shared buffers

Hi,

to my understanding it use to be "common sense" to limit shared buffers,
maybe around 32 GB.
due to ressources consumption of managing said cache.

I would like to know if, on a v15 with 256 GB RAM, setting shared buffers
to say 96 GB would benefit large BI queries ?
Or to say it differently, what could be advantages/disadvantages of such a
setup ?

thanks

Marc MILLAS
Senior Architect
+33607850334
www.mokadb.com