#statistics clockstats cryptostats loopstats peerstats
restrict 127.0.0.1
server 10.36.106.34 prefer driftfile /var/lib/ntp/drift broadcastdelay 0.008
6）内核参数调整 节点1 ycweb1:
cat >> /etc/sysctl.conf << EOF kernel.shmall = 6291456 7864320
kernel.shmmax = 25769803776 32212254720 kernel.shmmni = 4096 4096
kernel.sem = 250 32000 100 128 250 32000 100 128 fs.file-max = 755360 65536
net.ipv4.ip_local_port_range = 9000 65500 1024 65000 net.core.rmem_default = 262144 262144 net.core.wmem_default = 262144 262144 net.core.rmem_max = 1048536 262144 net.core.wmem_max = 1048536 262144 #vm.pagecache = 1 10 30 6.2 中不存在 vm.min_free_kbytes=819200 819200 vm.vfs_cache_pressure=200 200 vm.swappiness =40 40 vm.nr_hugepages=8500 8500 kernel.core_uses_pid = 0 0 EOF
节点2 ycweb2 同上
REDHAT6.2下：
kernel.shmall = 7864320 kernel.shmmax = 32212254720 kernel.shmmni = 4096
kernel.sem = 250 32000 100 128 fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000 net.core.rmem_default = 262144 net.core.rmem_max = 262144 net.core.wmem_default = 262144 net.core.wmem_max = 262144
vm.min_free_kbytes=819200 vm.vfs_cache_pressure=200 vm.swappiness =40 vm.nr_hugepages=8500 kernel.core_uses_pid = 0
7）安全限制调整 节点1 ycweb1
shell limits 设置：
cat >> /etc/security/limits.conf << EOF 内容如下：
orasrv soft nproc 4096 orasrv hard nproc 16384 orasrv soft nofile 65536 orasrv hard nofile 65536 orasrv soft memlock 30857216 orasrv hard memlock 30857216 * soft nproc 4096 * hard nproc 16384 * soft nofile 65536 * hard nofile 65536 EOF
节点2 ycweb2
shell limits 设置： 同上
8）会话限制调整 节点1 ycweb1
[root@ycweb1 ~]# vi /etc/pam.d/login # Add by RAC install
session required /lib/security/pam_limits.so
节点2 ycweb2
[root@ycweb2 ~]# vi /etc/pam.d/login # Add by RAC install
session required /lib/security/pam_limits.so
9）系统补丁包
要求安装Redhat6.2系统的补丁集。确保下面的包被安装，
binutils compat-db compat-libstdc++-33 glibc glibc-devel glibc-headers gcc gcc-c++ libstdc++ cpp make libaio ksh elfutils-libelf sysstat libaio libaio-devel setarch gcc make binutils openmotif glibc setarch libaio compat-db libXp
openmotif compat-libstdc++-33-3.2.3 compat-gcc-34-c++- 补丁包的安装工作非常重要，如果补丁包没有安装完整，在crs的安装过程中会出现各种问题，因此前期包的安装工作很重要。
二、安装前的准备工作
1）相关组、用户创建 节点1 ycweb1
[root@ycweb1 ~]# /usr/sbin/groupadd -g 502 dba
[root@ycweb1 ~]#/usr/sbin/useradd -g dba -d /rdbm/orasrv -u 501 -p ora123 orasrv 注意使用passwd命令修改orasrv用户的密码，且两节点的orasrv用户的ID号保持一致。 节点2 ycweb2同上。 2)建立信任关系：
两节点要实现orasrv用户，无口令ssh,rlogin。 3）环境变量设置
节点1 ycweb1
[grid@ycweb1 ~]$ 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 DISPLAY=:0.0 export TEMP=/tmp export TMPDIR=/tmp
export ORACLE_BASE=/rdbm/orasrv
export ORA_CRS_HOME=$ORACLE_BASE/product/10g/crs export CRS_HOME=$ORA_CRS_HOME
export ORACLE_HOME=$ORACLE_BASE/product/10g/db export ORACLE_OWNER=orasrv export ORACLE_SID=orcl1 export ORACLE_TERM=vt100
export PATH=$ORACLE_HOME/bin:$ORACLE_HOME/Apache/bin:.:$PATH export
LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib:$ORACLE_HOME/rdbms/lib:$ORA_CRS_HOME/lib:/usr/local/lib
#export NLS_LANG=american_america.zhs16gbk export NLS_LANG=American_America.ZHS16GBK
export ORA_NLS33=$ORACLE_HOME/ocommon/nls/admin/data export
PATH=$PATH:.:$ORACLE_HOME/bin:$ORA_CRS_HOME/bin:/usr/bin:/sbin:$ORACLE_HOME/OPatch
set -o emacs
export AIXTHREAD_SCOPE=S umask 022
if [ -t 0 ]; then stty intr ^C fi
节点2 ycweb2
[grid@ycweb2 ~]$ 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 DISPLAY=:0.0 export TEMP=/tmp export TMPDIR=/tmp
export ORACLE_BASE=/rdbm/orasrv
export ORA_CRS_HOME=$ORACLE_BASE/product/10g/crs export CRS_HOME=$ORA_CRS_HOME
export ORACLE_HOME=$ORACLE_BASE/product/10g/db export ORACLE_OWNER=orasrv export ORACLE_SID=orcl1 export ORACLE_TERM=vt100
export PATH=$ORACLE_HOME/bin:$ORACLE_HOME/Apache/bin:.:$PATH export
LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib:$ORACLE_HOME/rdbms/lib:$ORA_CRS_HOME/lib:/usr/local/lib
#export NLS_LANG=american_america.zhs16gbk export NLS_LANG=American_America.ZHS16GBK
export ORA_NLS33=$ORACLE_HOME/ocommon/nls/admin/data
export
PATH=$PATH:.:$ORACLE_HOME/bin:$ORA_CRS_HOME/bin:/usr/bin:/sbin:$ORACLE_HOME/OPatch
set -o emacs
export AIXTHREAD_SCOPE=S umask 022
if [ -t 0 ]; then stty intr ^C fi
4）确认网络配置正确
[root@ycweb1 ~]# ping ycweb1
[root@ycweb1 ~]# ping ycweb1-priv [root@ycweb1 ~]# ping ycweb2
[root@ycweb1 ~]# ping ycweb2-priv [root@ycweb2 ~]# ping ycweb2
[root@ycweb2 ~]# ping ycweb2-priv [root@ycweb2 ~]# ping ycweb1 [root@ycweb2 ~]# ping ycweb1-priv
5）Hangcheck-timer设置
修改文件/etc/rc.d/rc.local
增加以下内容：modprobe hangcheck-timer hangcheck_tick=30 hangcheck_margin=180 执行命令使其生效: modprobe -v hangcheck-timer
三、配置裸设备
1）对磁盘进行分区
由于linux6.2下，裸设备必须基于磁盘的逻辑分区才能进行创建，因此需要提前对磁盘进行分区。阵列安装完成后，不同的存储厂家根据存储软件的不同，在/dev下会生成不同的设备文件，具体到本现场，使用的是EMC的存储，因此阵列安装完成后，在/dev目录下生成了/dev/emcpowerb /dev/emcpowerc ……等文件，我们需要做的就是根据现场需求，对这些磁盘设备进行分区操作，比如：
[root@ycweb1 ~]#fdisk /dev/emcpowerf Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel with disk identifier 0x9755c97b.
Changes will remain in memory only, until you decide to write them. After that, of course, the previous content won't be recoverable.
Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite)
WARNING: DOS-compatible mode is deprecated. It's strongly recommended to switch off the mode (command 'c') and change display units to