查看name server

cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 192.168.56.101

chkconfig named on ##设置开机自启动

DNS解析服务启动

service named start
Starting named: [ OK ]

nslookup cluster-scan.kingsql.org
nslookup 192.168.56.156
nslookup 192.168.56.157
nslookup 192.168.56.158

 补一个rpm 包 rpm -ivh pdksh-5.2.14-30.x86_64.rpm

禁用防火墙，关闭防火墙服务

chkconfig iptables off
service iptables stop

 修改selinux/config内的文件

vi /etc/selinux/config
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux security policy is enforced.
# permissive - SELinux prints warnings instead of enforcing.
# disabled - No SELinux policy is loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
# targeted - Targeted processes are protected,
# mls - Multi Level Security protection.
SELINUXTYPE=targeted

 创建用户和组

 修改用户和组的权限

mkdir -p /opt/ora11g/grid
mkdir -p /opt/ora11g/11.2.4/grid
chown -R grid:oinstall /opt
mkdir -p /opt/ora11g/oracle
chown oracle:oinstall /opt/ora11g/oracle
chmod -R 775 /opt

切换到oracle用户

修改环境变量

注意在配置环境变量时，两个节点的oracle_sid是不同的，要记得修改

[oracle@rac1 ~]$ vi .bash_profile
# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin

export PATH

export ORACLE_BASE=/opt/ora11g/oracle
export ORACLE_HOME=/opt/ora11g/oracle/product/11.2.4/dbhome_1
export ORACLE_SID=kingsql1 #2节点是kingsql2
export ORACLE_TERM=xterm
export PATH=/usr/sbin:$PATH
export PATH=/opt/ora11g/ogg:$ORACLE_HOME/bin:$PATH
export LD_LIBRARY_PATH=/opt/ora11g/ogg:$ORACLE_HOME/lib:/lib:/usr/lib:$LD_LIBRARY_PATH
export CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib
export NLS_DATE_FORMAT="yyyy-mm-dd HH24:MI:SS"
export NLS_LANG=AMERICAN_AMERICA.AL32UTF8
export LANG=C
export ORACLE_UNQNAME=kingsql

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

切换到grid用户

修改环境变量

[grid@rac1 ~]$ vi .bash_profile
# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin

export PATH

export ORACLE_BASE=/opt/ora11g/grid
export ORACLE_HOME=/opt/ora11g/11.2.4/grid
export ORACLE_SID=+ASM1 #2节点是+ASM2
export PATH=/usr/sbin:$PATH
export PATH=$ORACLE_HOME/bin:$PATH
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib
export CLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib

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
export LANG=C

切换到root用户

修改sysctl.conf文件

vi /etc/sysctl.conf
fs.aio-max-nr = 1048576
fs.file-max = 6815744
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

将修改从硬盘刷新到内存

/sbin/sysctl -p

修改/security/limits.conf文件