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Oracle RAC 搭建步骤详解
前期准备：
数据库:11.2.0.4
OS：Centos 6.8
IP分配：
#publice ip
192.168.180.2 rac1
192.168.180.3 rac2
#private ip
10.10.10.2 rac1-priv
10.10.10.3 rac2-priv
#vip
192.168.180.4 rac1-vip
192.168.180.5 rac2-vip
#scan ip
192.168.180.6 rac-scan
RAC 存储配置：
OCR_VOTING 3个 4G
DATA 1个 50G
FRA_ARC 1个 20G
1. 配置udev（所有节点）
关于RAC 共享存储可参考：http://blog.csdn.net/shiyu1157758655/article/details/56837550
用如下脚本获取绑定脚本：注意这里的 c d e f g是要作为共享的存储的磁盘，要根据自己实际情况修改。
for i in c d e f g ;
do
echo "KERNEL==\"sd*\", BUS==\"scsi\",PROGRAM==\"/sbin/scsi_id --whitelisted --replace-whitespace--device=/dev/\$name\", RESULT==\"`/sbin/scsi_id --whitelisted--replace-whitespace --device=/dev/sd$i`\", NAME=\"asm-disk$i\",OWNER=\"grid\", GROUP=\"asmadmin\",MODE=\"0660\"" >> /etc/udev/rules.d/99-oracle-asmdevices.rules
done
重启start_udev
2. 添加组和用户（所有节点）
groupadd -g 1000 oinstall
groupadd -g 1200 asmadmin
groupadd -g 1201 asmdba
groupadd -g 1202 asmoper
groupadd -g 1300 dba
groupadd -g 1301 oper
useradd -m -u 1100 -g oinstall -Gasmadmin,asmdba,asmoper,dba -d /home/grid-s /bin/bash grid
useradd -m -u 1101 -g oinstall -Gdba,oper,asmdba -d /home/oracle -s/bin/bash oracle
--将用户grid添加到dba组：
[root@rac1 app]# gpasswd -a grid dba
Adding user grid to group dba
--确认用户信息：
[root@rac1 ~]# id oracle
uid=502(oracle)gid=507(oinstall)groups=507(oinstall),502(dba),503(oper),506(asmdba)
[root@rac1 ~]# id grid
uid=1100(grid) gid=507(oinstall)groups=507(oinstall),504(asmadmin),506(asmdba),505(asmoper)
