Hi,
by default the HDB automatically unloads unused tables if memory is low. So there is no need to do this manually.
If you have a scenario which the sizing is not adequate, you can adjust this parameters:
| Parameter | default | Unit | Header 2 |
|---|---|---|---|
| global.ini -> [memoryobjects] -> unused_retention_period | 0 (disabled) | s | Number of seconds after which an unused object can be unloaded |
| global.ini -> [memoryobjects] -> unused_retention_period_check_interval | 7200 | s | Check frequency for objects exceeding the retention time |
Configuring a retention for unloads typically provides no advantage and increases the risk of unnecessary unloads and loads. Therefore these parameters should only be set in exceptional situations.
For more details => 2127458 - FAQ: SAP HANA Loads and Unloads
Regards,
Jens