Welcome. That's the perl which ships with Oracle. My advice would be to leave that alone, either use the system perl to install modules or install your own perl elsewhere on the system. The reason being ISTR Oracle updates being rather stupid, you may have modules blown away during patches/upgrades. Oracles perl has it's own cpan which you could run to install modules to this perl, if you insist on going that way. Update: Also your post was not formatted correctly, making it more difficult to read. Please read PerlMonks for the Absolute Beginner & How do I post a question effectively?.