--修改密码：
passwd oracle
passwd grid
3. 禁用防火墙和SELNUX（所有节点）
关闭防火墙：
service iptables status
service iptables stop
chkconfig iptables off
chkconfig iptables –list
设置/etc/selinux/config 文件，将SELINUX设置为disabled。
[root@rac1 ~]# cat/etc/selinux/config
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
# enforcing - SELinux securitypolicy is enforced.
# permissive - SELinux printswarnings instead of enforcing.
# disabled - No SELinux policyis loaded.
SELINUX=disabled
# SELINUXTYPE= can take one of these two values:
# targeted - Targeted processesare protected,
# mls - Multi Level Securityprotection.
SELINUXTYPE=targeted
4. 配置时间同步(所有节点)
这里我们使用CTSS.所以要停用 NTP 服务，并从初始化序列中禁用该服务，并删除 ntp.conf 文件。以 root 用户身份在两个 OracleRAC 节点上运行以下命令：
[root@rac1 ~]# /sbin/service ntpd stop
Shutting down ntpd: [ OK ]
[root@rac1 ~]# chkconfig ntpd off
[root@rac1 ~]# mv /etc/ntp.conf/etc/ntp.conf.original
[root@rac1 ~]# chkconfig ntpd --list
ntpd 0:off 1:off 2:off 3:off 4:off 5:off 6:off
还要删除以下文件：
rm /var/run/ntpd.pid
此文件保存了 NTP 后台程序的 pid
5. 创建目录结构（所有节点）
Inventory 目录：/u01/app/oraInventory
ORACLE BASE 目录：/u01/app/oracle
Grid Infrastructure HOME 目录：/u01/app/grid/product/11.2.0/grid_1
RDBMS HOME 目录：/u01/app/oracle/product/11.2.0/db_1
配置相关目录的属主及权限
Inventory 目录：属主，grid:oinstall；权限，775
ORACLE BASE 目录：属主，oracle:oinstall；权限，775
Grid Infrastructure HOME 目录：属主，grid:oinstall；权限，775
RDBMS HOME 目录：属主，oracle:oinstall；权限，775
mkdir -p/u01/app/oraInventory
mkdir -p/u01/app/oracle
mkdir -p/u01/app/grid/product/11.2.0/grid_1
mkdir -p/u01/app/oracle/product/11.2.0/db_1
[root@rac1 ~]#chown -R grid:oinstall /u01/app/oraInventory/
[root@rac1 ~]#chown -R oracle:oinstall /u01/app/oracle/
[root@rac1 ~]#chown -R grid:oinstall /u01/app/grid/product/12.1.0/grid_1/
[root@rac1 ~]#chown -R oracle:oinstall /u01/app/oracle/product/12.1.0/db_1/
6. 配置主机/etc/hosts 别名（所有节点）
如果需要没有计划采用 DNS 服务器，需要在服务器本地配置服务器主机名与 IP 地址的映射
关系。具体涉及的主要配置文件为：
/etc/hosts
该配置文件主要的配置信息建议如下
127.0.0.1 localhost //记住这个一定要加上
#public ip
192.168.180.2 rac1
192.168.180.3 rac2
#private ip
10.10.10.2 rac1-priv
10.10.10.3 rac2-priv
#vip
192.168.180.4 rac1-vip
192.168.180.5 rac2-vip
#scan ip
192.168.180.6 rac-scan
注意：除了本机主机名映射地址条目外，两个节点的/etc/hosts 配置文件需要一致。上述建议
信息中：public ip、virtual ip、scan 为提供服务的 ip；privateip 为心跳私有 ip
7. 配置节点互信机制（所有节点）
需要将 grid 用户、oracle 用户配置好集群节点之间的互信机制。配置集群节点互信机制建议
采用ssh 协议。主要涉及的配置文件有：
$HOME/.ssh/authorized_keys
注意：此文件需要手工创建。
具体可参考：http://blog.csdn.net/shiyu1157758655/article/details/56838603
8. 配置环境变量（所有节点）
需要对 grid 用户、oracle 用户配置好环境变量。
grid 用户的环境变量配置建议如下：
umask 022
PS1='$ORACLE_SID'":"'$PWD'"@"`hostname`">"
ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE
ORACLE_HOME=/u01/app/grid/product/11.2.0/grid_1; export ORACLE_HOME
ORACLE_SID=+ASM1; export ORACLE_SID
ORACLE_TERM=xterm; export ORACLE_TERM
TMPDIR=/var/tmp; export TMPDIR
NLS_DATE_FORMAT="YYYY/MM/DD hh24:mi:ss"; export NLS_DATE_FORMAT
ORA_NLS33=$ORACLE_HOME/ocommon/nls/admin/data; export ORA_NLS33
TNS_ADMIN=$ORACLE_HOME/network/admin; export TNS_ADMIN DISPLAY
LIBPATH=$ORACLE_HOME/lib; export LIBPATH
PATH=$PATH:$ORACLE_HOME/bin:/usr/sbin; export PATH
