Oracle : Ошибка ORA-01616

"instance %s (thread %s) is open - cannot disable"
*Cause: The thread is not closed. The last instance to use the thread died
leaving the thread open. A thread cannot be disabled until it is
closed. It is still required for crash or instance recovery.
*Action: If the database is open, instance recovery should close the thread
soon - wait a few minutes. Otherwise open the database - crash
recovery will close the thread.

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