I can't find any exact information, if it is possible to integrate OeBS 18.104.22.168 without Fusion middleware with OEBIEE 22.214.171.124.0 and Oracle Business Intelligence Applications, v. 126.96.36.199. (on IBM AIX).
Please, let me know if it is?
EBS 11.5.10 IS CERTIFIED with 188.8.131.52 which comes with OBIEE 11g (184.108.40.206). Also, AIX should be a supporeted OS platform for some of the key components (Informatica, DAC, OBIEE). You will need Windows for the client tools and also as part of the install process.