cpan> install DBD::Oracle
prerequisite module[B] not known
Running install for module 'DBD::Oracle'
Running make for P/PY/PYTHIAN/DBD-Oracle-1.66.tar.gz
  Has already been unwrapped into directory C:\strawberry\cpan\build\DBD-Oracle-1.66-fdWKfR
  'C:\strawberry\perl\bin\perl.exe Makefile.PL' returned status 512, won't make
Running make test
  Make had some problems, won't test
Running make install
  Make had some problems, won't install
prerequisite module[B] not known