How to Install Oracle 11g R2 Database on CentOS 6.x

February 27, 2014 | By the+gnu+linux+evangelist.

GNU/Linux CentOS 6.x Installing Oracle 11g DB – QuickStart Guide

Hi! This an Easy and Step-by-Step Guide on Installing the Oracle 11g R2 Database in CentOS 6.x GNU/Linux Desktop/Server.

And version 11g of the Oracle Database, which included built-in testing for changes, the capability of viewing Tables back in time, superior compression of all types of Data and enhanced disaster recovery functions.

The “g” stood for “Grid Computing,” which supports Clusters of Servers that are treated as a single unit.

The Process is somewhat Extended and Advanced so it Demand a Basic Command Line Confidence.

So Just Relax and Take the Time of Reading, Understanding and Executing Carefully the Instructions Contained here.

To the Post Bottom you Find Link to Oracle 11g Database Installation Troubleshooting Guides.

Finally, this Setup is Valid also for All the others Red Hat Linux Based Distros like:

  • Red Hat Enterprise Linux
  • Rocky Linux
  • AlmaLinux
  • Oracle Enterprise Linux
  • Scientific Linux
Install Oracle 11g DB on Linux CentOS 6.x - Featured
  1. Download the Oracle 11g R2 Database for Linux:
    Oracle 11g R2 .zip for Linux
    The Link Contains the List of Oracle 11g r2 Database Releases

  2. Open Terminal Window
    (Press “Enter” to Execute Commands) Or Login into Server Shell.

    Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 - GNOME Open Terminal

  3. Login as SuperUser:

    su 

  4. Make Network Configuration

    • Get hostname:

      hostname

    • Get IP:

      /sbin/ifconfig

      You will Find It Under the lo >> inet Section.

    • Check if Hostname is Already into the Enabled Hosts File.

      cat /etc/hosts
      If It’s Not Present then Insert it with:
      nano /etc/hosts

      Insert: <IP HOSTNAME>.

      Example: ‘127.0.0.1 localhost.localdomain’

      Ctrl+Shift+v to Paste Content on nano
      Ctrl+x to Save and Exit
      from nano Editor :)

    • Grant Connection to X Server

      xhost +<hostIP>
      Example: # xhost +127.0.0.1

  5. Installing Required Packages

    sudo yum install binutils glibc compat-libstdc++-33 glibc-common 
    glibc-devel glibc-headers elfutils-libelf elfutils-libelf-devel 
    elfutils gcc gcc-c++ ksh libaio libaio-devel libgcc libstdc++-devel 
    make numactl-devel sysstat mksh

  6. Add Groups and User

    groupadd -g 502 oinstall
    groupadd -g 503 dba
    groupadd -g 504 oper
    groupadd -g 505 asmadmin
    useradd -u 502 -g oinstall -G dba,asmadmin,oper oracle
    passwd oracle

  7. Make Target Directories

    mkdir -p /u01/app/oracle/product/11.2.0/
    chown -R oracle:oinstall /u01
    chmod -R 775 /u01

  8. Parameters Configuration SetUp

    • Edit /etc/sysctl.conf file.

      nano /etc/sysctl.conf
      Then hit Ctrl+x to Save and Exit from nano Editor Add or amend the following lines
      #### Oracle 11g Kernel Parameters ####
      fs.suid_dumpable = 1
      fs.aio-max-nr = 1048576
      fs.file-max = 6815744
      kernel.shmall = 818227
      kernel.shmmax = 4189323264
      kernel.shmmni = 4096
      kernel.panic_on_oops = 1
      # semaphores: semmsl, semmns, semopm, semmni
      kernel.sem = 250 32000 100 128
      net.ipv4.ip_local_port_range = 9000 65500
      net.core.rmem_default=262144
      net.core.rmem_max=4194304
      net.core.wmem_default=262144
      net.core.wmem_max=1048576
      
      The Values of ‘shmall’ and ‘shmmax’ Need to be Customized following your System Memory Size.
      Here above is a Valid Setup for a 8Gb RAM Size!
      If you need to Change first Check your Phisical Memory Size with:
      cat /proc/meminfo | grep MemTotal
      Then ‘shmall’ should be Set as:
      [RamKb] / 10
      And instead ‘shmmax’ as:
      [RamKb] * 1024 / 2
      For further Instructions See Oracle Documentation
      Comment out these lines below that Gives an Error
      #net.bridge.bridge-nf-call-ip6tables = 0
      #net.bridge.bridge-nf-call-iptables = 0
      #net.bridge.bridge-nf-call-arptables = 0

    • Edit /etc/security/limits.conf file.

      nano /etc/security/limits.conf
      Add the following lines
      #### oracle User Settings 4 Oracle 11g ####
      oracle       soft  nproc  2047
      oracle       hard  nproc  16384
      oracle       soft  nofile 1024
      oracle       hard  nofile 65536
      oracle       soft  stack  10240
      

    • Disable SELINUX

      nano /etc/selinux/config
      Disable Secure Linux by editing the /etc/selinux/config file, making sure the SELINUX flag is set as follows.
      SELINUX=disabled
      

    • Load the New Kernel Parameters

      /sbin/sysctl -p

  9. Unzip the Oracle 11g Database, Set oracle as Owner and Relocate it into the oracle’s Home

    cd </path/To/linux_11gR2*.zip>
    unzip linux_11gR2_database_1of2.zip
    unzip linux_11gR2_database_2of2.zip
    chown -R oracle:oinstall database
    mv database /tmp

