For Overview and concept about it Read Oracle Documentation Here
The Setup to enable emcli so simple and already provided with Enterprise manager 12c,
From Setup –> Command Line Interface.
After Access Command Line Interface you should be able to install emcli kit by press the below :
Jar File will be installed,Upload it to the server.
Create New Folder On the Server Using :
mkdir /u01/emcli
Set The Variable:-
export JAVA_HOME=/u01/app/fmw/jdk
export PATH=$JAVA_HOME/bin:$PATH
Run the Below Command
java -jar emcliadvancedkit.jar client -install_dir=/u01/emcli
cd /u01/emcli
emcli setup -url=https://EM12c:7802/em -username=sysman -trustall -autologin
Thank you
Osama Mustafa








