java.sql.SQLException: E/A-Exception: Connection reset
After quite some searching around I found a posting that another user had other problems and they went away with the 10g driver. I tried this one with success as well.
The driver is 1352918 bytes in size and named ojdbc14.jar.
This specific problem that I was having was fixed, but other problems arised using the 10g driver in other areas of our JBoss 3.2.3 + CMP + Hibernate 2.1.6 application. We will investigate this.
So make sure to run extensive tests when changing the jdbc driver.