Oracle : Ошибка ORA-19694

"some changed blocks were not found in the change tracking file"
*Cause: A backup or copy found that some changed blocks had not been
recorded in the change tracking file. The details of which files
and blocks are affected will be in an Oracle trace file.
*Action: This indicates that there is a problem with the change tracking
feature. Disable change tracking and re-start the backup.

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