Use or redo log

Question

if the database is in NON ARCHIVE mode then
what is the use of redo log

Answer 1

In that case is there any redo generate when an insert occurs?
SQL*Plus: Release 9.2.0.6.0 - Production on Thu Mar 13 18:57:20 2008
Copyright (c) 1982, 2002, Oracle Corporation.  All rights reserved.
Connected to:
Oracle9i Enterprise Edition Release 9.2.0.6.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.6.0 - Production
[email protected]> set autotrace on
[email protected]> create table redo(redo varchar2(10));
Table created.
[email protected]> insert into redo values ('&redo');
Enter value for redo: Maran
old   1: insert into redo values ('&redo')
new   1: insert into redo values ('Maran')
1 row created.
Execution Plan
   0      INSERT STATEMENT Optimizer=CHOOSE
Statistics
          2  recursive calls
          7  db block gets
          2  consistent gets
          0  physical reads
        588  redo size
        618  bytes sent via SQL*Net to client
        533  bytes received via SQL*Net from client
          3  SQL*Net roundtrips to/from client
          2  sorts (memory)
          0  sorts (disk)
          1  rows processed
[email protected]> Message was edited by:
Maran Viswarayar