From: http://blog.csdn.net/wjcreator123/article/details/3243041
下面提供的是Oracle 11g的下载地址和基本安装过程（仅作参考）
第一步：
oracle服务端下载: http://down.zdnet.com.cn/detail/9/82225.shtml
客户端: http://blog.csdn.net/zongyongchun/archive/2007/11/06/1869672.aspx
第二步：
基本都是按部就班。
使用的OS版本：OEL4
[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) |
安装程序路径：
| /mnt/Oracle11g_linux_x86_64/database |
创建用户
| 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 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 使用xclock检查display正确： shahand 上传了这个图片: 
| [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 
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prerequireme nts检查的时候，安装程序认为swap不足，我选择YES忽略 
| [oracle@ractest database]$
[orac
le@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 Oracle 11g 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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