If you are planning to make DBI in order to install DBD::Oracle, stop now, before you get frustrated, because the perl you are using does is not built to support DBD::Oracle. I'm sure. It's a 5.6.1 build that - unless you were an expert when you built it yourself - does not have the needed libs in the right place. And /if/ you were an expert, you would have solved this question yourself anyway.