Oracle用户的环境变量配置建议如下：
umask 022
PS1='$ORACLE_SID'":"'$PWD'"@"`hostname`">"
ORACLE_BASE=/u01/app/oracle_base; export ORACLE_BASE
ORACLE_HOME=$ORACLE_BASE/product/11.2.0/db_1; export ORACLE_HOME
ORACLE_SID=rac1; export ORACLE_SID
ORACLE_TERM=xterm; export ORACLE_TERM
TMPDIR=/var/tmp; export TMPDIR
NLS_DATE_FORMAT="YYYY/MM/DD hh24:mi:ss"; export NLS_DATE_FORMAT
ORA_NLS33=$ORACLE_HOME/ocommon/nls/admin/data; export ORA_NLS33
TNS_ADMIN=$ORACLE_HOME/network/admin; export TNS_ADMIN DISPLAY
LIBPATH=$ORACLE_HOME/lib; export LIBPATH
PATH=$PATH:$ORACLE_HOME/bin:/usr/sbin; export PATH
9. 修改/etc/security/limits.conf（所有节点）
以 root 用户身份，在每个 OracleRAC 节点上，在 /etc/security/limits.conf 文件中添加如下内容，或者执行执行如下命令：
root@rac1 ~]# cat >> /etc/security/limits.conf <<EOF
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
EOF
10. 修改/etc/pam.d/login（所有节点）
在每个 OracleRAC 节点上，在/etc/pam.d/login 文件中添加或编辑下面一行内容：
[root@rac1 ~]# cat >> /etc/pam.d/login <<EOF
session required pam_limits.so
EOF
11. 配置系统默认 profile （所有节点）
确认以下配置加载到系统的默认 profile 中。具体涉及到的主要配置文件如下：
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
12. 修改/etc/sysctl.conf（所有节点）
#vi /etc/sysctl.conf
kernel.shmmax = 4294967295
kernel.shmall = 2097152
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 6815744
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=1048576
fs.aio-max-nr=1048576
kernel.panic_on_oops=1
使修改的参数生效：
[root@rac1 ~]# sysctl -p
13. 安装前检查
+ASM1:/src/oracle/grid@rac1>./runcluvfy.sh stage -pre crsinst -nrac1,rac2
Performing pre-checks for cluster services setup
Checking node reachability...
Node reachability check passed from node "rac1"
Checking user equivalence...
User equivalence check passed for user "grid"
Checking node connectivity...
Checking hosts config file...
Verification of the hosts config file successful
Node connectivity passed for subnet "192.168.180.0" with node(s)rac2,rac1
TCP connectivity check passed for subnet "192.168.180.0"
Node connectivity passed for subnet "10.10.10.0" with node(s)rac2,rac1
TCP connectivity check passed for subnet "10.10.10.0"
Interfaces found on subnet "192.168.180.0" that are likelycandidates for VIP are:
rac2 eth0:192.168.180.3
rac1 eth0:192.168.180.2
Interfaces found on subnet "10.10.10.0" that are likelycandidates for a private interconnect are:
rac2 eth1:10.10.10.3
rac1 eth1:10.10.10.2
Checking subnet mask consistency...
Subnet mask consistency check passed for subnet "192.168.180.0".
Subnet mask consistency check passed for subnet "10.10.10.0".
Subnet mask consistency check passed.
Node connectivity check passed
Checking multicast communication...
Checking subnet "192.168.180.0" for multicast communication withmulticast group "230.0.1.0"...
Check of subnet "192.168.180.0" for multicast communication withmulticast group "230.0.1.0" passed.
Checking subnet "10.10.10.0" for multicast communication withmulticast group "230.0.1.0"...
Check of subnet "10.10.10.0" for multicast communication withmulticast group "230.0.1.0" passed.
Check of multicast communication passed.
Checking ASMLib configuration.
Check for ASMLib configuration passed.
