Oracle Database Discussions

Hi Guys,

I am facing space outage on my drive where all my table spaces are located.
Now i have three issues
1.The temp tablespace has alot of empty space i want to move it to another location,i know the procedure but i want to make sure whether i can do it while i am still on line
2.My three tablespaces sysaux,system and users are running out of space.
i want to resize them by adding some datafiles,while they are still online.
3.Is there any limitations on which tablespaces you can not move.

I have six tablespaces system,sysaux,temp,users,undotbds and example.

Undotbs,temp and system are on manual segment management
the rest are auto.

i am running oracle 10 on windows

please help
thanks