Oracle EM12c Quick Reference

OEM 12c comes with many exciting features compare to OEM 11g. That's why there are many options in navigation pane and cloud control panel of OEM12c and It's very difficult to remember each of them.

Managing Exadata with OEM 12c

Many times it happens like we configure something and after sometime if we have to do the same activity then it's very difficult to remember the options from where we have configured earlier and the same effort we have to give even though we know how to do.

Here we have just given list of options available with navigation pane in OEM12c which will act as Quick Reference for EM12c. Hope this will help you.

Click on image to enlarge....

On OEM12c home page we get below navigation pane on top of the screen.

Navigation menu located at top of the left side screen.

It used for navigating the console. There are four menus in navigation pane as below.

Enterprise Menu

It is available to get the view of overall system.Options in Enterprise will give you wide options for monitoring and make it standardize.

Target Menu

It gives access to the configured targets.

Integrate Oracle Support with OEM12c

Procedure to integrate Oracle Support with OEM12c

1. First set the proxy if any, otherwise you can keep as it is like no proxy

Go to


Setup -> Proxy Settings -> My Oracle Support


Click to enlarge

Provide proxy settings:

Test the proxy setting:

Apply Proxy:

2. Apply your oracle credentials which you want to integrarte with EM

DB pre-requisites to configure OEM12c

Database Pre-requisites to install the OEM 12c


### Deconfigure the dbconsole with below command ###


$emca -deconfig dbcontrol db -repos drop -HOST host01.example.com -PORT 1521 -SID emrep -SYS_PWD oraclepwd -SYSMAN_PWD oraclepwd -DBSNMP_PWD oraclepwd Y


### Set the parameter as per below on the OEM dataabse ###


sqlplus /nolog
 connect / as sysdba
 alter system set session_cached_cursors=200 scope=spfile;
 alter system set log_buffer=10485760 scope=spfile;
 alter system set processes=500 scope=spfile;
 alter database datafile '/u01/app/oracle/database/oradata/emrep/undotbs01.dbf' resize 250M;
 shutdown immediate
 startup
 exit