• Arun Kumar

Oracle Enterprise Manager Cloud Control 13c (13.3) Installation on Oracle Linux 7

This article describes Oracle Enterprise Manager Cloud Control 13c release 3 installation on Oracle Linux 7. The process of installing OEM 13c is same on Oracle Linux 6!

oracle enterprise manager cloud control 13c


Software Requirements


We will be setting up OEL 7 machine using Oracle VirtualBox and configure Oracle Enterprise Manager on top of it


Note: OEM needs minimum 10GB RAM. Make sure you have enough RAM to allocate 10 GB to the virtual machine


Install Oracle Linux 7


For this demonstration purpose, I have used virtualbox VM with 10 GB RAM and 120 GB hard disk. I have setup the virtual machine with exact same steps described in the following article


Install Oracle Linux on VirtualBox (OEL 7.7)



Install Oracle 12cR2


Note that OEM 13cR3 supports 12cR1, 12cR2 and 18c version as the repository database. I am proceeding with 12cR2 database.


We will be using YUM repository to perform all prerequisites for us. Make sure your VM is able to ping google.com before issuing below command

yum -y install oracle-database-server-12cR2-preinstall

Install below packages as they are required by OEM

yum install make -y
yum install binutils -y
yum install gcc -y
yum install libaio -y
yum install glibc-common -y
yum install libstdc++ -y
yum install sysstat -y
yum install glibc -y
yum install glibc-devel.i686 -y
yum install glibc-devel -y
yum install libXtst -y

Set password for Oracle user

passwd oracle

Create directories which will hold Oracle software installation

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

Copy the 12cR2 software files under /u01 and unzip it

su - oracle

cd /u01
unzip linuxx64_12201_database.zip

You can choose to install the Oracle software using GUI method but I will be going with silent mode as it is quick and straight forward.


Create response file under /tmp location with below details

vi /tmp/12cR2_response.rsp

Put below contents and make sure to change the hostname as per your machine

oracle.install.responseFileVersion=/oracle/install/rspfmt_dbinstall_response_schema_v12.2.0
oracle.install.option=INSTALL_DB_SWONLY
ORACLE_HOSTNAME=test.dbagenesis.com
UNIX_GROUP_NAME=oinstall
INVENTORY_LOCATION=/u01/app/oraInventory
SELECTED_LANGUAGES=en
ORACLE_HOME=/u01/app/oracle/product/12.2.0.1
ORACLE_BASE=/u01/app/oracle
oracle.install.db.InstallEdition=EE
oracle.install.db.OSDBA_GROUP=dba
oracle.install.db.OSOPER_GROUP=dba
oracle.install.db.OSBACKUPDBA_GROUP=dba
oracle.install.db.OSDGDBA_GROUP=dba
oracle.install.db.OSKMDBA_GROUP=dba
oracle.install.db.OSRACDBA_GROUP=dba
SECURITY_UPDATES_VIA_MYORACLESUPPORT=false
DECLINE_SECURITY_UPDATES=true
oracle.installer.autoupdates.option=SKIP_UPDATES

Run the installer in silent mode to start the Oracle software installation

cd /u01/database
./runInstaller -ignoreSysPrereqs -showProgress -silent -responseFile /tmp/12cR2_response.rsp

Set .bash_profile and add below parameters

vi .bash_profile

Delete all contents and put below. Make sure to change locations as per your setup

# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
	. ~/.bashrc
fi

# User specific environment and startup programs
export ORACLE_HOME=/u01/app/oracle/product/12.2.0.1
export ORACLE_SID=oemdb
export OMS_HOME=/u01/app/oracle/middleware
export AGENT_HOME=/u01/app/oracle/agent/agent_inst

PATH=$PATH:$HOME/.local/bin:$ORACLE_HOME/bin

export PATH

Export bash profile

. .bash_profile


Create Repository Database


Start the listener

lsnrctl start

We will be creating a repository database that will hold the OEM repository. You can choose to create a NON-CDB database or create PDB to hold repository. I am proceeding with NON-CDB database for our repository database.

