Thanks for all the answers for running Zope (Linux) and MS-SQL(WinNT). Now I have a different scenario. In case I use Win2K and MS-SQL-Server 2000, I need to use ZODBCDA. Now my question is that does Zope use connection pooling how do I configure that? If not, then suppose I get 10 database requests, does it put them in queue (opening only one connection) or it executes them parallely opening 10 separate connections?