Oracle : Ошибка ORA-19675

"file %s was modified during proxy copy"
*Cause: A proxy backup of the specified file failed because the file was
brought on-line or otherwise modified while the proxy backup was
in progress. This file was off-line or read-only when the backup
began, so the file was not put into hot-backup mode, therefore
no modifications are permitted while the backup is in progress.
*Action: Take another backup of this file.

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