This is a repeat of a previous question from several years ago that did not receive an answer.
Oracle has a string matching package, UTL_MATCH, which contains the subprogram JARO_WINKLER_SIMILARITY.
Jaro Winkler Similarity is a variant of the Jaro Distance, but includes a prefix scale factor to account for common characters at the start of two strings being matched. I cannot find any documentation for the default prefix scale in the UTL_MATCH package, or how to set this manually. Does anyone know of any documentation on this?