ubuntu安装oracle

1.Setup system enviroment
    (1)install some system requriments
    expect the gcc, make
    sudo apt-get install build-essential libaio1 gawk ksh libmotif3 alien libtool lsb-rpm
    (2)make some symlinks
    ln -s /usr/bin/awk /bin/awk
    ln -s /usr/bin/rpm /bin/rpm
    ln -s /usr/bin/basename /bin/basename

2.Config the group and user
    addgroup oinstall
    addgroup dba
    addgroup nobody
    useradd -g oinstall -G dba -s /bin/bash -m oracle
    useradd -g nobody nobody

3. Tweak the system default limits
    (1)vi /etc/sysctl.conf, add below to the end

    # sets the maximum number of open files that can be handled by the Linux kernel.
    fs.file-max = 65535
    # determines the total amount of shared memory to be allocated in pages. In this example, I’ve set it to 8GB, which is way above the amount of memory I can handle in my box, even with swap.
kernel.shmall = 2097152
    # controls the maximum amount of memory to be allocated for shared memory which in this example is 2GB.
    kernel.shmmax = 2147483648
    # defines the maximum number of segments system-wide.
    kernel.shmmni = 4096
    kernel.sem = 250 32000 100 128
    net.ipv4.ip_local_port_range = 1024 65000
    # define the default and maximum read buffer queue for network operations
    net.core.rmem_default = 1048576
    net.core.rmem_max = 1048576
    # define the default and maximum write buffer queue for network operations
    net.core.wmem_default = 262144
    net.core.wmem_max = 262144

    after modifed the /etc/sysctl.conf, use the command
    sysctl -p

    ipcs -ls, you will see

    ------ Semaphore Limits --------
    max number of arrays = 128
    max semaphores per array = 250
    max semaphores system wide = 32000
    max ops per semop call = 100
    semaphore max value = 32767

4.Set up Oracle Env
    e.g.
    export ORACLE_BASE=/opt/oracle
    export ORACLE_HOME=$ORACLE_BASE/ora11
    export ORACLE_OWNER=oracle
    export ORACLE_SID=orcl
    export ORACLE_TERM=xterm
    export PATH=$ORACLE_HOME/bin:$PATH

5.Install
    chown -R oracle:oinstall /opt/oracle
    ./runInstaller -jreLoc /usr/share/java -ignoreSysPrereqs
    note that there is some difference between Oracle 10g and Oracle 11g, be careful for it

6.Remark
    (1)please care some files:
    /etc/oraInst.loc: oracle install config
    /etc/oratab: oracle dbstart config
    /var/tmp/.oracle: oracle lsnrctl need to read and write