ORA-01439 When trying to change CHAR to VARCHAR2 July 22, 2019August 13, 2020 Kaley Crum I recently had a coworker ask me about a strange situation: They were trying to modify a column on a table to go from a CHAR(4 BYTE) to a VARCHAR2(5 BYTE). Oracle, however, didn’t seem to want to cooperate. Oracle… Read More