Calling Procedure With Commit From Trigger

I searched, found this one hit and according to mateoc15, you cannot commit within a procedure that is called from a trigger. He must be right, because mine is not committing either, nor are any errors given.

Trigger

Create or replace trigger owner_name.table1_trg2
after update on table1
for each row
call owner_name.procedure1;

procedure Code (psuedo):

Create or replace procedure1 as
begin
update table1 set col1 = 'whatever';
commit;
exception when others then
rollback;

Executing the procedure as owner_name on SQLPlus works fine, but when I update a column of the table via the PL/SQL package (on the web form), the column does not update, telling me that the procedure never fired from the trigger.