oracle linux installation database

Oracle Linux is an open source operating system based on Red Hat Enterprise Linux, launched by Oracle Corporation. Its installation process is similar to other Linux distributions, but installing Oracle database requires some additional steps and requirements. Below are the detailed steps to install Oracle database.

1. Download and install Oracle Linux

Oracle official website provides a download link for Oracle Linux. Select the version suitable for your hardware architecture on the download page and download it.

Installing Oracle Linux is similar to other Linux distributions. You need to use a USB flash drive or DVD to create a boot disk. Use your favorite tool to create a boot disk. Then start your computer with the prepared startup disk and follow the wizard to install.

2. Install the necessary software packages

Installing the Oracle database requires some software packages, so please make sure you have the following packages installed:

• binutils
• compat-libcap1
• compat-libstdc -33
• glibc
• glibc-devel
• ksh
• libaio
• libaio-devel
• libgcc
• libstdc
• libstdc -devel
• make
• sysstat

If you haven't installed these packages yet, open a terminal and use yum to install them.

sudo yum install binutils compat-libcap1 compat-libstdc -33 glibc glibc-devel ksh libaio libaio-devel libgcc libstdc libstdc -devel make sysstat

3. Create Oracle users and groups

Before installing the Oracle database, you need to create a user and group named oracle.

sudo groupadd oinstall
sudo groupadd dba
sudo useradd -m -G oinstall,dba oracle

4. Configure kernel parameters

For To ensure that the Oracle database can run normally, some kernel parameters need to be configured before installation.

Open the /etc/sysctl.conf file and add the following lines:

fs.file-max = 6815744
kernel.sem = 250 32000 100 128
kernel.shmmni = 4096
kernel.shmall = 1073741824
kernel.shmmax = 4398046511104
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
fs.aio-max-nr = 1048576
vm.swappiness = 10

Save and close the file.

5. Configuring SELinux

SELinux is part of the Linux kernel that provides a mandatory access control mechanism to protect the operating system and applications. Oracle Database does not support SELinux, so it needs to be disabled.

Open the /etc/selinux/config file and set the value of SELINUX to disabled.

SELINUX=disabled

Save and close the file.

6. Configuring environment variables

Before installing the Oracle database, you need to set some environment variables. Open the file ~/.bash_profile and add the following two lines:

export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=$ORACLE_BASE/product/11.2.0/db_1
export ORACLE_SID=orcl
export PATH=$ORACLE_HOME/bin:$PATH
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib

Save and close the file.

7. Download and install Oracle database software

Oracle’s official website provides a download link for Oracle database software. Select the version suitable for your hardware architecture on the download page and download it.

Select the "Install database software only" option on the installation interface, and then follow the wizard to complete the installation.

8. Configuring Oracle Database

After the installation is complete, you need to create an instance in the Oracle database. Open a terminal and run the following command as the oracle user:

dbca

This will open a wizard. Follow the wizard's prompts to create an Oracle database instance. During the creation process, you need to provide the following information:

• Database name
• Port number
• Listening address
• Character set
• The location and name of the initialization parameter file

After the creation is completed, you can use the Oracle database.

Conclusion

Installing the Oracle database may take some time because there are many configuration items that need to be set. But if you follow the above steps and wait patiently, you will be able to install Oracle Database in Oracle Linux.

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