Certain parameters and that are to be taken care before 11gR2 GRID INFRASTRUCTURE installation

Here are some parameters, ownership, permissions that are to be taken care before 11gR2 Grid Infrastructure Installation  in AIX on Power Servers.

Network Parameters settings
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/usr/sbin/no -o udp_sendspace=65536       
/usr/sbin/no -o udp_recvspace=655360       
/usr/sbin/no -o tcp_sendspace=65536       
/usr/sbin/no -o tcp_recvspace=65536       
/usr/sbin/no -o rfc1323=1       
/usr/sbin/no -o sb_max=1310720       
/usr/sbin/no -o ipqmaxlen=512

Kernel Parameters
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vmo -p -o minperm%=3   
vmo -p -o maxperm%=90   
vmo -p -o maxclient%=90   
vmo -p -o lru_file_repage=0   
vmo -p -o strict_maxclient=1   
vmo -p -o strict_maxperm=0
ioo –a aio_maxreqs=65536   

Adding capabilities to the grid user as suggested by oracle
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#chuser capabilities=CAP_NUMA_ATTACH,CAP_BYPASS_RAC_VMM,CAP_PROPAGATE grid

 Disk Parameters settings for ASM storage
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#/usr/sbin/chdev -l hdisk2 -a pv=clear   
#/usr/sbin/chdev -l hdisk3 -a pv=clear

#chdev -l hdisk2 -a  reserve_policy=no_reserve
#chdev -l hdisk3 -a  reserve_policy=no_reserve

#chown grid:asmadmin /dev/rhdisk2           
#chmod 660 /dev/rhdisk2
#chown grid:asmadmin /dev/rhdisk3           
#chmod 660 /dev/rhdisk3

#chdev -l hdisk2 -a reserve_policy=no_reserve           
#chdev -l hdisk3 -a reserve_policy=no_reserve