I am trying to import tables from user A to another user B on the same database. Both the users have different default tablespaces. But when I try to import into user B , it puts all the tables in user A's tablespace . I want the tables to be imported in user B's tablespace.
Here what I did but I still get problem

1. REVOKE UNLIMITED TABLESPACE FROM UBER_B
2. ALTER USER USERNAME QUOTA 0 ON TABLESPACE_B

I don't know what I did wrong but it's not wokring. The question I have is on item 2:USERNAME, is it USER_A or USER_B. The second question I have is TABLESPACE, is it tablespace in tablespace_A or tablespace_B ??? What if I have index on separate tablespaces with data files. Please give me the detail instructions b/c I tried couple times and it's not working right.

What is solutions and please give me a detial step of how to make this work.

Thanks