Why Oracle insists that every Exadata SGA lives in HugePages, what USE_LARGE_PAGES=ONLY really does, and a step-by-step guide to calculating, configuring and verifying HugePages.
Linux Kernel Settings for Consolidating Databases on Exadata
SHMMAX at 85% of RAM looks like it lets one database swallow all the memory. It doesn't. Here is how the shared memory and semaphore kernel parameters really work when you consolidate many databases on Exadata.