SELECT * FROM v$session_wait;

SID        SEQ#       EVENT                                                            P1TEXT                                                           P1         P1RAW    P2TEXT                                                           P2         P2RAW    P3TEXT                                                           P3         P3RAW    WAIT_TIME  SECONDS_IN STATE              
---------- ---------- ---------------------------------------------------------------- ---------------------------------------------------------------- ---------- -------- ---------------------------------------------------------------- ---------- -------- ---------------------------------------------------------------- ---------- -------- ---------- ---------- -------------------
         1      47117 pmon timer                                                       duration                                                                300 0000012C                                                                           0 00                                                                                 0 00                0         22 WAITING            
         2       1100 rdbms ipc message                                                timeout                                                                 300 0000012C                                                                           0 00                                                                                 0 00                0        105 WAITING            
         3       1205 rdbms ipc message                                                timeout                                                                 300 0000012C                                                                           0 00                                                                                 0 00                0        135 WAITING            
         6         26 rdbms ipc message                                                timeout                                                              180000 0002BF20                                                                           0 00                                                                                 0 00                0       1306 WAITING            
         4       2125 rdbms ipc message                                                timeout                                                                 300 0000012C                                                                           0 00                                                                                 0 00                0          0 WAITING            
         5       3876 smon timer                                                       sleep time                                                              300 0000012C failed                                                                    0 00                                                                                 0 00                0         77 WAITING            
         9         29 SQL*Net message from client                                      driver id                                                        1111838976 42455100 #bytes                                                                    1 00000001                                                                           0 00               -2          0 WAITED UNKNOWN TIME