How to turn on trace for awr snapshot action

 
oradebug setmypid
oradebug unlimit
 
alter session set "_swrf_test_action" = 10;
begin
dbms_monitor.serv_mod_act_trace_enable(service_name=>'SYS$BACKGROUND', 
module_name=>'MMON_SLAVE', action_name=>'Auto-Flush Slave Action');
dbms_monitor.serv_mod_act_trace_enable(service_name=>'SYS$BACKGROUND', 
module_name=>'MMON_SLAVE', action_name=>'Remote-Flush Slave Action');
end;
/
 
 
begin
 dbms_workload_repository.create_snapshot();
end;
/
 
 
begin
dbms_monitor.serv_mod_act_trace_disable(service_name=>'SYS$BACKGROUND', 
module_name=>'MMON_SLAVE', action_name=>'Auto-Flush Slave Action');
dbms_monitor.serv_mod_act_trace_disable(service_name=>'SYS$BACKGROUND', 
module_name=>'MMON_SLAVE', action_name=>'Remote-Flush Slave Action');
end;
/
 
alter session set "_swrf_test_action" = 11;
oradebug tracefile_name