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    Oracle Error ORA-00304: requested INSTANCE_NUMBER is busy

    admin November 15, 2022 No Comments

    Oracle Error Message

    ORA-00304: requested INSTANCE_NUMBER is busy

    Reason for the Error

    You attempted to start an Oracle instance with an already-used INSTANCE NUMBER parameter value.

    Solution

    There are 2 ways to fix this Oracle Error.

    • To use a different number, change the INSTANCE NUMBER initialization parameter in the initialization file. Then, restart the instance.
    • Wait for that instance number’s recovery to complete.

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