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环境：OEL 5.7 + Oracle 10.2.0.5 RAC
如果你正在用 OEL（Oracle Enterprise Linux）系统部署 Oracle，那么可以使用 yum 安装 oracle-validated 包来简化主机配置的部分工作。
配置好 yum 本地源后，直接执行一条命令
yum install oracle-validated检查发现它会自动做以下几件事：
1）安装 oracle 依赖包
2）/etc/sysctl.conf 增加 oracle 用户内容
3）/etc/security/limits.conf 增加 oracle 用户内容
4）创建 Oracle 用户和相关组
这极大的简化了系统主机配置阶段我们要做的工作内容。
当然我们需要根据实际情况最好要确认 /etc/sysctl.conf /etc/security/limits.conf 内容合理性。
1. 安装 oracle 依赖包
yum install oracle-validated
[root@oradb28 yum.repos.d]# yum install oracle-validated
Loaded plugins: rhnplugin, security
This system is not registered with ULN.
ULN support will be disabled.
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package oracle-validated.x86_64 0:1.1.0-14.el5 set to be updated
ISO/filelists | 3.1 MB 00:00
--> Processing Dependency: gdb for package: oracle-validated
--> Processing Dependency: sysstat for package: oracle-validated
--> Processing Dependency: /usr/lib/libaio.so for package: oracle-validated
--> Processing Dependency: glibc-headers for package: oracle-validated
--> Processing Dependency: unixODBC-devel for package: oracle-validated
--> Processing Dependency: /usr/lib64/libodbccr.so for package: oracle-validated
--> Processing Dependency: gcc-c++ for package: oracle-validated
--> Processing Dependency: libaio-devel for package: oracle-validated
--> Processing Dependency: gcc for package: oracle-validated
--> Processing Dependency: elfutils-libelf-devel for package: oracle-validated
--> Processing Dependency: compat-gcc-34-c++ for package: oracle-validated
--> Processing Dependency: /usr/lib/gcc/x86_64-RedHat-linux/4.1.1/libstdc++.a for package: oracle-validated
--> Processing Dependency: /usr/lib/libodbc.so.1 for package: oracle-validated
--> Processing Dependency: compat-gcc-34 for package: oracle-validated
--> Processing Dependency: /usr/lib/libc.so for package: oracle-validated
--> Processing Dependency: /usr/lib64/libaio.so for package: oracle-validated
--> Processing Dependency: /usr/lib64/libc.so for package: oracle-validated
--> Processing Dependency: /usr/lib/libodbccr.so for package: oracle-validated
--> Processing Dependency: kernel-headers for package: oracle-validated
--> Processing Dependency: libXp.so.6 for package: oracle-validated
--> Processing Dependency: libdb-4.2.so()(64bit) for package: oracle-validated
--> Processing Dependency: libodbc.so.1()(64bit) for package: oracle-validated
--> Running transaction check
---> Package compat-db.x86_64 0:4.2.52-5.1 set to be updated
---> Package compat-gcc-34.x86_64 0:3.4.6-4.1 set to be updated
---> Package compat-gcc-34-c++.x86_64 0:3.4.6-4.1 set to be updated
---> Package elfutils-libelf-devel.x86_64 0:0.137-3.el5 set to be updated
--> Processing Dependency: elfutils-libelf-devel-static-x86_64 = 0.137-3.el5 for package: elfutils-libelf-devel
---> Package gcc.x86_64 0:4.1.2-51.el5 set to be updated
---> Package gcc-c++.x86_64 0:4.1.2-51.el5 set to be updated
---> Package gdb.x86_64 0:7.0.1-37.el5 set to be updated
---> Package glibc-devel.i386 0:2.5-65 set to be updated
---> Package glibc-devel.x86_64 0:2.5-65 set to be updated
---> Package glibc-headers.x86_64 0:2.5-65 set to be updated
---> Package kernel-uek-headers.x86_64 0:2.6.32-200.13.1.el5uek set to be updated
---> Package libXp.i386 0:1.0.0-8.1.el5 set to be updated
---> Package libaio-devel.i386 0:0.3.106-5 set to be updated
---> Package libaio-devel.x86_64 0:0.3.106-5 set to be updated
---> Package libstdc++-devel.x86_64 0:4.1.2-51.el5 set to be updated
---> Package sysstat.x86_64 0:7.0.2-11.el5 set to be updated
---> Package unixODBC.i386 0:2.2.11-7.1 set to be updated
---> Package unixODBC.x86_64 0:2.2.11-7.1 set to be updated
---> Package unixODBC-devel.i386 0:2.2.11-7.1 set to be updated
---> Package unixODBC-devel.x86_64 0:2.2.11-7.1 set to be updated
--> Running transaction check
---> Package elfutils-libelf-devel-static.x86_64 0:0.137-3.el5 set to be updated
--> Finished Dependency Resolution
Dependencies Resolved
===================================================================================================================================================================================================================
Package Arch Version Repository Size
===================================================================================================================================================================================================================
Installing:
oracle-validated x86_64 1.1.0-14.el5 ISO 24 k
Installing for dependencies:
compat-db x86_64 4.2.52-5.1 ISO 1.6 M
compat-gcc-34 x86_64 3.4.6-4.1 ISO 4.3 M
