Oracle SQL creating user and granting permissions - sql

Question

I'm new to SQL and programming so I apologize if this isn't clearly worded.
I have the following code to create a user and role. I want user1 to be able to select and view table1.
When I run this code user1 isn't able to select table1 and I get the error that the table does not exist.
When prompted with the Database Entry screen I input user and password.
When prompted with the statement "Enter TNS_ADMIN entry or blank for Current Worksheet Database:" I don't input anything.
USER1 is able to connect, but not view the table. Under "other users" in the connection I see USER1 but none of the tables I've established are listed.
Thanks!
CREATE USER user1
IDENTIFIED BY user1
DEFAULT TABLESPACE users
TEMPORARY TABLESPACE temp
ACCOUNT UNLOCK;
CREATE ROLE ReadOnly;
GRANT SELECT ON table1 to ReadOnly;
--GRANT SELECT ON table2 to ReadOnly;
--GRANT SELECT ON table3 to ReadOnly;
GRANT CONNECT to user1;
GRANT ReadOnly to user1;
grant create session to user1;
connect user1
show user
select * from table1

Answer 1

Assuming that table1 is not owned by user1, you have three options
You can use the full name of the table in your query
SELECT * FROM <<schema name>>.table1
You can create a synonym for table1. A private synonym in the user1 schema would generally be preferred but a public synonym would also work. As user1
CREATE SYNONYM table1 FOR <<schema name>>.table1
SELECT * FROM table1;
Or you can change the default schema (for name resolution purposes, this has no impact on privileges)
ALTER SESSION SET current_schema=<<schema that owns table1>>
SELECT * FROM table1;