Monitoring Top Modules

The Top Modules table displays the top modules waiting for the corresponding wait event during the selected time period.

Modules represent the applications that set the service name as part of the workload definition. For example, the DBMS_SCHEDULER module may assign jobs that run within the SYS$BACKGROUND service. If a single module is using the majority of the wait time, then it should be investigated.

To monitor a module: 

1. On the Performance page, in the Average Active Sessions chart, click a block on the chart or its corresponding wait class in the legend.

   The Active Sessions Working page appears.

2. Under Detail for Selected 5 Minute Interval, select Top Modules from the View list.

   The Top Modules table appears.

3. Click the Module link of the module that is showing the highest percentage of activity.

   The Module page appears.

   This page contains information about the actions, activity, and statistics for the selected module.