Oracle : Ошибка ORA-00392

"log %s of thread %s is being cleared, operation not allowed"
*Cause: An operation encountered this online log in the middle of being
cleared. The command that began the clearing may have terminated
without completing the clearing.
*Action: If the clear command is still executing then wait for its
completion. If it terminated then reissue the clear command, or
drop the log.

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