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Pulling data out of the transaction log

  • October 20, 2010 at 1:09 pm

    #143191

    DB1: Prod

    DB2: Prod Restore from previous night

    I backed up DB1 which had some tables overwritten.

    I restored DB2 onto DB1, but I am losing data by doing that.

    How can I get the data that I lost from doing the restore?

    Any options with the TLOG?

    Comparison tools to compare the tables and see what's different?

    Please help.

  • October 20, 2010 at 2:11 pm

    #1239918

    Restore the databases alongside each other and use something like Redgate's SQLDataCompare.

    The tran log won't tell you anything of use here. You restored over the DB that the changes were made to. You lost any ability to check back over the old log records when you did that.

    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

  • October 21, 2010 at 8:29 am

    #1240361

    But I did save a copy of the database before I restored over it. I have the corrupted restored on another database. Is there still any hope to grab the lost data from the restore of the corrupt database, it's online and query-able.

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