Oracle Database 11g Release 2 (11.2) Installation On Oracle Linux 7 (OL7) (2024)

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Oracle Linux 7 is a production release, but the Oracle Database is only supported on it from Oracle Database 11g (11.2.0.4) onward. This installation should not be used for a real system when using database versions prior to 11.2.0.4.

This article describes the installation of Oracle Database 11g Release 2 (11.2.0.4) 64-bit on Oracle Linux 7 (OL7) 64-bit. The article is based on a server installation with a minimum of 2G swap and secure Linux set to permissive. An example of this type of Linux installation can be seen here.

• Download Software
• Unpack Files
• Hosts File
• Oracle Installation Prerequisites
  
  • Automatic Setup
  • Manual Setup
  • Additional Setup
• Installation
• Post Installation

Download Software

Download the Oracle software using one of the two link below. If you have access to My Oracle Support (MOS), then it is better to download the 11.2.0.4 version, since this is the first release of 11.2 that is supported on Oracle Linux 7.

• Oracle Database 11g Release 2 (11.2.0.4) Software (MOS)
• Oracle Database 11g Release 2 (11.2.0.1) Software (OTN)

Unpack Files

Unzip the files.

unzip linux.x64_11gR2_database_1of2.zipunzip linux.x64_11gR2_database_2of2.zip

You should now have a single directory called "database" containing installation files.

Hosts File

The "/etc/hosts" file must contain a fully qualified name for the server.

<IP-address> <fully-qualified-machine-name> <machine-name>

For example.

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4192.168.0.215 ol7.localdomain ol7

Set the correct hostname in the "/etc/hostname" file.

ol7.localdomain

Oracle Installation Prerequisites

Perform either the Automatic Setup or the Manual Setup to complete the basic prerequisites. The Additional Setup is required for all installations.

Automatic Setup

If you plan to use the "oracle-rdbms-server-11gR2-preinstall" package to perform all your prerequisite setup, follow the instructions at http://public-yum.oracle.com to setup the yum repository for OL, then perform the following command.

# yum install oracle-rdbms-server-11gR2-preinstall

All necessary prerequisites will be performed automatically.

It is probably worth doing a full update as well, but this is not strictly speaking necessary.

# yum update

Manual Setup

If you have not used the "oracle-rdbms-server-11gR2-preinstall" package to perform all prerequisites, you will need to manually perform the following setup tasks.

Add or amend the following lines in the "/etc/sysctl.conf" file.

fs.aio-max-nr = 1048576fs.file-max = 6815744kernel.shmall = 2097152kernel.shmmax = 536870912kernel.shmmni = 4096# semaphores: semmsl, semmns, semopm, semmnikernel.sem = 250 32000 100 128net.ipv4.ip_local_port_range = 9000 65500net.core.rmem_default=262144net.core.rmem_max=4194304net.core.wmem_default=262144net.core.wmem_max=1048586

Run the following command to change the current kernel parameters.

/sbin/sysctl -p

Add the following lines to the "/etc/security/limits.conf" file.

oracle soft nproc 2047oracle hard nproc 16384oracle soft nofile 4096oracle hard nofile 65536oracle soft stack 10240

Add the following line to the "/etc/pam.d/login" file, if it does not already exist.

session required pam_limits.so

The following packages are listed as required, including the 32-bit version of some of the packages. Many of the packages should be installed already.

yum install binutils -yyum install compat-libstdc++-33 -yyum install compat-libstdc++-33.i686 -yyum install gcc -yyum install gcc-c++ -yyum install glibc -yyum install glibc.i686 -yyum install glibc-devel -yyum install glibc-devel.i686 -yyum install ksh -yyum install libgcc -yyum install libgcc.i686 -yyum install libstdc++ -yyum install libstdc++.i686 -yyum install libstdc++-devel -yyum install libstdc++-devel.i686 -yyum install libaio -yyum install libaio.i686 -yyum install libaio-devel -yyum install libaio-devel.i686 -yyum install libXext -yyum install libXext.i686 -yyum install libXtst -yyum install libXtst.i686 -yyum install libX11 -yyum install libX11.i686 -yyum install libXau -yyum install libXau.i686 -yyum install libxcb -yyum install libxcb.i686 -yyum install libXi -yyum install libXi.i686 -yyum install make -yyum install sysstat -yyum install unixODBC -yyum install unixODBC-devel -yyum install zlib-devel -yyum install elfutils-libelf-devel -y

