# vi /etc/security/limits.conf
#ORACLE SETTING
grid                 soft    nproc   2047
grid                 hard    nproc   16384
grid                 soft    nofile  1024
grid                 hard    nofile  65536
oracle               soft    nproc   2047
oracle               hard    nproc   16384
oracle               soft    nofile  1024
oracle               hard    nofile  65536
# vi /etc/pam.d/login
#ORACLE SETTING
session    required     pam_limits.so
# vi /etc/sysctl.conf
#ORACLE SETTING
fs.aio-max-nr = 1048576
fs.file-max = 6815744
kernel.shmall = 2097152
kernel.shmmax = 536870912
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048586

gird时间同步所需要的设置
Network Time Protocol Setting
/sbin/service ntpd stop
chkconfig ntpd off
rm /etc/ntp.conf

-----------------
--envs
#grid
ORACLE_SID=+ASM; export ORACLE_SID
ORACLE_BASE=/oracle/app/grid; export ORACLE_BASE
ORACLE_HOME=$ORACLE_BASE/product/11.2.0/grid; export ORACLE_HOME
PATH=$ORACLE_HOME/bin:$PATH; export PATH
LANG=C; export LANG
if [ $USER = "oracle" ] || [ $USER = "grid" ]; then
        if [ $SHELL = "/bin/ksh" ]; then
              ulimit -p 16384
              ulimit -n 65536
        else
              ulimit -u 16384 -n 65536
        fi
        umask 022
fi
 
#oracle
ORACLE_BASE=/oracle/app/oracle; export ORACLE_BASE
ORACLE_HOME=$ORACLE_BASE/product/11.2.0/dbhome; export ORACLE_HOME
ORACLE_SID=DB11; export ORACLE_SID
ORACLE_TERM=xterm; export ORACLE_TERM
PATH=/usr/sbin:$PATH; export PATH
PATH=$ORACLE_HOME/bin:$PATH; export PATH
LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib; export LD_LIBRARY_PATH
CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib; export CLASSPATH
LANG=C; export LANG
if [ $USER = "oracle" ] || [ $USER = "grid" ]; then
        if [ $SHELL = "/bin/ksh" ]; then
              ulimit -p 16384
              ulimit -n 65536
        else
              ulimit -u 16384 -n 65536
        fi
        umask 022
fi