I need help with a trigger mutating a table

Question

I'll add the trigger I have written now at the bottom. Here is the problem that I have. We have employees and their families in an individual table.
A family is indicated by matching client, branch, and emp_id. An employee is indicated by individual_num = 1. All other numbers indicate family members. A person is determined to be terminated by having a date other than '2299/12/31' (It's a varchar(10) and very very wrong. Don't ask...) in the termination date column.
A family member can be terminated in the system independent of the rest of there family. However, if an employee is terminated then all active family members need the termination date set to the same date as the employee. If that termination date is then changed for the employee all family members with the same date need to have their dates updated.
I understand why this causes table mutation but I need a work around. Any ideas? Please...
CREATE OR REPLACE TRIGGER INDIV_EMP_TERM
after update on INDIVIDUAL
for each row
begin
if ( :new.INDIVIDUAL_NUM = 1 and :old.TERMINATION_DATE <> :new.TERMINATION_DATE ) then
if ( :old.TERMINATION_DATE = '2299/12/31' ) then
     update INDIVIDUAL
          set TERMINATION_DATE = :new.TERMINATION_DATE
          where CLIENT = :new.CLIENT
          and BRANCH = :new.BRANCH
          and EMP_ID = :new.EMP_ID
          and INDIVIDUAL_NUM <> 1
          and TERMINATION_DATE = '2299/12/31';
     else
     update INDIVIDUAL
          set TERMINATION_DATE = :new.TERMINATION_DATE
          where CLIENT = :new.CLIENT
          and BRANCH = :new.BRANCH
          and EMP_ID = :new.EMP_ID
          and INDIVIDUAL_NUM <> 1
          and TERMINATION_DATE = :old.TERMINATION_DATE;
     end if;
end if;
end;

Answer 1

Try your code like this below .It will help you to eliminate the mutating error
create or replace PACKAGE test_update IS
type row_type is table of rowid index by binary_integer;
v_row row_type ;
v_index binary_integer ;
v_num integer := 0 ;
flag integer := 1 ;
END;
create or replace trigger test_up
before update
on test123
begin
select USR_ID
into test_update.v_num
from test123 ;
dbms_output.put_line ( 'before update '||test_update.v_num );
test_update.v_index := 0;
end ;
create or replace trigger test_up_after
after update
on test123
begin
dbms_output.put_line ( test_update.v_index );
test_update.flag := 0 ;
for i in 1 .. test_update.v_index loop
update test123
set UPD_BY = nvl(test_update.v_num ,0),
UPD_DATE = sysdate
where rowid = test_update.v_row(i) ;
end loop ;
test_update.flag := 1 ;
test_update.v_index := 0;
end ;
create or replace trigger test_1
after update on test123
for each row
begin
-- dbms_output.put_line ( 'after update test flag '||test_update.flag );
if test_update.flag = 1 then
test_update.v_index := test_update.v_index + 1 ;
test_update.v_row(test_update.v_index) := :old.rowid ;
end if ;
end ;