I have done many upgrades, but they were all for CRM systems (without Java). And there was only 1 system to be upgraded. The accompanying BW system just had to undergo patching.
But now, I am faced with a situation where I am asked to plan for upgrade of systems which are part of a landscape. In the landscape, there are R/3 systems, XI systems, Portals, etc. Now, the doubt that I have is, it was simple to upgrade just 1 system, but in this landscape, how do I plan my upgrade? Do I need to upgrade the XI, Portal systems also? Do these systems need to be upgraded at the same time as any 1 R3 system?
Basically what I am asking is this: When faced with a complex landscape containing numerous solutions like XI, EP, etc, how do we go about planning/doing the upgrade?
Please help me with this. This is a generic question and not really version specific.
Thanks and Regards,