Randomly, we get network disconnections when using DBVisualizer or Oracle SQL Developer to connect to a remote database that is accessed through a VPN. The operating system is Windows XP SP3. We are using the Oracle Thin driver (pracle.jdbc.driver.OracleDriver).
Commonly, what will happen is that I leave the connection open during lunch time in DBVisualizer and when I return, the network connection is lost :no more internet connection and my shared drives are down. This only happens when DBVisualizer (or Oracle SQL Developer) is left open. To restore the network connections I just do an ipconfig /release and ipconfig /renew and everything is back to normal.
What can be the cause and do I fix this problem permenantly ?