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.
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.