SAP HANA automatically performs unloads when memory becomes scarce. This is typically critical for performance and should be avoided whenever possible.
The following SAP HANA parameter globally controls when unloads are performed in case of a high memory utilization:
Parameter Name - unload_lower_bound
Default Value - 0 (default algorithm)
Unit for Parameter - byte
About Parameter -
This parameter can be used to define the minimum size of swappable SAP HANA objects that should remain in memory. Higher values result in less and later unloads. Normally the default value provides a reasonable unload behaviour and so it should only be adjusted in specific cases.
How to Set Parameter - indexserver.ini -> [memoryobjects] -> unload_lower_bound
Reference from : SAP Note 1993128 for more information.
Parameter Name - unload_lower_bound
Default Value - 0 (default algorithm)
Unit for Parameter - byte
About Parameter -
This parameter can be used to define the minimum size of swappable SAP HANA objects that should remain in memory. Higher values result in less and later unloads. Normally the default value provides a reasonable unload behaviour and so it should only be adjusted in specific cases.
How to Set Parameter - indexserver.ini -> [memoryobjects] -> unload_lower_bound
Reference from : SAP Note 1993128 for more information.
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