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Huge pages and AMM are mutually exclusive, but it does not mean you cannot run one database using AMM and another one using Huge pages or standard shared memory on the same computer. If you set pga_aggregate_target and sga_target parameters in an Instance that is configured for AMM, these values set the minimum values. The ASM instance requires AMM.
I suggest pelase review:
HugePages on Oracle Linux 64-bit [ID 361468.1]
Shell Script to Calculate Values Recommended Linux HugePages / HugeTLB Configuration [ID 401749.1]
ASMM and LINUX x86-64 Hugepages Support [ID 1134002.1]