Difference between utlchain.sql and utlchn1.sql

A very small thought The difference between utlchain.sql and utlchn1.sql is the column head_rowid data type: :::::::::::::: utlchain.sql :::::::::::::: create table CHAINED_ROWS ( owner_name varchar2(30), table_name varchar2(30), cluster_name varchar2(30), partition_name varchar2(30), subpartition_name varchar2(30), head_rowid rowid, analyze_timestamp date ); and :::::::::::::: utlchn1.sql :::::::::::::: create table CHAINED_ROWS ( owner_name varchar2(30), table_name varchar2(30), cluster_name varchar2(30), partition_name varchar2(30), subpartition_name varchar2(30), head_rowid urowid, analyze_timestamp date …