InterviewSolution
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InterviewSolution
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My Extract Was Running Fine For A Long Time. All Of A Sudden It Went Down. I Started The Extract Processes After 1 Hour. What Will Happen To My Committed Transactions That Occurred In The Database During Last 1 Hour? |
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Answer» OGG checkpoint provides the FAULT TOLERANCE and make sure that the transaction marked for committed is capture and captured only once. Even if the EXTRACT went down abnormally, when you start the process again it reads the checkpoint FILE to provide the READ consistency and transaction recovery. OGG checkpoint provides the fault tolerance and make sure that the transaction marked for committed is capture and captured only once. Even if the extract went down abnormally, when you start the process again it reads the checkpoint file to provide the read consistency and transaction recovery. |
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