Oracle Error EXP-00042: Missing NLS_CHARACTERSET/NLS_NCHAR_CHARACTERSET in props$

Oracle Error Message

EXP-00042: Missing NLS_CHARACTERSET/NLS_NCHAR_CHARACTERSET in props$

Reason for the Error

A value for NLS_CHARACTERSET/NLS_NCHAR_CHARACTERSET was not entered in the props$ table”

Solution

internal error.