So should I study documentation related to 188.8.131.52 or 184.108.40.206?It's been a while since I looked at the specific definitions for the release numbers. However, significant changes are only made in the first decimal (i.e. 11.1 -> 11.2). The further to the right the decimal change, the smaller the impact. 220.127.116.11 -> 18.104.22.168 will only have bug fixes, not changes that would impact test questions. Either documentation should be acceptable (assuming Oracle even made a doc change in the first place).