3765582 - How-To: Understand Memory Statistics In HANA Memory Analysis App

You might observe sudden increase in memory usage observed over recent weeks in Memory Analysis App, but could not find any root cause for such increase.

Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental. 

SAP S/4HANA Cloud Public Edition

Open HANA Memory Analysis App and observe memory increases like what's shown in the graph:

The "increase" or "jump" in memory comes from the way the HANA memory analysis app is keeping data. 

1. The black line which is the indexserver Process Allocation Limit (in other word, the capacity provided to your system). It is kept for 30 days.
2. The various memory components (in colored blocks) are describing parts of the memory usage. They are kept only 14 days. 
3. The grey grid showing the free memory (MB) is only a calculation made at display which shows the difference between 1 and 2.

Consequences: 

1. For the days between N-30 and N-14, since (2) was deleted and no longer available, the graphs shows (3) = (1). But this is completely false. It is only that the historical data is deleted.
2. For the days before N-30, (1) is 0. This is also completely false. It is only that the historical data is deleted.

Please refer to the data from last 14 days for a better overview of how much is available and how much has been consumed.

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