Warning: some settings and command-line options may be lost!
Your vendor has not defined POSIX macro _SC_OPEN_MAX used at c:/Perl/lib/perl5db.pl line 3296
  at c:/Perl/lib/POSIX.pm line 47
      POSIX::AUTOLOAD() called at c:/Perl/lib/perl5db.pl line 3296
      DB::DB called at u:/perlScripts/temp.pl line 3