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Backups -What point of the backup would be reflected in the restore ?

  • September 11, 2008 at 8:18 am

    #124564

    When you take a backup of a SQL Server database, does the SQL take the backup as from the end of the backup, or the start of the backup? We have a backup that takes four hours to run, and is used 24 x 7 x 365 days. If we restore would it reflect how it was at the start or end of the backup ?

  • September 11, 2008 at 8:28 am

    #870350

    Have a look at this:

    http://www.sqlskills.com/blogs/paul/2008/01/31/MoreOnHowMuchTransactionLogAFullBackupIncludes.aspx

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

    We walk in the dark places no others will enter
    We stand on the bridge and no one may pass

  • September 11, 2008 at 8:31 am

    #870352

    The backup will as at the END of the backup (SQL Server actually appends to the backup file, any changes made since the start of the backup).

  • September 11, 2008 at 9:26 am

    #870410

    Excluding any transactions that were uncommitted at the end of the backup. (They'll be included in the backup file, but will be rolled back during the restore)

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

    We walk in the dark places no others will enter
    We stand on the bridge and no one may pass

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