Configuring Linux for the Installation of Oracle Database 10gPurpose
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:

OverviewPrerequisitesChecking the Hardware RequirementsConfiguring the Kernel and Creating the oracle User
Viewing Screenshots
Place the cursor on this icon to display all the screenshots in the lesson. You can also place the cursor on each individual icon in the following steps to see only the screenshot that is associated with that step.
Overview
Back to List

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

Prerequisites
Back to Topic List

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
Back to Topic List

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
Back to Topic List

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.

 
2.
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



 
3.
Create the operating system user oracle:

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




4.
Enter the following command to set the password of the oracle user:

/usr/bin/passwd oracle



 
5.
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 022PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/binLD_LIBRARY_PATH=/usr/lib:/usr/X11R6/lib ORACLE_BASE=/u01/app/oracleORACLE_HOME=$ORACLE_BASE/product/10.1.0/db_1ORACLE_SID=orclPATH=$ORACLE_HOME/bin:$PATHexport PATH LD_LIBRARY_PATHexport ORACLE_BASE ORACLE_HOME ORACLE_SID



 
6.
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/oraclechown -R oracle:oinstall /u01/appchmod -R 775 /u01/app



 
7.
Set required kernel parameters:

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