Message Oracle PCC-02449 - Cannot type equivalence a UCS2 type

ERRORCannot type equivalence a UCS2 type
CAUSEA UCS2 type has been type equivalenced in an EXEC SQL TYPE statement or a variable of UCS2 type has been type equivalenced in an EXEC SQL VAR statement.
ACTIONRemove the EXEC SQL TYPE or EXEC SQL VAR statement.