backup goodies under the hood, updated for version 8
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  • mliumliu Posts: 26
    Hi Peter,

    When we tried to restore the log file without header, here is the error that we have been getting:

    Thread 0 error:
    Data decompression error: Access violation at address 0050BC83 in module 'SQBCoreService.exe'. Read of address 7FE9E28C

    Server: Msg 3013
    RESTORE LOG is terminating abnormally.
    Server: Msg 3242
    The file on device 'SQLBACKUP_06F8443D-3DC7-4F2E-B6D1-B0921AA23955' is not a valid Microsoft Tape Format backup set.

    SQL Backup exit code: 790
    SQL error code: 3242

    Any ideas on how to resolve it?

    Thanks
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