Exporting and Importing An Oracle database from one schema/user to Another schema/user easily

Couple of days ago at work I was asked to create a new environment(schema, user) for specific application testing conditions. While that was no big deal, I was also asked to import all the data from existing production environment into a new environment – and I was in a bit of bother here – generally the whole importing/exporting is done by DBA’s not developers. While I knew the usage of