In my company we are runing java Webshere applications on Windows platform and connecting to DB2 V8 on z/OS mainframe. Until now we have used the type 2 JDBC driver, which are using the DB2 Connect software to obtain connection.
Right now we are planning to move to type 4 JDBC driver, which supports direct connection to DB2 V8 on z/OS using native TCP/IP. That is, we don't need the DB2 Connect overhead anymore.

But we seem to...