Total memory check passed
Available memory check passed
Swap space check passed
Free disk space check passed for "rac2:/var/tmp"
Free disk space check passed for "rac1:/var/tmp"
Check for multiple users with UID value 1100 passed
User existence check passed for "grid"
Group existence check passed for "oinstall"
Group existence check passed for "dba"
Membership check for user "grid" in group "oinstall"[as Primary] passed
Membership check for user "grid" in group "dba" passed
Run level check passed
Hard limits check passed for "maximum open file descriptors"
Soft limits check passed for "maximum open file descriptors"
Hard limits check passed for "maximum user processes"
Soft limits check passed for "maximum user processes"
System architecture check passed
Kernel version check passed
Kernel parameter check passed for "semmsl"
Kernel parameter check passed for "semmns"
Kernel parameter check passed for "semopm"
Kernel parameter check passed for "semmni"
Kernel parameter check passed for "shmmax"
Kernel parameter check passed for "shmmni"
Kernel parameter check passed for "shmall"
Kernel parameter check passed for "file-max"
Kernel parameter check passed for "ip_local_port_range"
Kernel parameter check passed for "rmem_default"
Kernel parameter check passed for "rmem_max"
Kernel parameter check passed for "wmem_default"
Kernel parameter check passed for "wmem_max"
Kernel parameter check passed for "aio-max-nr"
Package existence check passed for "make"
Package existence check passed for "binutils"
Package existence check passed for "gcc(x86_64)"
Package existence check passed for "libaio(x86_64)"
Package existence check passed for "glibc(x86_64)"
Package existence check passed for "compat-libstdc++-33(x86_64)"
Package existence check passed for "elfutils-libelf(x86_64)"
Package existence check failed for"elfutils-libelf-devel"
Check failed on nodes:
rac2,rac1
Package existence check passed for "glibc-common"
Package existence check passed for "glibc-devel(x86_64)"
Package existence check passed for "glibc-headers"
Package existence check passed for "gcc-c++(x86_64)"
Package existence check passed for "libaio-devel(x86_64)"
Package existence check passed for "libgcc(x86_64)"
Package existence check passed for "libstdc++(x86_64)"
Package existence check passed for "libstdc++-devel(x86_64)"
Package existence check passed for "sysstat"
Package existence check passed for "pdksh"
Package existence check passed for "expat(x86_64)"
Check for multiple users with UID value 0 passed
Current group ID check passed
Starting check for consistency of primary group of root user
Check for consistency of root user's primary group passed
Starting Clock synchronization checks using Network Time Protocol(NTP)...
NTP Configuration file check started...
No NTP Daemons or Services were found to be running
Clock synchronization check using Network Time Protocol(NTP) passed
Core file name pattern consistency check passed.
User "grid" is not part of "root" group. Check passed
Default user file creation mask check passed
Checking consistency of file "/etc/resolv.conf" across nodes
File "/etc/resolv.conf" does not have both domain and searchentries defined
domain entry in file "/etc/resolv.conf" is consistent acrossnodes
search entry in file "/etc/resolv.conf" is consistent acrossnodes
PRVF-5636 : The DNS response time for an unreachable nodeexceeded "15000" ms on following nodes: rac2,rac1
File "/etc/resolv.conf" is not consistent across nodes
Time zone consistency check passed
Pre-check for cluster services setup was unsuccessful on all the nodes.
要根据上面的检查去进行排查解决，如果没有配置DNS的话，
PRVF-5636 : The DNS response time for an unreachable nodeexceeded "15000" ms on following nodes: rac2,rac1
这个可以忽略。
14.安装grid
在节点1，用grid用户运行runInstaller。
             
[root@rac1app]# chown -R grid:oinstall oracle //2个节点都要执行
上面2个可以忽略
节点1上执行：
[root@rac1~]# /u01/app/oraInventory/orainstRoot.sh
Changing permissions of /u01/app/oraInventory.
Adding read,write permissions for group.
Removing read,write,execute permissions for world.
Changing groupname of /u01/app/oraInventory to oinstall.
The execution of the script is complete.
节点2上执行：
[root@rac2~]#/u01/app/oraInventory/orainstRoot.sh
Changingpermissions of /u01/app/oraInventory.
Addingread,write permissions for group.
Removingread,write,execute permissions for world.
Changinggroupname of /u01/app/oraInventory to oinstall.
Theexecution of the script is complete.
