Install Oracle(Two) - Oracle11g on Ubuntu Linux 8

作者佚名技术来源 Linux系统浏览发布时间 2012-04-30

took about 3.4 GB on disk (without the starter database!). As your database grows, it will need more space. Reserve a total of at least 6 GB for the unpacked installer and the basic installation. You can get rid of the installer files afterwards.

# sudo mkdir -p /opt/oracle

Step Three Add a few users and change groups to make the installer more comfortable. Remember, we are tricking the installer to think it’s installing on a Red Hat box.

# sudo addgroup oinstall

# sudo addgroup dba

# sudo addgroup nobody


拥有帝国一切，皆有可能。欢迎访问phome.net# sudo useradd -g oinstall -G dba -p password -d /home/oracle -s /bin/bash -m oracle

# sudo usermod -g nobody nobody

The usermod command is needed since because when running, the installer looks for a user called nobody which is part of a group named nobody (in Ubuntu, the user nobody it’s assigned to nogroup by default). Step Four Make some symlinks. Apparently, the installer uses absolute paths, so it must find the binaries in the right places.

# sudo ln -s /usr/bin/awk /bin/awk

#sudo  ln -s /usr/bin/rpm /bin/rpm

# sudo ln -s /usr/bin/basename /bin/basename

Step Five We need to mimic the /etc/rc.d directory structure of a Red Hat box. We do this with more symlinks:

#sudo mkdir /etc/rc.d

#sudo  ln -s /etc/rc0.d /etc/rc.d/rc0.d

#sudo ln -s /etc/rc1.d /etc/rc.d/rc1.d

#sudo  ln -s /etc/rc2.d /etc/rc.d/rc2.d

#sudo  ln -s /etc/rc3.d /etc/rc.d/rc3.d

#sudo  ln -s /etc/rc4.d /etc/rc.d/rc4.d

#sudo  ln -s /etc/rc5.d /etc/rc.d/rc5.d

#sudo  ln -s /etc/rc6.d /etc/rc.d/rc6.d

#sudo  ln -s /etc/init.d /etc/rc.d/init.d

Step Six I’ve created a file called /etc/redhat-release and put only one line on it. The same can be achieved by issuing the following as root:

echo "Red Hat Linux release 4" > /etc/redhat-release

Note: 1.It doesn''t work. Please do it in another way. (1) sudo vi /etc/redhat-release (2) Input Red Hat Linux release 4" Step Seven We tweak the system default limits on a few items. The shared-memory are specially important, since Oracle relies on shared memory for process communications. There is a file called 拥有帝国一切，皆有可能。欢迎访问phome.net/etc/sysctl.conf and it should have these lines on it:

fs.file-max = 65535

kernel.shmall = 2097152

kernel.shmmax = 2147483648

kernel.shmmni = 4096

kernel.sem = 250 32000 100 128

net.ipv4.ip_local_port_range = 1024 65000

net.core.rmem_default = 1048576

net.core.rmem_max = 1048576

net.core.wmem_default = 262144

net.core.wmem_max = 262144

Now that they are in a config file, these limits will be issued automatically at the next boot sequence. For now, we need to make the system re-read the config file:

# sysctl -p

Now, what do those parameters and values actually mean?

fs.file-max sets the maximum number of open files that can be handled by the Linux kernel.
kernel.shmall determines the total amount of shared memory to be allocated in pages. In this example, I’ve set it to 8GB, which is way a

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