Implementing LARGEPAGES for Oracle in AIX - A quick primer

This post is a quick pocketbook guide on how to implement LARGEPAGES (HUGEPAGES) for Oracle in AIX, a memory configuration that, can result in improved performance across the board for medium to large sized Oracle databases. Implementing LARGEPAGES is fairly simple but, will need a reboot of the AIX Server as well as the Oracle Database itself. The following commands show how to implement LARGEPAGES at 16MB - You have to calculate the amount of lgpg_regions by dividing the total number of bytes by 16777216 (16MB) = 3456 in this case = 54GB:
$ chuser capabilities=CAP_BYPASS_RAC_VMM,CAP_PROPAGATE root
$ lsuser -a capabilities root
$ chuser capabilities=CAP_BYPASS_RAC_VMM,CAP_PROPAGATE oracle
$ lsuser -a capabilities oracle
$ vmo -p -o lgpg_regions=3456 -o lgpg_size=16777216
SQL> alter system set use_large_pages=TRUE scope=spfile sid='*';
SQL> alter system set lock_sga=TRUE scope=spfile sid='*';
The following commands show how to check settings for LARGEPAGES in AIX?
vmo -L lgpg_size
lsuser -a capabilities oracle
vmo -l lru_file_repage
$ svmon
               size       inuse        free         pin     virtual   mmode
memory     29330148    29416756       42342    27409745    26782987     Ded
pg space   15649478      413636
               work        pers        clnt       other
pin        24552011           0        2008      849232
in use     26467765           0      232907
PageSize   PoolSize       inuse        pgsp         pin     virtual
s    4 KB         -     2431776      373298     1181576     2565099
m   64 KB         -      201562        4303      190125      209497
L   16 MB      3456        3410           0        3456        5131
S   16 GB         -           0           0           0           0