节点1上执行：
[root@rac1~]# /u01/app/grid/product/11.2.0/grid_1/root.sh
Performingroot user operation for Oracle 11g
Thefollowing environment variables are set as:
ORACLE_OWNER= grid
ORACLE_HOME= /u01/app/grid/product/11.2.0/grid_1
Enterthe full pathname of the local bin directory: [/usr/local/bin]:
Copying dbhome to /usr/local/bin ...
Copying oraenv to /usr/local/bin ...
Copying coraenv to /usr/local/bin ...
Creating/etc/oratab file...
Entrieswill be added to the /etc/oratab file as needed by
DatabaseConfiguration Assistant when a database is created
Finishedrunning generic part of root script.
Nowproduct-specific root actions will be performed.
Usingconfiguration parameter file:/u01/app/grid/product/11.2.0/grid_1/crs/install/crsconfig_params
Creatingtrace directory
Userignored Prerequisites during installation
InstallingTrace File Analyzer
Failedto create keys in the OLR, rc = 127, Message:
shared object file: No such file or directory
Failedto create keys in the OLR at/u01/app/grid/product/11.2.0/grid_1/crs/install/crsconfig_lib.pm line 7660.
duct/11.2.0/grid_1/crs/install/u01/app/grid/product/11.2.0/grid_1/crs/install/rootcrs.pl execution failed
这个报错是缺少包造成的，在2个节点上都安装这个包就行了，具体可参考：http://blog.csdn.net/shiyu1157758655/article/details/59486625
[root@rac1 ~]# rpm -ivh/os/Packages/compat-libcap1-1.10-1.x86_64.rpm
warning:/os/Packages/compat-libcap1-1.10-1.x86_64.rpm: Header V3 RSA/SHA256 Signature,key ID c105b9de: NOKEY
Preparing... ########################################### [100%]
1:compat-libcap1 ########################################### [100%]
再次执行：
[root@rac1~]# /u01/app/grid/product/11.2.0/grid_1/root.sh
Performingroot user operation for Oracle 11g
Thefollowing environment variables are set as:
ORACLE_OWNER= grid
ORACLE_HOME= /u01/app/grid/product/11.2.0/grid_1
Enterthe full pathname of the local bin directory: [/usr/local/bin]:
Thecontents of "dbhome" have not changed. No need to overwrite.
Thecontents of "oraenv" have not changed. No need to overwrite.
Thecontents of "coraenv" have not changed. No need to overwrite.
Entrieswill be added to the /etc/oratab file as needed by
DatabaseConfiguration Assistant when a database is created
Finishedrunning generic part of root script.
Nowproduct-specific root actions will be performed.
Usingconfiguration parameter file:/u01/app/grid/product/11.2.0/grid_1/crs/install/crsconfig_params
Userignored Prerequisites during installation
InstallingTrace File Analyzer
OLRinitialization - successful
root wallet
root wallet cert
root cert export
peer wallet
profile reader wallet
pa wallet
peer wallet keys
pa wallet keys
peer cert request
pa cert request
peer cert
pa cert
peer root cert TP
profile reader root cert TP
pa root cert TP
peer pa cert TP
pa peer cert TP
profile reader pa cert TP
profile reader peer cert TP
peer user cert
pa user cert
AddingClusterware entries to upstart
CRS-2672:Attempting to start 'ora.mdnsd' on 'rac1'
CRS-2676:Start of 'ora.mdnsd' on 'rac1' succeeded
CRS-2672:Attempting to start 'ora.gpnpd' on 'rac1'
CRS-2676:Start of 'ora.gpnpd' on 'rac1' succeeded
CRS-2672:Attempting to start 'ora.cssdmonitor' on 'rac1'
CRS-2672:Attempting to start 'ora.gipcd' on 'rac1'
CRS-2676:Start of 'ora.gipcd' on 'rac1' succeeded
CRS-2676:Start of 'ora.cssdmonitor' on 'rac1' succeeded
CRS-2672:Attempting to start 'ora.cssd' on 'rac1'
CRS-2672:Attempting to start 'ora.diskmon' on 'rac1'
CRS-2676:Start of 'ora.diskmon' on 'rac1' succeeded
CRS-2676:Start of 'ora.cssd' on 'rac1' succeeded
ASMcreated and started successfully.
