V$SYSTEM_EVENT

Columns
   ___________________________
 
   EVENT
   TIME_WAITED
   AVERAGE_WAIT
   TOTAL_WAITS
   TOTAL_TIMEOUTS

Related Views:

V$GLOBAL_TRANSACTION 
V$SHARED_POOL_RESERVED 
V$SORT_SEGMENT 
V$SORT_USAGE 
V$STATNAME 
V$SYSSTAT 
V$SYSTEM_CURSOR_CACHE 
V$TRANSACTION