sys Schema Views • event_class • total • total_latency • min_latency • avg_latency • max_latency • host • event • total • total_latency • avg_latency • max_latency 5181 These views summarize wait events, grouped by user and event. By default, rows are sorted by user and descending total latency. Idle events are ignored. The maximum single wait time of timed occurrences of the event for the host. The average wait time per timed occurrence of the event for the host. The total wait time of timed occurrences of the event for the host. The total number of occurrences of the event for the host. 28.4.3.51 The waits_by_user_by_latency and x$waits_by_user_by_latency Views The event name. The host from which the connection originated. These views summarize wait events, grouped by host and event. By default, rows are sorted by host and descending total latency. Idle events are ignored. The  waits_by_host_by_latency  and  x$waits_by_host_by_latency  views have these columns: The maximum single wait time of timed occurrences of events in the class. 28.4.3.50 The waits_by_host_by_latency and x$waits_by_host_by_latency Views The average wait time per timed occurrence of events in the class. The minimum single wait time of timed occurrences of events in the class. The total wait time of timed occurrences of events in the class. The total number of occurrences of events in the class. The event class.