I experienced some issues with the document server and GTAC recommended a specific version. Sorry, I don't recall what version they recommended but that issue was a while ago so I would try looking it up in the Siemens knowledge base or call GTAC of you cannot locate it. However, when I was experiencing my doc server issues, I was running the latest java version at the time and it ran fine except and I only had issues when I switched computers for the server.
11.0.1