The steps to install a SAP Netweaver 7.3 Central Instance ( CI ) on the same host are given below.
The diagram below is to give better understanding regarding the standard ABAP + JAVA System.
It is recommended to check sap note 611361 and PAM matrix for OS and hardware requirement. Specially if you are installing on UNIX based system , please do check the above resources.
1. Download the Netweaver 7.3 media from SMP . Once you have extracted the media you should be able to have the following folder.
2. Prepare OS and Java Enviorment :
Set the Virtal memory as per the note 1518419.
Install JRE and set the environment variables on the host OS.
3. Install the 11g Oracle DB.
On the database server, place the Oracle RDBMS media in the media drive and change to the directory::\database\SAP\
The media is having the sapserver.cmd file at Drive:\Oracle_RDBMS\51042334\database\SAP
Install the relevant patch as per note 1503709
4. Start the Installation:
Once you browse the installation master media please choose the sapinst as per the desired OS and DB installation.
Here we have selected the media for Windows 2008 R2/Oracle installation.
As you can see we do not have dual system selection expect for PI .
Here are the screenshots to gave you an idea regarding the installation.
Installation of Java Stack
For EP Installation you have to select following Usage Types.
Once the installation if completed for both stacks ( Abap and Java) , you can check the NWA .
The post installation steps for both Abap and Java instances has to be completed as per the installation guide.