Easy way to tracing

Recently I needed to trace connections incoming by dblink, and I decided to make it more convenient, without the trigger.
It’s just three simple steps:

1. Create new service
2. Turn on tracing on this service
3. Edit tnsnames and add dblink for this service if needed

So Oracle will trace all connections to this service.

Below code for sql*plus:

begin
  DBMS_SERVICE.CREATE_SERVICE('db11203trace','db11203trace');
end;
/
column new_value new_value new_value;
select p.value||',db11203trace' new_value from v$parameter p where p.name like 'service_names';
alter system set service_names='&new_value';
exec dbms_monitor.serv_mod_act_trace_enable(service_name => 'db11203trace',waits => true,binds => true);