How do I query from a table created in Table Space in Oracle?

You are likely not the owner of the table or you have not been granted select on the table.

Try adding the owner/schema to the table:

select * from owner.tablename;

If you still get that error, as the owner of the table:
grant select on tableName to otherUser;

Not able to get your question "query from a table created in Table Space in Oracle"

regarding error ORA-00942: table or view does not exist

Can you check if the table exists ?

SELECT * FROM ALL_TABLES
WHERE TABLE_NAME = <'yourtablenameinCAPS>'>

If yes, Are you trying to access this table from another schema or dblink?

Make sure you have required previliges

I am trying to access this table from another schema

I do have permissions

Ok, then try what slightwv mentioned

You can simplify not adding the owner name by creating a synonym:

create synonym table_name for owner.tablename;

then you can: select * from table_name;

Additionally to creating synonym you have to grant SELECT privilige from the acount of the owner of the table.

connect scott/tiger@orcl
grant select on emp to big_brother;

connect big_broder/spy@oracle

SELECT * FROM scott.emp;