InfoWorld’s “Fundamental Oracle flaw revealed” revealed on Jan. 17. Oracle acknowledged undocumented, manual methods to raise Oracle SCN (System Change Number) Oracle has a constantly moving “soft” SCN limit based on the number of seconds that have elapsed since Jan. 1, 1988, times the number 16,384. Oracle: Elevated SCN values can be passed among Oracle databases, so that in heavily linked environments, those values may spread quickly. In the interest of protecting the security of Oracle customers, we will refrain from describing this method.”]
Source: https://www.csoonline.com/article/2130614/the-oracle-flaw–clarifications-and-more-information.html