Search notes:

Oracle: DBMS_SYSTEM.SET_EV

This procedure allows to set a diagnost event in another session.

In the special case of the diagnostic event 10046, dbms_system.set_sql_trace_in_session or dbms_support.start_trace can be used.

dbms_support.set_ev(
  sid,
  serial#,
  event_number,
  event_level,
  event_name
);

See also