The onperf utility displays database server metrics
obtained from shared memory.
When onperf starts, it activates the following processes:
The onperf process. This process controls the display of onperf tools.
The data-collector process. This process attaches to shared
memory and passes performance information to the onperf process
for display in an onperf tool.
An onperf tool is a Motif window that an onperf process
manages, as Figure 1 shows.
Figure 1. Data
flow from shared memory to an onperf tool window
