According to the docs, you can use the ArrayTupleFetch attribute in the execute_array() method, but I don't see how it's any better than what morgon provided above (unless your db really does some sort of batch/bulk load in this situation).
Comment on Re: Batch Upload/Insert – Row wise with Perl DBI
FYI, some DBDs handle execute_array etc themselves often allowing many rows of data to be sent to the database in one go. DBD::Oracle is one. If you look at the tests in DBD::Oracle and 26exe_array.t you can find examples.