The DA is a java process that run within a JVM (Java Virtual Machine).
To view the heap usage of the JVM you can use an OnDemand Report in PM Console
Dx NetOps Performance Management 22.2.x
In CA Performance Center navigate to:
Reports-On Demand Report templates:
At the bottom select new:
In the new window that opens, give this new report a name and any details you desire.
And I chose chart per metric, when I used chart with multiple metrics, I got all the counters in one box and didn’t like it.
You have to scroll down now as the window can't be expanded.
In add items window, hit add/remove items button to open new window….
Then filter for the aggregator and select it
Then click add and ok
Now that we have a device selected, the DA, we have available metrics.
Expand jvm health and pick the ones you want, please be sure to add all 7 metrics shown below:
From Available Metrics choose:
Data Aggregator JVM Health
Heap Size in Bytes - Average
Percent Heap Used - Average
Percent Heap Used - Maximum
Percent Heap Used - minimum
Application pause time - maximum
Application pause time - minimum
Application pause time - total
Run for your desired timeframe.