This is more of a Designer question, so I will move the topic there.
In addition to any information you get here, I would also suggest reading the specific database guide (pdf file) that was installed on your machine (C:\Program Files\Business Objects\Online Guides for a default v5 installation). It goes through each of the options in the .prm file, .sbo file (sorry, not familiar with .dbo file). In any case you will find that it would be a bit dangerous to edit / delete them unless you know what you’re doing.
I just have a small question in it can we edit .sbo and .prm files for a universe built on top of Bex query designer for improving the performance
as we edit in the case of a Oracle data base
If we can edit those files what are the xtrimities we can edit
There is no OLAP universe involved if you use the better functionality of Webi 4 directly against SAP BEx queries (via BICS). So that point becomes mute.