Consider the following when working with varying session character sets:
When using UTF-16 character set in Teradata PT scripts, the value of n in VARCHAR(n) and CHAR(n) in the SCHEMA definition must be an even and positive number.
LONG VARCHAR and LONG VARGRAPHIC are no longer supported as column types. LONG VARCHAR now corresponds to VARCHAR(64000). See Using LONG VARCHAR with Unicode Character Sets for a discussion on how Teradata PT will handle this column type.