http://wmdata.com.cn/oracle/11g/index.html
Oracle11g从去年年底发布至今已经有一段时间了，我可以说也算首批体验Oracle11g的客户了吧，也许是对Oracle11g的太期待，所以他还没发布我就了解了好多好多Oracle11g的新特性和很多关于它的新技术，现对Oracle11g的安装作一下介绍，希望能对初学者或了解不深的客户有所帮助
我使用的OS版本是：OEL4
以下是引用片段：
[oracle@ractest orcl]$ cat /etc/redhat-release
Enterprise Linux Enterprise Linux AS release 4 (October Update 5)
[oracle@ractest orcl]$ cat /etc/enterprise-release
Enterprise Linux Enterprise Linux AS release 4 (October Update 5)
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安装程序路径：
/mnt/Oracle11g_linux_x86_64/database
创建用户
以下是引用片段：
groupadd -g 1001 dba
groupadd -g 1002 oinstall
useradd -u 10000 -g dba -G oinstall,dba -d /home/oracle -s /bin/bash oracle
chown -R oracle:dba /home/oracle
usermod -g dba -G oinstall,dba oracle
使用的.bash_profile
export ORACLE_BASE=/home/oracle
export ORACLE_HOME=$ORACLE_BASE/11g
export ORA_CRS_HOME=$ORACLE_BASE/crs
export ORACLE_PATH=$ORACLE_BASE/common/oracle/sql:.:$ORACLE_HOME/rdbms/admin
export ORACLE_SID=orcl1
export PATH=$ORACLE_HOME/bin:$ORA_CRS_HOME/bin:${PATH}:$HOME/bin
export PATH=${PATH}:/usr/bin:/bin:/usr/bin/X11:/usr/local/bin
export PATH=${PATH}:$ORACLE_BASE/common/oracle/bin
export ORACLE_TERM=xterm
export TNS_ADMIN=$ORACLE_HOME/network/admin
export ORA_NLS10=$ORACLE_HOME/nls/data
export LD_LIBRARY_PATH=${LD_LIBRARY_PATH}:/lib:/usr/lib:/usr/local/lib:$ORACLE_HOME/oracm/lib:$ORACLE_HOME/lib
export LIBPATH=$LIBPATH:$ORA_CRS_HOME/lib:$ORACLE_HOME/lib
export CLASSPATH=${CLASSPATH}:$ORACLE_HOME/rdbms/jlib:$ORACLE_HOME/jlib:$ORACLE_HOME/network/jlib:$ORACLE_HOME/JRE
export THREADS_FLAG=native
export TEMP=/tmp
export TMPDIR=/tmp
export NLS_LANG=american_america.WE8ISO8859P1
export DISPLAY=10.198.90.55:2
alias sysdba="sqlplus '/as sysdba'"
export EDITOR=vi
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修改的核心参数
以下是引用片段：
kernel.shmall = 2097152
kernel.shmmax = 2147483648
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.wmem_default=262144
net.core.rmem_max=262144
net.core.wmem_max=262144
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使用xclock检查display正确：
以下是引用片段：
[oracle@ractest ~]$ xclock
[oracle@ractest ~]$ /mnt/Oracle11g_linux_x86_64/database
[oracle@ractest ~]$ cd /mnt/Oracle11g_linux_x86_64/database
[oracle@ractest database]$ ls -l
total 10
drwxr-xr-x 4 1003 oinstall 96 Mar 23 18:45 doc
drwxr-xr-x 5 1003 oinstall 1024 Mar 23 18:45 install
drwxr-xr-x 2 1003 oinstall 1024 Mar 23 18:45 response
-rwxr-xr-x 1 1003 oinstall 1251 Mar 23 18:45 runInstaller
drwxr-xr-x 12 1003 oinstall 1024 Mar 23 18:45 stage
-rw-r--r-- 1 1003 oinstall 4638 Mar 23 18:45 welcome.html
[oracle@ractest database]$ ./runInstaller
Starting Oracle Universal Installer...
Checking installer requirements...
Checking operating system version: must be redhat-3, SuSE-9, redhat-4, UnitedLinux-1.0, asianux-1 or asianux-2
Passed
All installer requirements met.
Preparing to launch Oracle Universal Installer from /tmp/OraInstall2007-06-28_02-26-12AM. Please wait ...[oracle@ractest database]$ Oracle Universal Installer, Version 11.1.0.2.0 Production
Copyright (C) 1999, 2007, Oracle. All rights reserved.
Oracle Universal Installer, Version 11.1.0.2.0 Production
Copyright (C) 1999, 2007, Oracle. All rights reserved.
启动图形以后选择ba
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选择oracle base的时候，oracle不推荐使用user home作为oracle base，这里我选yes忽略 
进行prerequirements检查的时候，安装程序认为swap不足，我选择YES忽略
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以下是引用片段：
[oracle@ractest database]$
[oracle@ractest database]$ su - root
Password:
[root@ractest ~]# /home/oracle/oraInventory/orainstRoot.sh
Changing permissions of /home/oracle/oraInventory to 770.
Changing groupname of /home/oracle/oraInventory to dba.
The execution of the script is complete
[root@ractest ~]# /home/oracle/11g/root.sh
Running Oracle11g root.sh script...
The following environment variables are set as:
ORACLE_OWNER= oracle
ORACLE_HOME= /home/oracle/11g
Enter the 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...
Entries will be added to the /etc/oratab file as needed by
Database Configuration Assistant when a database is created
Finished running generic part of root.sh script.
Now product-specific root actions will be performed.
Finished product-specific root actions.
[root@ractest ~]#
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通过这个例子你可以十分清楚的了解Oracle11g的安装过程，诸多惊喜尽在Oracle11g，赶快加入我们的Oracle11g应用行列吧。
