In my earlier post I shoed you the steps to install Oracle database 10gR2 installation in RedHat 5.4 (64-bit).Now in this post I will guide with the steps and the pre-requisites required for the installation of Oracle 11gR2 in Red Hat 6.2 (32-bit)
Pre-requisites before installing database
- GUI Environment
You can do the same using
# yum groupinstall "GNOME Desktop Environment" "X Window System"
In case you want to use KDE desktop you can select the KDE group package instead of GNOME
- Memory Requirements
Minimum 1 GB of RAM
Recommended 2 GB of RAM or more
You can follow the below table which is as per the Oracle standards for installing Oracle Database 11g in a 32 bit Linux machine
RAM
|
Swap
Space
|
Between 1024 MB and 2048 MB
|
1.5
times the size of RAM
|
Between 2049 MB and 16384 MB
|
Equal to the size
of RAM
|
More than 16 GB
|
16
GB
|
You can check the RAM and SWAP space using this command
# free -m total used free shared buffers cached Mem: 4392 4352 39 0 149 3828 -/+ buffers/cache: 374 4018 Swap: 6399 0 6399
In case you want to change the swap size of your machine as per the default standards, Follow this link
- Disk Space Requirements
For the installation of Oracle 11g minimum of 1 GB is required for /tmp directory
You can check the same using
# dh -h /tmp
- Display Requirements
Minimum display of 1024 x 768 or higher is required for the installation of Oracle 11g
- Operating system and Kernel Requirement
Follow this link for making sure that the OS you are using is compatible with the database you are installing
- Package Requirement
binutils-2.20.51.0.2-5.11.el6.i686 compat-libcap1-1.10-1.i686 compat-libstdc++-33-3.2.3-69.el6.i686 gcc-4.4.4-13.el6.i686 gcc-c++-4.4.4-13.el6.i686 glibc-2.12-1.7.el6.i686 glibc-devel-2.12-1.7.el6.i686 pdksh-5.2.14-1.i386 libgcc-4.4.4-13.el6.i686 libstdc++-4.4.4-13.el6.i686 libstdc++-devel-4.4.4-13.el6.i686 libaio-0.3.107-10.el6.i686 libaio-devel-0.3.107-10.el6.i686 make-3.81-19.el6.i686 sysstat-9.0.4-11.el6.i686 unixODBC-2.2.14-11.el6.i686 or later unixODBC-devel-2.2.14-11.el6.i686 or later
- Kernel parameters
Add the following lines at the end of sysctl.conf file
# vi /etc/sysctl.conf fs.aio-max-nr = 1048576 fs.file-max = 6815744 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
Run the following command to refresh the kernel parameters just added
# sysctl -pTo view all the kernel parameters
# sysctl -aSet the proper upper and lower limits in your machine. Add these lines in the given file as shown below
oracle soft nproc 2047 oracle hard nproc 16384 oracle soft nofile 1024 oracle hard nofile 65536 oracle soft stack 10240
- Hostname
Check your hosts file and hostname as it should be proper
# vi /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 10.10.20.42 test test.example.com
Your machine should have a proper hostname. To check use the below command
# hostname test.example.com
- User and Group
You have to create a different user and group who will run the database
# useradd oracle # passwd oracle # groupadd dba # usermod -G dba oracle
So we have added oracle user to dba group using the above command.
- Create home directory
# mkdir -p /u01/app/oracle/product/11.2.0/dbhome_1/ # mkdir /u01/app/oraInventory # chown -R /u01/ # chmod -R oracle:dba /u01/We will use the standard format for creating the oracle database. Create a directory with the name used above.
- Specify the Display protocol
Log in to oracle user
# su - oracle $ export $DISPLAY=localhost:0.0
- Installation
Go to the location where you have downloaded and unzipped the database setup file using oracle user
# su - oracle
$ cd /database11gr2/database/ $ ./runInstaller
NOTE: In case you get DISPLAY related errors at the installation stage follow this page
Browse the location as specified below accordingly as we had created while filling the pre-requisite section
Select the specified directory in your machine
Next the set up will verify all the pre-requisites. In case you are warned for any error or missing package, make sure you correct and move ahead or else you might face issues after or during the installation.
NOTE: It is recommended that all the pre-requisites should be passed successfully.
Click on Finish to start the installation
Next you will get this screen. Click on "Password management"
Next this screen will come up. Create a password for SYS and SYSTEM user and click on Ok
Click on Ok
Now Click on close. You have successfully installed Oracle 11gR2 in your machine
Next this screen will come up. Create a password for SYS and SYSTEM user and click on Ok
Click on Ok
