The Waits page shows wait events for the Oracle database. Deal With Wait Events
To open the Waits page
Click Activity | Waits.
 
Event Waits Grid
The Event Waits grid shows each individual wait event, together with the rate of waits, and time waited over the past time period.
Tips:
| Column | Description | 
|---|---|
| 
 Event  | 
 The name of the event.  | 
| 
 Total waits  | 
 The total number of waits.  | 
| 
 Waits/s  | 
 How many waits per second.  | 
| 
 % Total  | 
 The percentage of waits of this event against waits of all events.  | 
| 
 Total wait time  | 
 The total amount of the time waited, measured in milliseconds.  | 
| 
 Wait time/s  | 
 The number of milliseconds waited per second.  | 
| 
 % Total  | 
 The percentage of the waited time of this event against waited times of all events.  | 
| 
 Avg wait  | 
 The average time waited, measured in milliseconds.  | 
| Event category | 
Event Waits Chart
The Event Waits chart (also available on the Activity | Summary Page) shows the amount of time (in milliseconds) that sessions have spent waiting on various events per second. Event wait categories from V$SYSTEM_EVENT are aggregated into categories so that they can be graphed.
For more information about wait events, see Deal With Wait Events.
Notes: