possibilties of WEBAS JAVA in an existing ERP with WEBAS ABAP
Just wanted to have a little discussion to get rid of some confusions. If we have ERP running on WEBAS ABAP with core modules implemented (FICO,MM,PM,HR). Now If a requirement of WEBAS JAVA arises. Because application development in java is required. One method is to install JAVA addin in the existing system which is based only on WEBAS ABAP. Now for another option is there a possibility that we can install WEBAS JAVA on an entirely new host without disturbing our existing WEBAS ABAP system ?
Feedback will be appreciated .
Matt Fraser replied
Both are possible, and there are tradeoffs either way. If you install the J2EE Engine as an add-on to your existing ABAP stack, then in some ways system administration is simplified. However, tuning for performance becomes more difficult, more intricate, and of course both stacks will be competing for the same server resources. If you install the Java stack on a separate instance (separate server), you will of course have to configure the JCo connections and so forth from it back to the ABAP backend, as well as RFC "http" connections in SM59 from ABAP to the Java instance, but once that's done the system administration overhead isn't really all that much more than if they're combined, and it's significantly easier to tune for performance on both stacks.
The general recommendation, all other things being equal, would be install them on separate instances, but both your options are supported.