Oracle Solution for Error ora-29968

ORA-29968: No primary operator bindings found for ancillary binding #string

What triggered the Error:

At least one ancillary binding of the specified operator could not be validated because all of its associated primary operator bindings have been dropped.

What should we do to fix it:

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.