What repository, ActiveState? If that is the case, report the problem to their support -- I guess http://community.activestate.com/forums/ppm

although through http://community.activestate.com/search/?keys=oracle I have found Unable to run perl on windows 7 64-bit machine (DBD::Oracle error) | ActiveState Community Site and while the error messages don't exactly match, they're in the same flow so the solution might be the same , which is -- make sure you have both 32bit and 64bit oracle client installed

which according to the published log is LD_RUN_PATH=C:/instantclient_11_2/lib:C:/instantclient_11_2/rdbms/lib

or you need to adjust your %PATH% to include instacli..... or whatever

Good luck