Oracle : Ошибка ORA-29968

"No primary operator bindings found for ancillary binding #%s"
*Cause: At least one ancillary binding of the specified operator could
not be validated because all of its associated primary operator
bindings have been dropped.
*Action: Either drop the ancillary binding whose primary operators are
missing, or drop the entire operator, if this is the only binding.
This binding cannot be re-validated.

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