How to install oracle database on centos6.5 system

CentOS 6.5 is a very popular Linux operating system, and Oracle Database is a powerful database software well-known in the industry. In this article, we will discuss how to install Oracle database on CentOS 6.5 operating system.

Step 1: Preparation

Before starting to install Oracle, you need to make the following preparations:

Install the CentOS 6.5 operating system and configure the network connection.

Download and install the Oracle Database installation file through the official website.

Install other necessary software packages, such as binutils, compat-libstdc-33, elfutils-libelf, elfutils-libelf-devel, gcc, gcc-c, glibc, glibc-common, glibc-devel, libaio, libaio-devel, libgcc, libstdc, libstdc-devel, make, sysstat.

Step 2: Install the necessary software packages

Before you start installing the Oracle database, you need to install some necessary software packages. These packages can be installed on CentOS 6.5 with the following command:

yum install binutils compat-libstdc++-33 elfutils-libelf elfutils-libelf-devel gcc gcc-c++ glibc glibc-common glibc-devel libaio libaio-devel libgcc libstdc++ libstdc++-devel make sysstat

Step 3: Create Oracle User and Group

Before installing the Oracle database, you need to create a new user and group to run Oracle Services. You can use the following command to create a new user and group:

groupadd oinstall
groupadd dba
useradd -g oinstall -G dba -d /home/oracle oracle

After creating the user and group, you need to set the password of the Oracle user:

passwd oracle

Step 4: Configure kernel parameters

By default, the CentOS 6.5 operating system may not set the correct kernel parameters for the Oracle database. Therefore, you need to configure the following kernel parameters to ensure that the Oracle database can run normally:

kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 6815744
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

You can use the following command to edit the /etc/sysctl.conf file and add the above parameters to the end of the file:

vi /etc/sysctl.conf

Finally, run the following command to activate the kernel parameters:

sysctl -p

Step 5: Configure the Oracle user environment variables

Now you need to configure the environment variables for the Oracle user. The .bash_profile file for an Oracle user can be edited using the following command:

vi /home/oracle/.bash_profile

Add the following variables at the end of the file:

export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/dbhome_1
export ORACLE_SID=orcl
export PATH=$PATH:$HOME/bin:$ORACLE_HOME/bin

Start a new terminal session or run the following command for immediate effect:

source /home/oracle/.bash_profile

Step 6: Install Oracle Database

Now that you have completed all the necessary preparations, you can start installing the Oracle database. Follow the steps below:

1. Extract the installer into the /tmp directory using the following command:

unzip linux.x64_11gR2_database_1of2.zip -d /tmp
unzip linux.x64_11gR2_database_2of2.zip -d /tmp

2. Run the following command to start the Oracle installer :

/tmp/database/runInstaller

3. On the first screen, select the "Install Database Software" option and click "Next."
4. Then, in the Select Installation Options screen, select the Create and configure a new database option and click Next.
5. Next, on the Select System Class screen, select the Server Class option and click Next.
6. On the Select Installation Type screen, select the Advanced Installation option and click Next.
7. Then, on the Select Database Management Options screen, select the Typical Installation option and click Next.
8. Next, on the Select Installation Location screen, select the database installation location and click Next.
9. On the Specify Administration Options screen, select the Create database using batch process option and click Next.
10. Then, on the Specify Database Identity screen, enter the SID and database password you want to use, and click Next.
11. On the Specify Configuration Options screen, accept the default options and click Next.
12. Next, on the "Installation Execution" screen, review your selected options and click the "Install" button to start the installation.
13. When the installer is complete, on the Result Summary screen, after confirming that all components were successfully installed, click the Close button to exit the installer.

Step 7: Start Oracle Database

Now, you have successfully installed Oracle Database. You can use the following command to start the Oracle database:

/usr/local/oracle/product/11.2.0/dbhome_1/bin/sqlplus /nolog
SQL> conn / as sysdba
SQL> startup

At this point, you have successfully installed and started the Oracle database on CentOS 6.5. Now you can start creating and managing your own data in Oracle Database.

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