  10. Add Environment Variables to oracle’s .bashrc
    Login as oracle User

    su oracle
    Edit .bashrc file
    nano ~/.bashrc
    Insert:
    # Oracle Settings
    TMP=/tmp; export TMP
    TMPDIR=$TMP; export TMPDIR
    
    ORACLE_HOSTNAME=<HOSTNAME>; export ORACLE_HOSTNAME
    ORACLE_UNQNAME=DB11G; export ORACLE_UNQNAME
    ORACLE_BASE=/u01/app/oracle; export ORACLE_BASE
    ORACLE_HOME=$ORACLE_BASE/product/11.2.0/dbhome_1; export ORACLE_HOME
    ORACLE_SID=<DBSID>; export ORACLE_SID
    
    PATH=/usr/sbin:$PATH; export PATH
    PATH=$ORACLE_HOME/bin:$PATH; export PATH
    
    LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib:/usr/lib64; export LD_LIBRARY_PATH
    CLASSPATH=$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib; export CLASSPATH
    
    Replace [HOSTNAME] with IP and [DBSID] with SID Name
    In this Example Respectively:
    • HOSTNAME = 127.0.0.1

    • DBSID = SID

    Load New .bashrc Settings

    source ~/.bashrc

    Last and Optional to Add Full Env-Integration edit also oracle’s .bashrc

    nano ~/.bashrc

    Inserting

    if [ -f ~/.bashrc ]; then
    source ~/.bashrc
    fi
    
  11. Installing the Oracle 11g Database Software

    cd /tmp/database
    ./runInstaller

    If you Get: “Check if the DISPLAY variable is set. Failed”. Look Link Below.

    Link2+ Oracle 11g Database Troubleshooting.

    Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 - Start Oracle 11g R2 Installation

    On the first screen Just Insert your email and Possibly Un-Check the Demand of Security Update Support then Click on Next
    Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 - Oracle 11g R2 Installation Step 1

    If Failed Connection Just Check Remain Uninformed and Follow-Up.
    Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 Oracle 11g R2 Installation Failed Connection

    On “Select Installation Option” Select “Install database software only” and Click on Next
    Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 Oracle 11g R2 Installation Step 2 .

    On Step 3 Leave Default “Single instance database installation” and Click on Next
    Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 Oracle 11g R2 Installation Step 3 .

    On Step 4 Select your Language and Click on Next
    Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 Oracle 11g R2 Installation Step 4 .

    On Step 5 Leave Default Enterprise Edition and Click on Next
    Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 Oracle 11g R2 Installation Step 5

    On “Installation Location” Set All As Here Below and Click on Next

    • Oracle Base: /u01/app/oracle

    • Software Location: /u01/app/oracle/product/11.2.0/dbhome_1

    .

    These are the Same Settings Inserted into the .bashrc File…

    Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 Oracle 11g R2 Installation Step 6 .

    On “Create Inventory” if you Setup the Path on .bashrc Like Here Leave Default and Click on Next
    Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 Oracle 11g R2 Installation Step 7 .

    On “Operating System Groups” if you Setup the Path on .bashrc Like Here Leave Default and Click on Next
    Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 Oracle 11g R2 Installation Step 8 .

    On “Prerequisite Checks” you will Get Easily a “Warning Message” about some Missing Requirements
    Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 Oracle 11g R2 Installation Step 9 .

    On the “Summary” Click on “Save Response File” to Take Note of Settings and then Click on Finish
    Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 Oracle 11g R2 Installation Step 10 .

    The Installation Product Procedure should Start…

  12. Executing Scripts

    Right Before the End of Process a Pop-Up Window will Show the Path to Two Configuration Scripts you Need to Execute on Terminal!

    Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 Oracle 11g R2 Installation Step 11

    Next Oracle Should Confirm you of the Successful Installation Achivement.) Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 Oracle 11g R2 Installation Step 12 .

  13. How to Create and Run an Oracle 11g Listener

    Oracle 11g DB Listener Guide

  14. Install Oracle 11g DB on Linux CentOS 6.x i686/x8664 Penguin Oracle 11g

  15. How to Create an Oracle 11g Database Instance

    Oracle 11g Database Guide
After you Should Access the “Enterprise Manager” on Browser by the URL shown on the Last Screen.
On a Localhost for Example you Should Access the Enterprise Manager by the Address:
https://127.0.0.1:1158/em
And you can Login with:
Username: SYS
Password: oracleDatabasePassword
From the Drop-down below Select >> Connect as SYSDBA
You Should be able to Access the Database by the Enterprise Manager!

How to Start and Stop All the Oracle 11g Database Components


  • Start the Oracle Listener, Database and Manager

    1. Login as Oracle User

      su oracle

    2. Start the Listner:

      lsnrctl start

    3. Start the Database process:

      sqlplus '/ as sysdba'
      Insert yourOracleAccountPassword
      >startup
      Wait until the database is Up!
      ORACLE instance started.
      ...
      Database opened.
      

      Exit from sqlplus

      >exit
    4. Start Database Manager Console

      emctl start dbconsole

    5. Access the Oracle Database Manager on Browser

      https://127.0.0.1:1158/em

  • Stop the Oracle Database

    1. Stop the Database process:

      sqlplus '/ as sysdba'
      >shutdown immediate
      >exit

    2. Stop the Listner:

      lsnrctl stop

  • How to Getting-Started with SQLPlus for Oracle 11g DB

    SQLPlus Oracle 11g Quick Start

If you have Several Oracle Databases Everytime Before to Start a New one you have to Set SID:
export ORACLE_SID=DbSID
Oracle 11g Database Troubleshooting Guides

Enjoy this “Step by Step” Clear Installation and Getting Started…
Good Luck! :)

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