static internal extern int OCINumberToInt ( HandleRef err, byte[] number, int rsl_length, OCI.SIGN rsl_flag, out ulong rsl );
static internal extern int OCINumberFromInt ( HandleRef err, ref ulong inum, int inum_length, OCI.SIGN inum_s_flag, byte[] number );
internal static extern int OCINumberFromInt(OciHandle err, ref ulong inum, uint inum_length, [In, MarshalAs(UnmanagedType.U4)] OCI.SIGN inum_s_flag, byte[] number);
internal static extern int OCINumberToInt(OciHandle err, byte[] number, uint rsl_length, [In, MarshalAs(UnmanagedType.U4)] OCI.SIGN rsl_flag, out ulong rsl);
internal static extern int OCINumberFromInt(OciHandle err, ref int inum, uint inum_length, OCI.SIGN inum_s_flag, byte[] number);