So should I study documentation related to 220.127.116.11 or 18.104.22.168?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. 22.214.171.124 -> 126.96.36.199 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).