compat-gcc-34-c++ x86_64 3.4.6-4.1 ISO 13 M
elfutils-libelf-devel x86_64 0.137-3.el5 ISO 24 k
elfutils-libelf-devel-static x86_64 0.137-3.el5 ISO 64 k
gcc x86_64 4.1.2-51.el5 ISO 5.3 M
gcc-c++ x86_64 4.1.2-51.el5 ISO 3.8 M
gdb x86_64 7.0.1-37.el5 ISO 2.4 M
glibc-devel i386 2.5-65 ISO 2.0 M
glibc-devel x86_64 2.5-65 ISO 2.4 M
glibc-headers x86_64 2.5-65 ISO 594 k
kernel-uek-headers x86_64 2.6.32-200.13.1.el5uek ISO 724 k
libXp i386 1.0.0-8.1.el5 ISO 22 k
libaio-devel i386 0.3.106-5 ISO 12 k
libaio-devel x86_64 0.3.106-5 ISO 11 k
libstdc++-devel x86_64 4.1.2-51.el5 ISO 2.8 M
sysstat x86_64 7.0.2-11.el5 ISO 187 k
unixODBC i386 2.2.11-7.1 ISO 830 k
unixODBC x86_64 2.2.11-7.1 ISO 835 k
unixODBC-devel i386 2.2.11-7.1 ISO 743 k
unixODBC-devel x86_64 2.2.11-7.1 ISO 799 k
Transaction Summary
===================================================================================================================================================================================================================
Install 22 Package(s)
Upgrade 0 Package(s)
Total download size: 42 M
... 这里省略后面安装的输出提示，按提示输入 y 直接安装即可。2. /etc/sysctl.conf 增加 oracle 用户内容
cat /etc/sysctl.conf 确认如下是自动增加的内容：
# For 11g, Oracle-Validated setting for fs.file-max is 6815744
# For 10g, uncomment 'fs.file-max = 327679', and comment 'fs.file-max = 6553600' entry and re-run sysctl -p
# fs.file-max = 327679
fs.file-max = 6815744
# Oracle-Validated setting for kernel.msgmni is 2878
kernel.msgmni = 2878
# Oracle-Validated setting for kernel.msgmax is 8192
kernel.msgmax = 8192
# Oracle-Validated setting for kernel.msgmnb is 65536
kernel.msgmnb = 65536
# Oracle-Validated setting for kernel.sem is '250 32000 100 142'
kernel.sem = 250 32000 100 142
# Oracle-Validated setting for kernel.shmmni is 4096
kernel.shmmni = 4096
# Oracle-Validated setting for kernel.shmall is 1073741824
kernel.shmall = 1073741824
# Oracle-Validated setting for kernel.shmmax is 4398046511104 on x86_64 and 4294967295 on i386 architecture. Refer Note id 567506.1
kernel.shmmax = 4398046511104
# Oracle-Validated setting for kernel.sysrq is 1
kernel.sysrq = 1
# Oracle-Validated setting for net.core.rmem_default is 262144
net.core.rmem_default = 262144
# For 11g, Oracle-Validated setting for net.core.rmem_max is 4194304
# For 10g, uncomment 'net.core.rmem_max = 2097152', comment 'net.core.rmem_max = 4194304' entry and re-run sysctl -p
# net.core.rmem_max = 2097152
net.core.rmem_max = 4194304
# Oracle-Validated setting for net.core.wmem_default is 262144
net.core.wmem_default = 262144
# For 11g, Oracle-Validated setting for net.core.wmem_max is 1048576
# For 10g, uncomment 'net.core.wmem_max = 262144', comment 'net.core.wmem_max = 1048576' entry for this parameter and re-run sysctl -p
# net.core.wmem_max = 262144
net.core.wmem_max = 1048576
# Oracle-Validated setting for fs.aio-max-nr is 3145728
fs.aio-max-nr = 3145728
# For 11g, Oracle-Validated setting for net.ipv4.ip_local_port_range is 9000 65500
# For 10g, uncomment 'net.ipv4.ip_local_port_range = 1024 65000', comment 'net.ipv4.ip_local_port_range = 9000 65500' entry and re-run sysctl -p
# net.ipv4.ip_local_port_range = 1024 65000
net.ipv4.ip_local_port_range = 9000 65500
# Oracle-Validated setting for vm.min_free_kbytes is 51200 to avoid OOM killer
vm.min_free_kbytes = 51200可以看到每条内核参数都有清晰明了的注释，我这里是安装 10g RAC，那么就按照注释说明，将那些 For 10g 的参数启用即可。
3. /etc/security/limits.conf 增加 oracle 用户内容
cat /etc/security/limits.conf 确认如下是自动增加的内容：
# Oracle-Validated setting for nofile soft limit is 131072
oracle soft nofile 131072
# Oracle-Validated setting for nofile hard limit is 131072
oracle hard nofile 131072
# Oracle-Validated setting for nproc soft limit is 131072
oracle soft nproc 131072
# Oracle-Validated setting for nproc hard limit is 131072
oracle hard nproc 131072
# Oracle-Validated setting for core soft limit is unlimited
oracle soft core unlimited
# Oracle-Validated setting for core hard limit is unlimited
oracle hard core unlimited
# Oracle-Validated setting for memlock soft limit is 50000000
oracle soft memlock 50000000
# Oracle-Validated setting for memlock hard limit is 50000000
oracle hard memlock 50000000由于我接下来要安装 Oracle10g RAC，只用到一个 oracle 用户，所以这里不需要修改，如果你装的是 11g RAC，则需要手工添加 grid 用户的资源使用限制条目。
4. 创建 Oracle 用户和相关组
查看已经创建了 oracle 用户，组 oinstall 和 dba
[root@oradb28 cdrom]# id oracle
uid=54321(oracle) gid=54321(oinstall) groups=54321(oinstall),54322(dba) context=root:system_r:unconfined_t:SystemLow-SystemHigh安装 RAC 需要确定各节点 oracle 用户和组的 uid，gid 保持一致，由于它自动生成的 uid 和 gid 的对应数字很大，所以一般都一致。
这样一来，在 OEL 系统上安装 Oracle 前的主机配置系列工作将得到简化，我们不必再去过多的考虑需要哪些依赖包和内核参数设置的问题了。
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