tracking DDL,while DB is in noarchivelog mode

You want to tack DDL and your DB is in noarchivelog , attempted as below,[no way but to use catalog in flat file]
SQL> conn / as as sysdba
Connected.
SQL> ALTER SESSION SET NLS_DATE_FORMAT = 'DD-MON-YYYY HH24:MI:SS';
Session altered.

SQL> EXECUTE DBMS_LOGMNR.START_LOGMNR( -
> STARTTIME => '13-apr-2009 12:42:00', -
> ENDTIME => '15-apr-2009 11:55:00', -
> OPTIONS => DBMS_LOGMNR.DICT_FROM_ONLINE_CATALOG + -
> DBMS_LOGMNR.CONTINUOUS_MINE);
BEGIN DBMS_LOGMNR.START_LOGMNR( STARTTIME => '13-apr-2009 12:42:00', ENDTIME => '15-apr-2009 11:55:00', OPTIONS => DBMS_LOGMNR.DICT_FROM_ONLINE_CATALOG + DBMS_LOGMNR.CONTINUOUS_MINE); END;

*
ERROR at line 1:
ORA-01325: archive log mode must be enabled to build into the logstream

And again below you get error when utry use redo logs for building dict
SQL> EXECUTE DBMS_LOGMNR_D.BUILD ( options=>DBMS_LOGMNR_D.STORE_IN_REDO_LOGS);
BEGIN DBMS_LOGMNR_D.BUILD ( options=>DBMS_LOGMNR_D.STORE_IN_REDO_LOGS); END;
*
ERROR at line 1:
ORA-01325: archive log mode must be enabled to build into the logstream

if DB bouce is affordable go ahead as follow:
SQL> alter system set utl_file_dir='c:\ora';
SQL> shutdown immediate
SQL> startup

SQL> EXECUTE DBMS_LOGMNR_D.BUILD('dictionary.ora', 'c:\dict', OPTIONS => DBMS_LOGMNR_D.STORE_IN_FLAT_FILE);
PL/SQL procedure successfully completed.

SQL> EXECUTE DBMS_LOGMNR.START_LOGMNR(OPTIONS => DBMS_LOGMNR.DDL_DICT_TRACKING);
BEGIN DBMS_LOGMNR.START_LOGMNR(OPTIONS => DBMS_LOGMNR.DDL_DICT_TRACKING); END;
*
ERROR at line 1:
ORA-01292: no log file has been specified for the current LogMiner sessionORA-06512: at "SYS.DBMS_LOGMNR", line 53
ORA-06512: at line 1

seems in much hurry!!

SQL> EXECUTE DBMS_LOGMNR.ADD_LOGFILE(LOGFILENAME => 'C:\ORACLE\ORADATA\CORPENH\REDO01.LOG', OPTIONS => DBMS_LOGMNR.NEW);

SQL> EXECUTE DBMS_LOGMNR.ADD_LOGFILE(LOGFILENAME => 'C:\ORACLE\ORADATA\CORPENH\REDO02.LOG', OPTIONS => DBMS_LOGMNR.NEW);

SQL> EXECUTE DBMS_LOGMNR.ADD_LOGFILE(LOGFILENAME => 'C:\ORACLE\ORADATA\CORPENH\REDO03.LOG', OPTIONS => DBMS_LOGMNR.NEW);

[file 3 was current log group file]

SQL> EXECUTE DBMS_LOGMNR.START_LOGMNR(OPTIONS => DBMS_LOGMNR.DDL_DICT_TRACKING);

SQL> select count(*) from v$logmnr_contents;
COUNT(*)
----------
48050

SQL> create table t1 as select * from v$logmnr_contents;
Table created.

SQL> create table t2(c1 number);
Table created.

SQL> truncate table t2;
Table truncated.

SQL> create table t1_log as select * from v$logmnr_contents;
Table created.

query from, another session SELECT t.session_info,t.sql_redo, t.* FROM t1_log t WHERE UPPER(sql_redo) LIKE UPPER('%truncate%') OR operation LIKE 'DDL'
gives: DDL operations above in SQL>prompt are also tracked