WARNING: I could not determine Oracle client version so I'll just default to version 8.0.0.0. Some features of DBD::Oracle may not work. Oracle version based logic in Makefile.PL may produce erroneous results. You can use "perl Makefile.PL -V X.Y.Z" to specify a your client version. Oracle version 8.0.0.0 (8.0) DBD::Oracle no longer supports Oracle client versions before 9.2 Try a version before 1.25 for 9 and 1.18 for 8! at Makefile.PL line 271.