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tail log backup

  • July 2, 2013 at 10:30 pm

    #279469

    when do we take tail-log backup? and how can we take? wt cmds to be used

  • July 3, 2013 at 1:08 am

    #1629376

    When your database is damaged and you are trying to do a last-ditch backup of the log before starting restoring over it, or when for other reasons you're restoring or moving a DB and want to ensure that no transactions are lost.

    It's a backup log command. WITH NO_TRUNCATE if the log is damaged, with NO_RECOVERY if it's not.

    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

  • July 3, 2013 at 12:07 pm

    #1629636

    thankyou

  • July 3, 2013 at 1:42 pm

    #1629652

    you would use the norecovery option on a log backup when you want to swap primary and secondary roles in a logshipping set up without needing to reinitialise from a full backup.

    ---------------------------------------------------------------------

  • July 3, 2013 at 3:09 pm

    #1629685

    manikanta1207 (7/2/2013)

    when do we take tail-log backup? and how can we take? wt cmds to be used

    This sounds like a series of interview questions. My recommendation is that Gail's good answer has given you the end result but you need to readup about backups and TailLog backups in Books Online. Just in case you don't know what "Books Online" is, open SSMS then press the {f1} key and you're there (is the SQL Server "help" system).

    --Jeff Moden

    RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
    First step towards the paradigm shift of writing Set Based code:
    ________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

    Change is inevitable... Change for the better is not.

    Helpful Links:
    How to post code problems
    How to Post Performance Problems
    Create a Tally Function (fnTally)

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