Oracle doesn't use node locked licensing, which is convenient for operations. However, it is also convenient for "accidentally/on-purpose having more Oracle run

Oracle doesn't use node locked licensing, which is convenient for operations. However, it is also convenient for "accidentally/on-purpose having more Oracle running than you paid for". So Oracle uses "lawyer locked" licenses instead: you follow the license or else you're going to be spending some uncomfortable time with Oracle's flesh-eating lawyers. See also the law firm in Buffy the vampire slayer.