When SQL Developer is idle I lose my connection

Question

My problem is this: I am running Oracle 10G on windows 98 on a virtual machine using VMWare on my desktop computer. I can connect to several users (SYS, HR, OE, ... ) with

Answer 1

MinChen Chai has created Keep-Alive Extension exactly for your situation: https://sites.google.com/site/keepaliveext

It will continually send TCP keep-alive packets and prevent server disconnection by inactivity timeout.