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    Oracle Error ORA-19957: database should have no datafiles in unknown state

    admin November 29, 2024 No Comments

    Oracle Error Message

    ORA-19957: database should have no datafiles in unknown state

    Reason for the Error

    The operation failed because the database had one or more datafiles that were in an unknown state.

    Solution

    Drop the datafiles or recover them and bring them online.

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