OEM12c Installation and Configuration on RedHat Linux 5.10

In this blog I have explain the steps how you can install “Oracle Enterprise Manager 12c” on your Linux box. I already have RedHat Linux 5.10 installed on my VM machine.  To install Enterprise Manager Cloud Control with advanced configuration, follow these steps:

Before we begin the installation there are few Packages Required for Oracle Management Service. To identify the packages already installed on server, run below command

Rpm –qa | grep pkg_name (For Linux only)

If the command does not list the required packages then ask Infra Team to installed required packages on server.

(Check Oracle doc for Required Packages as per OS release and version)

NOTE: You can easily download latest Enterprise Manager Cloud Control software from Oracle Support.

Please follow another important note from Oracle for OEM12c Installation.

NOTE: The Enterprise Manager Cloud Control Installation Wizard installs Java Development Kit (JDK) and Oracle WebLogic Server 11g Release 1 (10.3.6) only if you do not specify the use of existing installations. Oracle strongly recommends using the 12c installation process to install the JDK and Oracle WebLogic Server for use with Enterprise Manager 12c

I have installed and configure Oracle database 11g(, which will be used as OEM Repository. So make sure you have your database already setup before you being installation.

Step 1:  Invoke the Enterprise Manager Cloud Control Installation Wizard

# ./<Software_Location>/runInstaller

Note: When you invoke runInstaller, if the Enterprise Manager Cloud Control Installation Wizard does not appear, then it is possible that you do not have read and write access to /stage, which a subdirectory in the <Software_Location> directory of the Enterprise Manager software.

Step 2:  (Optional) Enter My Oracle Support Details:

(Optional) On the My Oracle Support Details screen, enter your My Oracle Support credentials to enable Oracle Configuration Manager. Here we do not want to enable Oracle Configuration Manager now.


Step 3:  Install Software Updates:

These options are to search for update or to apply the latest software updates, here we select skip option because we can do it offline or enable later after installation. Click Next

NOTE : If Enterprise Manager Cloud Control is the first Oracle product you are installing on the host that is running on UNIX operating system, then the Oracle Inventory screen appears. Otherwise Check Prerequisites screen appears


Step 4:  Check Prerequisites

On the Prerequisite Checks screen, check the status of the prerequisite checks run by the installation wizard, and verify whether your environment meets all the minimum requirements for a successful installation. Click Next


The status of the prerequisite check can be either Warning, Failed, or Succeeded. If some checks result in Warning or Failed status, then investigate and correct the problems before you proceed with the installation.

Step 5:  Installation Types

On the Installation Types screen, select Create a New Enterprise Manager System, then select Advanced. Click Next


Step 6:  Installation Details

On the Installation Details screen, do the following:

  1. Enter the absolute path to the Middleware home where you want to install the OMS and other core components.
  2. Enter the absolute path to the agent base directory, a location outside the Oracle Middleware home where the Management Agent can be installed
  3. Enter the name of Host where you are configuring OMS

Click Next

NOTE : Ensure that this location is empty and has write permission and number of characters in the middleware home path does not exceed 70 characters


Step 6:  Deploy Plugins:

The pre-selected rows are mandatory plug-ins that will be installed by default. Select the optional ones you want to install

Click next


Step 6:  Enter WebLogic Server Configuration Details:

On the WebLogic Server Configuration Details screen, enter the credentials for the WebLogic Server user account and the Node Manager user account, and validate the path to the Oracle Management Service instance base location

Note: Ensure that your password contains at least 8 characters without any spaces, begins with a letter, and includes at least one numeric value.

Click Next


Step 7:  Enter Database Connection Details:

On the Database Connection Details screen, do the following:

  1. Provide details of the existing, certified database where the Management Repository needs to be created.
  2. Select the deployment size from the Deployment Size list to indicate the number of targets you plan to monitor, the number of Management Agents you plan to have, and the number of concurrent user sessions you plan to have. Click Next


Step 8:  Enterprise Manager Configuration Details:

  1. For SYSMAN Password, enter a password for creating the SYSMAN user account.
  2. For Registration Password, enter a password for registering the new Management Agents that join the Enterprise Manager system.
  3. For Tablespace, enter the full path to the location where the data file for management, configuration and JVM Diagnostic Data tablespace can be stored.
  4. Enter the absolute on the OMS host where the Software Library can be configured.


Step 9:  Port Configuration Details:

NOTE: If all the ports on this screen appear as -1, then it indicates that the installer is unable to bind the ports on the host. To resolve this issue, exit the installer, verify the host name and the IP configuration of this host (ensure that the IP address of the host is not being used by another host), restart the installer, and try again.

To verify if a port is free, run the following command:

netstat -an | grep <port no>


Step 10:  Review and Install:

On the Review screen, review the details you provided for the selected installation type.

  1. If you want to change the details, click Back repeatedly until you reach the screen where you want to make the changes.
  2. After you verify the details, if you are satisfied, click Install to begin the installation process.


Step 11:  Track the Progress:

On the Install Progress screen, view the overall progress (in percentage) of the installation and the status of each of the Configuration Assistants. Configuration Assistants are run for configuring the installed components of Enterprise Manager Cloud Control.

Note: If you accidently exit the installer before clicking Retry, then do NOT restart the installer to reach the same screen; instead, invoke the runConfig.sh script from the OMS home to rerun the Configuration Assistant in silent mode.

$<OMS_HOME>/oui/bin/runConfig.sh ORACLE_HOME=<absolute_path_to_OMS_home> MODE=perform ACTION=configure COMPONENT_XML={encap_oms.1_0_0_0_0.xml}

If the runConfig.sh script fails, then clean up your environment and redo the installation.

Step 12: Run Scripts

Once the software binaries are copied and configured, you are prompted to run the allroot.sh script and the oraInstRoot.sh script if this is the first Oracle product installation on the host. Open another window, log in as root, and manually run the scripts.

Step 13:  End the Installation


I hope this will help you to install and setup Oracle enterprise Manager 12c cloud control . If you have any doubts any questions you can reach up to me anytime via email. My email address is sharma.deepak345@gmail.com.

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