which do you use to connect to database?
maybe you have no permissions to that objetc...
execute the select including "owner":
select * from owner.table_name;
I have installed oracle 10g express on windows 8.
Said that XE 10g is not certified for Windows 8 (Oracle&reg; Database Express Edition), please post the exact commands you executed and error(s) you got.
Did you insert data in that table ? and did you select from the same session, or another one ? if another one, did you commit after inserting ?