Oracle Password Cracker written in PL/SQL is available
I won't go into more detail here as I have shown it running previously in this blog in a post titled "A new Oracle Password cracker that runs inside the database" and I have also described it in great detail in the page for the cracker, listed above.
Its raw and beta still and I have some work to do to it, but its stable and works so its worth putting it out now. I will make some changes over the coming days and add some more functionallity and post up the updates when they are ready.
I recommend anyone interested in securing their database to download it as its free, its simple, you can run it in SQL*Plus, so there is no excuse now for any DBA to not hardend and strengthen the passwords in their databases.