Update on Cascade Oracle with composite primary key

Question

create or replace TRIGGER cascade_update

    AFTER UPDATE OF project_name ON PROJECT
    FOR EACH ROW
    BEGIN

      UPDATE VEHICLE
       SET project_name = :new.project_name
       WHERE project_name = :old.project_name;

       UPDATE VELOCITY_LIMIT
       SET project_name = :new.project_name
       WHERE project_name = :old.project_name;

       UPDATE ENERGY
       SET project_name = :new.project_name
       WHERE project_name = :old.project_name;

       UPDATE GEAR
       SET project_name = :new.project_name
       WHERE project_name = :old.project_name;

       UPDATE THROTTLE
       SET project_name = :new.project_name
       WHERE project_name = :old.project_name;

       UPDATE REGIME
       SET project_name = :new.project_name
       WHERE project_name = :old.project_name;

       UPDATE NETWORK
       SET project_name = :new.project_name
       WHERE project_name = :old.project_name;

       UPDATE ROAD
       SET project_name = :new.project_name
       WHERE project_name = :old.project_name;

       UPDATE TOLL
       SET project_name = :new.project_name
       WHERE project_name = :old.project_name;

       UPDATE SECTION
       SET project_name = :new.project_name
       WHERE project_name = :old.project_name;

       UPDATE LOCAL
       SET project_name = :new.project_name
       WHERE project_name = :old.project_name;

    END;

.

create or replace PROCEDURE UPDATE_Project(old_name Project.project_name%type, project_name2 Project.project_name%type, project_description2  Project.project_description%type)
    IS

    BEGIN
    UPDATE PROJECT
    SET project_name = project_name2,
    project_description = project_description2
    WHERE project_name = old_name;

    END;

I need to update the field project_name which is in all tables, but when I run the trial I created presents these errors. I would like to know the best solution to update all fields.

SEVERE: ORA-02292: integrity restriction (FKROAD185752) violated - found child record

ORA-06512: on "CASCADE_UPDATE", line 27

ORA-04088: error during execution of Trigger 'CASCADE_UPDATE'

ORA-06512: in "UPDATE_PROJECT", row 5

ORA-06512: on line 1