Oracle Message PCC-00144 - UNSAFE_NULL=YES must be used with DBMS=V7 and MODE=ORACLE

ERRORUNSAFE_NULL=YES must be used with DBMS=V7 and MODE=ORACLE
CAUSEThe option UNSAFE_NULL=YES has been used with DBMS=V6 or DBMS=NATIVE (the default) or has been used with MODE=ANSI/ANSI14/ANSI13.
ACTIONEither specify DBMS=V7 and MODE=ORACLE (the default) when using UNSAFE_NULL=YES or do not use UNSAFE_NULL=YES.