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    Oracle Error ORA-12856: cannot run parallel query on a loopback connection

    admin November 16, 2024 No Comments

    Oracle Error Message

    ORA-12856: cannot run parallel query on a loopback connection

    Reason for the Error

    A table or index in a parallel query is referenced via a loopback connection.

    Solution

    Do not use loopback connection when running a query in parallel.

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