varchar2(n BYTE|CHAR) default -> CHAR or BYTE

Question

I am supporting code that has below schema declaration:-

create table sample (
        id number Primary key,
        username varchar2(100),
);

Answer 1

You might check your current value using the following query:

SELECT
  value

FROM
  NLS_DATABASE_PARAMETERS

WHERE
  parameter='NLS_LENGTH_SEMANTICS';