Peformance degradation with 60

We recently moved our WM Integerattion server from WM 4.0 to 6.0.1 SP2
There has been no change in WebLogic server - That remanins 7.0

Has anyone experienced performance problems because of this?
We invoke Beans on the WebLogic server and also make directr databse connections to the Databse from flow services

Quite the opposite. On a previous project, we saw a huge performance increase when moving from 4.6 to 6.01. Our integrations included both WmDB connections to Oracle 9i and RMI connections to WebLogic 7.x (and later 8.x).