Help for transfering data from one user' all tables to another

Question

Hello guys,
I have trim the extra sizes of columns in almost all tables of my database. Before doing this, I saved the data of tables by creating another user "User1" with the same objects and importing dmp file in it. After this I cleared my original objects and reduced the extra sizes of columns alomost in all tables.
Now I want to transfer data from backup user "User1" into my original user's "User" tables.
Can any one guid me with the way of doing so, so that I could do it just through 3 or 4 lines of code instead of individualy table wise transfering the data...??
regards
Kashif

Answer 1

SQL> select 'insert into '||table_name||' as select * from user1.'||table_name ||' ;' from user_tables where table_name in ('EMP', 'DEPT') ;
'INSERTINTO'||TABLE_NAME||'ASSELECT*FROMUSER1.'||TABLE_NAME||';'
insert into DEPT as select * from user1.DEPT ;
insert into EMP as select * from user1.EMP ;
2 rows selected.
SQL>You could spool the output of the query above to a .SQL script file and then just run it within the same script using @@script_name.SQL.