RedHat Enterprise Linux as 5.4上安裝Oracle 10g 10.2.0 .1.0
1.檢視linux核心版本和發行版本，預設oracle10不支援rhel5，所以需要修改/etc/issue檔案，將5.4改為“4.4”
[oracle@oraserver ~]$ uname -r
2.6.18 -164.el5
[oracle@oraserver ~]$ cat /etc/issue
Red Hat Enterprise Linux Server release 5.4 (Tikanga) ##改為4.4
Kernel
on an m
[oracle@oraserver ~]$ cat /etc/issue.net
Red Hat Enterprise Linux Server release 5.4 (Tikanga) ##改為4.4
Kernel
on an m
2.建立oracle安裝目錄和oracle軟體包目錄，如下圖
[root@oraserver ~]# mkdir -p /ora10g /progame/oracle 準備做安裝目錄
[root@oraserver ~]# mkdir -p /oracle10g /data oracle軟體包目錄
3.建立用於安裝和維護 Oracle的 Linux 組和使用者帳戶。使用者帳戶將稱為 oracle，
[root@oraserver ~]# groupadd oinstall
[root@oraserver ~]# groupadd dba
[root@oraserver ~]# useradd -g oinstall -G dba oracle
[root@oraserver ~]# passwd oracle
Changing password for user oracle.
New UNIX password:
BAD PASSWORD: it is based on a dictionary word
Retype new UNIX password:
passwd: all authentication tokens updated successfully.
[root@oraserver ~]# chown -R oracle:oinstall /ora10g /oracle10g /
4. 配置 Linux 核心引數，因為是在虛擬機器環境，所以很多都規劃為較小的值，如果系統夠強大，可以根據情況規劃大點
[root@oraserver ora10g ]# vim /etc/sysctl.conf
# Kernel sysctl configuration file for Red Hat Linux#
# For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and
# sysctl.conf(5) for more details.
# Controls IP packet forwarding
net.ipv4.ip_forward = 0
# Controls source route verification
net.ipv4.conf.default.rp_filter = 1
# Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0
# Controls the System Request debugging functionality of the kernel
# Kernel sysctl configuration file for Red Hat Linux#
# For binary values, 0 is disabled, 1 is enabled. See sysctl(8) and
# sysctl.conf(5) for more details.
# Controls IP packet forwarding
net.ipv4.ip_forward = 0
# Controls source route verification
net.ipv4.conf.default.rp_filter = 1
# Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0
# Controls the System Request debugging functionality of the kernel
kernel.sysrq = 0
# Controls whether core dumps will append the PID to the core filename
# Useful for debugging multi-threaded applications
kernel.core_uses_pid = 1
# Controls the use of TCP syncookies
net.ipv4.tcp_syncookies = 1
# Controls the maximum size of a message, in bytes
kernel.msgmnb = 65536
# Controls the default maxmimum size of a mesage queue
kernel.msgmax = 65536
# Controls the maximum shared segment size, in bytes
#kernel.shmmax = 4294967295
# Controls the maximum number of shared memory segments, in pages
#kernel.shmall = 268435456
kernel.shmall = 2097152 表示系統一次可以使用的共享記憶體總量（以頁為單位，）。
kernel.shmmni = 4096 表示設定系統範圍內單個共享記憶體段的最小值。
kernel.shmmax = 2147483648 該引數定義了共享記憶體段的最大尺寸（以位元組為單位）。
fs.file-max = 65536 表示檔案控制程式碼的最大數量。
kernel.sem = 250 32000 100 128 sem 4個引數依次是
net.core.rmem_default = 1048576 預設的接收視窗大小
net.core.rmem_max = 262144 接收視窗的最大大小
net.core.wmem_default = 262144 預設的傳送視窗大小
net.core.wmem_max = 262144 傳送視窗的最大大小
net.ipv4.ip_local_port_range = 1024 65000 表示埠範圍