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BW on HANA: Can a HANA DB system 'overcommit' its memory - only part of DB in memory?

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Hi Guys

 

 

Lets say that we buy a single-node HANA hardware appliance with 512 GB memory and a HANA DB for SAP BW - after performing a sizing with this result.

 

After one year the BW database has grown unexpected and don't fit into this memory (512 GB) anymore.

 

Will HANA DB be able to run this larger database (with decreased performance) - 'overcommting' its memory, having some data in memory and other only on persistence storage?

 

...or will HANA DB simply crash - as if *ALL* data/database always must be able to fit into physical memory?

 

Br

Tom Bo


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