We are in the process of upgrading our BW Java 7.01 to 731/EHP1/SPS9, using SUM 1/SP8. This is a Split landscape, so the ABAP and the Java are running separately. We have been reading various documents and talking with other folks and some says that we should upgrade the Java with the additional application server in place and the upgrade will take care of the application server as well.
Other say that we should un-install the Dialog instances before we enter the Downtime phase and then Re-install the application server after the upgrade.
Yet to find a clear document from SAP on this. Any idea/suggestion?
Our CI is on Solaris Sparc and the DIs are on X86.