So, as part of my upgrade I must move all my client machines (approx 400) from a mixture of 9i and 10i to all of them being on 11g. Anyone have a best practice or best method of doing a mass upgrade? Not sure my bandwidth can support 300 users logging in and getting a push, especially since they are going to immediately want to fire up our app and use the oracle client? I'm reviewing the silent response file documentation. Can you even upgrade a client? Or do you have to uninstall and reinstall? Thanks.Bob -- //www.freelists.org/webpage/oracle-l