arch files
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Thread: arch files

  1. #1
    Join Date
    Mar 2008
    Posts
    140

    arch files

    Hi, my question is during the log switch does the datafiles gets updated with new data? If yes, then what is the use of keeping archive log files on disk?


    thanks,

  2. #2
    Join Date
    Sep 2002
    Location
    England
    Posts
    7,333
    so you can recover, always a useful thing

  3. #3
    Join Date
    Mar 2008
    Posts
    140

    arch files

    Ok, but do the datafiles gets updated during log switch?


    thanks,

  4. #4
    Join Date
    Oct 2008
    Posts
    69
    Quote Originally Posted by iris View Post
    Ok, but do the datafiles gets updated during log switch?


    thanks,
    correct me if i am wrong but a log switch forces a checkpoint which causes dbwr to write out to the datafiles

    you would want your archive logs kept (and backed up) for point in time recovery.

  5. #5
    Join Date
    Nov 2001
    Posts
    335
    And how are you going to recover in case datafiles lost? You need archived logs to roll forward from the point of your last backup until as much as possible or any other desirable point of time in between
    One, who thinks that the other one who thinks that know and does not know, does not know either!

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