Oracle Enterprise Manager Cloud Control Architecture and Step by Step Installation Oracle Enterprise Manager ( OEM )


I will explain Oracle Enterprise Manager Cloud Control architecture and installation in this article.



Enterprise Manager Cloud Control is Oracle’s most advanced and popular monitoring software.  You can monitor Oracle Database , Listener, ASM , Exadata, Oracle Database Appliance, Servers, Goldengate, and even non-Oracle systems like SQL Server with Cloud Control.


Oracle Enterprise Manager Cloud Control or Oracle Management Server (OMS) is a central monitoring software. You can install this software on a server as follows and you can monitor all Databases, Servers, Goldengate , Exadata, Oracle Database Appliance etc. by adding Oracle, non Oracle systems, then generate alerts,warning and failures and and send them as Email.


Oracle Enterprise Manager Cloud Control 12c installation requires Oracle Database 11g or 12c , you can read following article to install Oracle database 12c. I wont explain installation of Oracle database 12c in this article.

Oracle Database 12c Step by Step Installation On Linux -3





You can download installation files for Oracle Enterprise Manager Cloud Control 12c linux from support or edelivery as follows.




After download of Cloud control installation files are completed, then unzip these files and execute runInstaller as follows.






Uncheck Security updates and skip them.


Prerequisite checks are done in this step, if there is no problem then click Next button.




Choose Create a new Enterprise Manager system as Advanced type.


Type Middleware home location, Agent base directory, OMS Hostname






You should choose required components and plugins in this step, they will be installed.



Type Weblogic username,password and Nodemanager passwords in this step.



Type database hostname, port, Service/SID and sys password informations



Default port of Enterprise manager cloud control components are like following, If you will change them, you can change it in this step.




Installation summary is like following, click Install button.





You should execute script on OMS Server like following.

# cd /u01/app/oracle/oms12cr2/oms
# ./

Starting to execute .........

Starting to execute /u01/app/oracle/oms12cr2/oms/ ......
Running Oracle 11g script...

The following environment variables are set as:
ORACLE_HOME= /u01/app/oracle/oms12cr2/oms

Enter the full pathname of the local bin directory: [/usr/local/bin]: 
The file "dbhome" already exists in /usr/local/bin. Overwrite it? (y/n) 
[n]: y
Copying dbhome to /usr/local/bin ...
The file "oraenv" already exists in /usr/local/bin. Overwrite it? (y/n) 
[n]: y
Copying oraenv to /usr/local/bin ...
The file "coraenv" already exists in /usr/local/bin. Overwrite it? (y/n) 
[n]: y
Copying coraenv to /usr/local/bin ...

Entries will be added to the /etc/oratab file as needed by
Database Configuration Assistant when a database is created
Finished running generic part of script.
Now product-specific root actions will be performed.
/etc exist

Creating /etc/oragchomelist file...
Finished execution of /u01/app/oracle/oms12cr2/oms/ ...

Starting to execute /u01/app/oracle/agent12cr2/core/ ...
Finished product-specific root actions.
/etc exist
Finished execution of /u01/app/oracle/agent12cr2/core/ ..





Installation is completed like following.


You can connect to Enterprise manager cloud control like following.







Accept license aggrements and start using Enterprise manager Cloud control.



You can read following article if you want to stop and start Enterprise Manager Cloud control



Do you want to learn Oracle Database Performance Tuning detailed, then read the following articles. 

About Mehmet Salih Deveci

I am Founder of SysDBASoft IT and IT Tutorial and Certified Expert about Oracle & SQL Server database, Goldengate, Exadata Machine, Oracle Database Appliance administrator with 10+years experience.I have OCA, OCP, OCE RAC Expert Certificates I have worked 100+ Banking, Insurance, Finance, Telco and etc. clients as a Consultant, Insource or Outsource.I have done 200+ Operations in this clients such as Exadata Installation & PoC & Migration & Upgrade, Oracle & SQL Server Database Upgrade, Oracle RAC Installation, SQL Server AlwaysOn Installation, Database Migration, Disaster Recovery, Backup Restore, Performance Tuning, Periodic Healthchecks.I have done 2000+ Table replication with Goldengate or SQL Server Replication tool for DWH Databases in many clients.If you need Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS Consultancy and Training you can send my email adress [email protected].-                                                                                                                                                                                                                                                 -Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS ve linux Danışmanlık ve Eğitim için  [email protected] a mail atabilirsiniz.

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