Oracle requires us to close our connections after each request (or else implement a connection pool), otherwise we will end up running out of available connections. While the mechanism for doing this was added in a previous change, actually using it correctly was omitted somehow. Fix that now. git-svn-id: http://webgoat.googlecode.com/svn/trunk@233 4033779f-a91e-0410-96ef-6bf7bf53c507