When you migrate OBIEE from 10g or 188.8.131.52 or 184.108.40.206 to a newer version it is important to know the supported upgrade paths.
If your objective is version 220.127.116.11.x (for example the latest 18.104.22.168.10) then first you has to go to 22.214.171.124.0. Afterward you can patch the version with opatch to 126.96.36.199.x. This way is described here by Oracle. Bear in mind that all patches are cumulative so you only has to take the latest one.
If your objective is version 188.8.131.52.x then you can directly go to this version. There is no need to take a stopover. This way is described here by Oracle.