Configuring Linux for the Installation of Oracle Database 10g

Purpose

In this lesson, you learn how to configure Linux and prepare for the installation of Oracle Database 10g.

Topics

This lesson covers the following topics:

Overview Prerequisites Checking the Hardware Requirements Configuring the Kernel and Creating the oracle User

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Overview

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The lesson prepares the Linux operating system for the installation of Oracle Database 10g.

Prerequisites

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Before starting this lesson, you should have:

1.

Installed an Oracle Database 10g certified version of Linux on a platform certified for that version of Linux. To see the latest certification information, use Metalink and select Certify & Availability. You can also use OTN.

Checking the Hardware Requirements

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The system on which you install Linux must meet the following requirements:

512 MB of physical random access memory (RAM)

1 GB of swap space (or twice the size of RAM)

Swap space between one and two times the size of RAM (on systems with 2 GB or more of RAM)

400 MB of disk space in the /tmp directory

2.1 GB of disk space for the Oracle software and Sample Schema Database

Configuring the Kernel and Creating the oracle User

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To configure the system, follow these steps (written for Bourne, Korn, and bash shells):

1.

Open a terminal window and log in as the root user.

The following local UNIX groups and user must exist on the system:

Groups: oinstall and dba
User: oracle

Optionally, the oper group can be created.

Group: oper

We now create the three groups oinstall, dba, and oper:

/usr/sbin/groupadd oinstall
/usr/sbin/groupadd dba
/usr/sbin/groupadd oper 

Create the operating system user oracle:

/usr/sbin/useradd -g oinstall -G dba,oper oracle

Enter the following command to set the password of the oracle user:

/usr/bin/passwd oracle

With an editor of your choosing, open /home/oracle/.bash_profile. If you are using another shell, please add the entries to the appropriate file.

umask 022

PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin
LD_LIBRARY_PATH=/usr/lib:/usr/X11R6/lib 
        
ORACLE_BASE=/u01/app/oracle
ORACLE_HOME=$ORACLE_BASE/product/10.1.0/db_1
ORACLE_SID=orcl
PATH=$ORACLE_HOME/bin:$PATH

export PATH LD_LIBRARY_PATH
export ORACLE_BASE ORACLE_HOME ORACLE_SID

Create the directory for the software installation and assign ownership to oracle:oinstall. In the example, you use /u01/app/oracle.

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

Set required kernel parameters:

Parameter                       Value
----------------------------    -----------------
kernel.semmsl                   250
kernel.semmns                   3200
kernel.semopm                   100
kernel.semmni                   128
kernel.shmall                   2097152
kernel.shmmax                   2147483648
kernel.shmmni                   4096
fs.file-max                     65536
net.ipv4.ip_local_port_range    1024 65000

Open the /etc/sysctl.conf file in any text editor and add lines similar to the following:

kernel.sem = 250 32000 100 128
kernel.shmall = 2097152
kernel.shmmax = 2147483648
kernel.shmmni = 4096
fs.file-max = 65536
net.ipv4.ip_local_port_range = 1024 65000

With specified values for these parameters in the /etc/sysctl.conf file, the values persist when you reboot the system.

The kernel changes made previously take effect with each reboot.

Issue this command to set the kernel parameters:

/sbin/sysctl -p

Log in as operating system user oracle. You must install the software from an X Window System workstation, an X terminal, or a PC or other system with X server software installed.

Installing Oracle Database 10g on Linux

Purpose

In this lesson, you learn how to install Oracle Database 10g on Linux.

Topics

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