Oracle Event 10397: suppress verbose parallel coordinator error reporting

create table tq84_ora_12801 (n varchar2(50));
insert into tq84_ora_12801 select level from dual connect by level <= 1e6;
-- This is not a zero but the uppercase letter O!
insert into tq84_ora_12801 values ('O');
commit;
 
select /*+ parallel */ max(to_number(n)) from tq84_ora_12801;
-- ORA-12801: error signaled in parallel query server P005
-- ORA-01722: invalid number
 
alter session set events '10397 trace name context forever, level 1';
select /*+ parallel */ max(to_number(n)) from tq84_ora_12801;
-- ORA-01722: invalid number