dbca -silent -createDatabase \
-templateName General_Purpose.dbc \
-gdbName oemdb \
-sid oemdb \
-createAsContainerDatabase false \
-emConfiguration NONE \
-datafileDestination /u01/db_files \
-storageType FS \
-characterSet AL32UTF8 \
-totalMemory 2048 \
-recoveryAreaDestination /u01/FRA

Connect to the database and issue below commands

  alter system set "_allow_insert_with_update_check"=true scope=both;
  alter system set session_cached_cursors=200 scope=spfile;
  alter system set sga_target=800M scope=both;
  alter system set pga_aggregate_target=450M scope=both;

Its good to bounce the database

SQL> Shut immediate;
SQL> startup;

Our repository database is ready!



Install OEM 13c


Let us start with OEM 13cR3 installation. First we need to create OMS and agent directory

mkdir -p /u01/app/oracle/middleware
mkdir -p /u01/app/oracle/agent

Copy the oem 13c installation files. In my setup, I have copied it under /u01. Start the installer by running the “em13300_linux64.bin” file

cd /u01
./em13300_linux64.bin

Uncheck the security update checkbox and click on Next

my oracle support details - oem13c install security

Skip the software update

oracle enterprise manager cloud control - oem 13c skip software update

All the prerequisites checks must pass. I got a couple of errors and I just ignored it for now as its OEM installation on VM

oracle enterprise manager cloud control - oem 13c prerequisites checks

We will proceed with a simple enterprise manager configuration

oracle enterprise manager - oem 13c simple installation type

Give the locations of Middleware home and agent home

oracle enterprise manager cloud control - installation details

Give admin password that you will use to login to OEM along with repository database details

oracle enterprise manager cloud control - configuration details -click on Yes to allow installer fix errors

Click on Yes to allow installer fix errors

oem 13c installer error

Click on Ok for any warnings. Make sure you fix these in real time installation

oem 13c install warning error

Go with the default software library location. I unchecked the Configure a shared location for BI publisher and checked Enable BI Publisher


Review the installation summary and hit on Install

oracle enterprise manager cloud control - oem 13c install review summary

The installation should start and it will take 3 to 5 hours depending upon your system / VM speed

oracle enterprise manager cloud control - oem 13c install progress

Run the root scripts and then click on OK

oem 13 install execute root scripts

The installation is finished and please note the important information on the final screen which has details about OEM URL

oracle enterprise manager cloud control - oem 13c install success url


Login to OEM


You can login to OEM console via web browser. In my case, I will be navigating to URL https://test.dbagenesis.com:7803/em


Note: You can even use ip address of virtual machine instead of domain name under URL. Like https://192.168.0.171:7803/em

It might throw an ssl certificate error. Click on Advance >> visit website


Login with sysman user and use the password you gave during installation

oem 13c console via google chrome


Stopping OEM Cloud Control


Use below commands to stop OMS, Agent, listener and the database

Stop all
========

$OMS_HOME/bin/emctl stop oms -all

$AGENT_HOME/bin/emctl stop agent

lsnrctl stop

sqlplus / as sysdba

SQL> shut immediate;


Starting OEM Cloud Control


Use below commands to start listener, database, OMS and Agent

lsnrctl start

sqlplus / as sysdba

SQL> startup;

$OMS_HOME/bin/emctl start oms

$AGENT_HOME/bin/emctl start agent


Disable BI Publisher


It’s a good idea to configure BI publisher as part of OEM 13c installation so that its available when you need it in future.


If you are not going to use BI publisher immediately, you can disable it. This will speed up the OEM startup. You can enable BI publisher anytime in future

-- check BI publisher status
$OMS_HOME/bin/emctl status oms
-- disable BI publisher
$OMS_HOME/bin/emctl config oms -disable_bip

-- enable BI publisher
$OMS_HOME/bin/emctl config oms -enable_bip

Done 😉


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