Oracle : Ошибка ORA-28580

"recursive external procedures are not supported"
*Cause: A callback from within a user's 3GL routine resulted in the
invocation of another external procedure.
*Action: Make sure that the SQL code executed in a callback does not directly
call another external procedure, or indirectly results in another
external procedure, such as triggers calling external
procedures, PL/SQL procedures calling external procedures, etc.

Попробовать перевести

Поискать эту ошибку на форуме