how to set up a databse test and development environment with data from production

I need help in setting up test, development & testing oracle database environments for my clients? Currently they only have a production database and PL/SQL code on it. I want to create separate test/dev/pre-prod environments. I need help to set these environments up. what are the environment set-up strategies used by release management? I want to sync the code and data from production into these new environments automatically. Are there any automation tools I can use to make this easier? Note - the client doesn't currently have any SVN system.