DiskGroup OCR_VOTING created successfully.
clscfg:-install mode specified
Successfullyaccumulated necessary OCR keys.
CreatingOCR keys for user 'root', privgrp 'root'..
Operationsuccessful.
CRS-4256:Updating the profile
Successfuladdition of voting disk 5ddc4ea587f04f18bfb066d1d3ff07d9.
Successfuladdition of voting disk 64611da725794f0ebf206204283eff9a.
Successfuladdition of voting disk 46a2f2c1a5a14f4fbf58e6505f889674.
Successfullyreplaced voting disk group with +OCR_VOTING.
CRS-4256:Updating the profile
CRS-4266:Voting file(s) successfully replaced
## STATE File Universal Id File Name Disk group
-- ----- ----------------- --------- ---------
1. ONLINE 5ddc4ea587f04f18bfb066d1d3ff07d9 (/dev/asm-diskc) [OCR_VOTING]
2. ONLINE 64611da725794f0ebf206204283eff9a (/dev/asm-diskd) [OCR_VOTING]
3. ONLINE 46a2f2c1a5a14f4fbf58e6505f889674 (/dev/asm-diske) [OCR_VOTING]
Located3 voting disk(s).
CRS-2672:Attempting to start 'ora.asm' on 'rac1'
CRS-2676:Start of 'ora.asm' on 'rac1' succeeded
CRS-2672:Attempting to start 'ora.OCR_VOTING.dg' on 'rac1'
CRS-2676:Start of 'ora.OCR_VOTING.dg' on 'rac1' succeeded
ConfigureOracle Grid Infrastructure for a Cluster ... succeeded
节点2上执行：
[root@rac2~]# /u01/app/grid/product/11.2.0/grid_1/root.sh
Performingroot user operation for Oracle 11g
Thefollowing environment variables are set as:
ORACLE_OWNER= grid
ORACLE_HOME= /u01/app/grid/product/11.2.0/grid_1
Enterthe full pathname of the local bin directory: [/usr/local/bin]:
Copying dbhome to /usr/local/bin ...
Copying oraenv to /usr/local/bin ...
Copying coraenv to /usr/local/bin ...
Creating/etc/oratab file...
Entrieswill be added to the /etc/oratab file as needed by
DatabaseConfiguration Assistant when a database is created
Finishedrunning generic part of root script.
Nowproduct-specific root actions will be performed.
Usingconfiguration parameter file:/u01/app/grid/product/11.2.0/grid_1/crs/install/crsconfig_params
Creatingtrace directory
Userignored Prerequisites during installation
InstallingTrace File Analyzer
OLRinitialization - successful
AddingClusterware entries to upstart
terminating
Anactive cluster was found during exclusive startup, restarting to join thecluster
ConfigureOracle Grid Infrastructure for a Cluster ... succeeded
点击ok继续安装：
这里有个报错，我选择忽略掉，貌似没啥影响。
到此grid已经安装成功。
15. 创建ASM磁盘组
以grid用户登陆，执行asmca
选择【create】
16. 安装Oracle RDBMS软件
在创建完磁盘组之后，即可安装RDBMS软件
注意：安装RDBMS软件，需要使用oracle用户创建
./runInstaller
这里仅安装软件
忽略上面2个报错
点击安装即可
17. 创建数据库
以oracle用户执行dbca
点击执行即可
18. 总结
到此oracle11g rac 安装完成，期间遇到的各种问题，需要耐心的一个个解决。
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作者：雨丶花丶石
来源：CSDN
原文：https://blog.csdn.net/shiyu1157758655/article/details/60132402
版权声明：本文为博主原创文章，转载请附上博文链接！
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