There are two types of permanent license keys available for SAP HANA: unenforced and enforced.

If an unenforced license key is installed, the operation of SAP HANA is not affected if its memory consumption exceeds the licensed amount of memory.

However, if an enforced license is installed, the system is locked down when the current memory consumption of SAP HANA exceeds the licensed amount of memory plus some tolerance. If this happens, either SAP HANA needs to be restarted, or a new license key that covers the amount of memory in use needs to be installed.

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