SAP JCo Scenario: Java/ABAP Communication in the Application Server

In the SAP NetWeaver Application Server (SAP_BASIS), you can work both in a Java environment and in an ABAP environment. Communication between these components is established by the SAP JCo. Figure 1 shows an overview of the architecture of the SAP Application Server with the SAP Java Connector as the interface between the Java and the ABAP environment:

This graphic is explained in the accompanying text.

Figure 1: Java/ABAP Coupling in the SAP Application Server using SAP JCo

Data transfer between SAP JCo and the ABAP environment is performed by means of RFC (with gateway communication by means of CPI-C):

This graphic is explained in the accompanying text.

Figure 2: Communication between ABAP and Java using CPI-C (Application Server)

More Information

SAP JCo and the VM Container
Managing Work Processes in the VM Container
In-Process and Out-of-Process Communication
Logging and Tracing for Using SAP JCo with VMC
Profile Parameter for Using SAP JCo with VMC

You can find an overview of the architecture of AS Java in:

AS Java Integration