Create the new groups and users.

groupadd -g 54321 oinstallgroupadd -g 54322 dbagroupadd -g 54323 oper#groupadd -g 54324 backupdba#groupadd -g 54325 dgdba#groupadd -g 54326 kmdba#groupadd -g 54327 asmdba#groupadd -g 54328 asmoper#groupadd -g 54329 asmadminuseradd -g oinstall -G dba,oper oracle

We are not going to use the extra groups, but include them if you do plan on using them.

Additional Setup

The following steps must be performed, whether you did the manual or automatic setup.

Set the password for the "oracle" user.

passwd oracle

Set secure Linux to permissive by editing the "/etc/selinux/config" file, making sure the SELINUX flag is set as follows.

SELINUX=permissive

Once the change is complete, restart the server or run the following command.

# setenforce Permissive

If you have the Linux firewall enabled, you will need to disable or configure it, as shown here or here. To disable it, do the following.

# systemctl stop firewalld# systemctl disable firewalld

Create the directories in which the Oracle software will be installed.

mkdir -p /u01/app/oracle/product/11.2.0.4/db_1chown -R oracle:oinstall /u01chmod -R 775 /u01

Unless you are working from the console, or using SSH tunnelling, login as root and issue the following command.

xhost +<machine-name>

Add the following lines at the end of the "/home/oracle/.bash_profile" file.

# Oracle SettingsTMP=/tmp; export TMPTMPDIR=$TMP; export TMPDIRORACLE_HOSTNAME=ol7.localdomain; export ORACLE_HOSTNAMEORACLE_UNQNAME=DB11G; export ORACLE_UNQNAMEORACLE_BASE=/u01/app/oracle; export ORACLE_BASEORACLE_HOME=$ORACLE_BASE/product/11.2.0.4/db_1; export ORACLE_HOMEORACLE_SID=DB11G; export ORACLE_SIDORACLE_TERM=xterm; export ORACLE_TERMPATH=/usr/sbin:$PATH; export PATHPATH=$ORACLE_HOME/bin:$PATH; export PATHLD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib; export LD_LIBRARY_PATHCLASSPATH=$ORACLE_HOME/JRE:$ORACLE_HOME/jlib:$ORACLE_HOME/rdbms/jlib; export CLASSPATH

Installation

Log into the oracle user. If you are using X emulation then set the DISPLAY environmental variable.

DISPLAY=<machine-name>:0.0; export DISPLAY

Start the Oracle Universal Installer (OUI) by issuing the following command in the database directory.

./runInstaller

Proceed with the installation of your choice. You can see type of installation I performed by clicking on the links below to see screen shots of each stage. The "pdksh" package will be listed as missing, which can be ignored because we installed the "ksh" package instead.

If you are doing an installation for an Enterprise Manager repository, remember to do an advanced installation and pick the ALT32UTF8 character set.

1. Configure Security Updates
2. Select Install Option
3. System Class
4. Node Selection
5. Select Install Type
6. Typical Install Configuration
7. Create Inventory
8. Perform Prerequisite Checks
9. Summary
10. Install Product
11. Database Configuration Assistant
12. Database Configuration Assistant 2
13. Execute Configuration Scripts
14. Finish

During the link phase you will encounter an error invoking the "ins_emagent.mk" file. To fix this, edit the "$ORACLE_HOME/sysman/lib/ins_emagent.mk", doing a search and replace for the line shown below.

FROM:$(MK_EMAGENT_NMECTL)TO :$(MK_EMAGENT_NMECTL) -lnnz11

Click the "Retry" button.

Post Installation

Edit the "/etc/oratab" file setting the restart flag for each instance to 'Y'.

DB11G:/u01/app/oracle/product/11.2.0.4/db_1:Y

For more information see:

• Oracle Database Installation Guide11g Release 2 (11.2) for Linux
• Automating Database Startup and Shutdown on Linux

Hope this helps. Regards Tim...

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