How to start JSPM on linux

Hi

I want to upgrade Netweave 2004s sp9 to sp11, it is on linux plateform, I loged the server user <SID>adm, when i run the go script, it hanged at " Waiting for SDTServer to connect to hostname xxxxxxxx socket 6240" , anyone met the problems and how to resolve it , thanks a lot

BTW, I user the VNC to connect to the Linux