declare
l_num number:=10;
begin
L_num:=l_num/0;
dbms_output.put_line('continue');
exception when others then
dbms_output.put_line('exception');
end;

SQL> declare
  2    l_num number:=10;
  3    l_excp exception;
  4    pragma exception_init(l_excp, -1476);
  5  begin
  6    begin
  7      L_num:=l_num/0;
  8    exception when l_excp then dbms_output.put_line('exception');
  9    end;
 10    dbms_output.put_line('continue');
 11  end;
 12  /
exception
continue

PL/SQL procedure successfully completed.