Not getting SCN details in Log Miner

Question

Oracle 11g
Windows 7
Hi DBA's,
I am not getting the SCN details in log miner. Below are steps for the same:-
SQL> show parameter utl_file_dir
NAME                                 TYPE        VALUE                         
utl_file_dir                         string                                    
SQL> select name,issys_modifiable from v$parameter where name ='utl_file_dir';
NAME               ISSYS_MOD                                                                      
utl_file_dir    FALSE                                                          
SQL>  alter system set utl_file_dir='G:\oracle11g' scope=spfile;
System altered.
SQL> shut immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.
Total System Global Area 1071333376 bytes                                                          
Fixed Size                  1334380 bytes                                                          
Variable Size             436208532 bytes                                                          
Database Buffers          629145600 bytes                                                          
Redo Buffers                4644864 bytes                                                          
Database mounted.
Database opened.
SQL> show parameter utl_file_dir
NAME                                 TYPE        VALUE                                             
utl_file_dir                         string      G:\oracle11g\logminer_dir 
SQL> SELECT SUPPLEMENTAL_LOG_DATA_MIN FROM V$DATABASE;
SUPPLEME                                                                                           
NO                                                                                                 
SQL>  ALTER DATABASE ADD SUPPLEMENTAL LOG DATA;
Database altered.
SQL> SELECT SUPPLEMENTAL_LOG_DATA_MIN FROM V$DATABASE;
SUPPLEME                                                                                           
YES                                                                                                
SQL> /* Minimum supplemental logging is now enabled. */
SQL>
SQL> alter system switch logfile;
System altered.
SQL> select g.group# , g.status , m.member
  2       from v$log g, v$logfile m
  3       where g.group# = m.group#
  4       and g.status = 'CURRENT';
    GROUP# STATUS                                                                                 
MEMBER                                                                                             
         1 CURRENT                                                                                 
G:\ORACLE11G\ORADATA\MY11G\REDO01.LOG                                                              
SQL> /* start fresh with a new log file which is the group 1.*/
SQL> create table scott.test_logmnr
  2  (id  number,
  3  name varchar2(10)
  4  );
Table created.
SQL> BEGIN
  2    DBMS_LOGMNR_D.build (
  3      dictionary_filename => 'logminer_dic.ora',
  4      dictionary_location => 'G:\oracle11g');
  5  END;
  6  /
PL/SQL procedure successfully completed.
SQL> /*
SQL>   This has recorded the dictionary information into the file
SQL>   "G:\oracle11g\logminer_dic.ora".
SQL> */
SQL> conn scott/
Connected.
SQL> insert into test_logmnr values (1,'TEST1');
1 row created.
SQL> insert into test_logmnr values (2,'TEST2');
1 row created.
SQL> commit;
Commit complete.
SQL> select * from test_logmnr;
        ID NAME                                                                                    
         1 TEST1                                                                                   
         2 TEST2                                                                                   
SQL> update test_logmnr set name = 'TEST';
2 rows updated.
SQL> select * from test_logmnr;
        ID NAME                                                                                    
         1 TEST                                                                                    
         2 TEST                                                                                    
SQL> commit;
Commit complete.
SQL> delete from test_logmnr;
2 rows deleted.
SQL> commit;
Commit complete.
SQL> select * from test_logmnr;
no rows selected
SQL> conn / as sysdba
Connected.
SQL> select g.group# , g.status , m.member
  2       from v$log g, v$logfile m
  3       where g.group# = m.group#
  4       and g.status = 'CURRENT';
    GROUP#         STATUS                                         MEMBER                                                                                             
         1             CURRENT                           G:\ORACLE11G\ORADATA\MY11G\REDO01.LOG                                                              
SQL> begin
  2        dbms_logmnr.add_logfile
  3        (
  4         logfilename => 'G:\oracle11g\oradata\my11g\REDO01.LOG',
  5         options     => dbms_logmnr.new
  6        );
  7      
  8       /
PL/SQL procedure successfully completed.
SQL> select filename from v$logmnr_logs;
FILENAME                                                                                           
G:\oracle11g\oradata\my11g\REDO01.LOG                                                              
PL/SQL procedure successfully completed.
SQL> BEGIN
  2    -- Start using all logs
  3    DBMS_LOGMNR.start_logmnr (
  4      dictfilename => 'G:\oracle11g\logminer_dic.ora');
  5 
  6   END;
  7  /
PL/SQL procedure successfully completed.
SQL> DROP TABLE myLogAnalysis;
Table dropped.
SQL> create table myLogAnalysis
  2       as
  3       select * from v$logmnr_contents;
Table created.
SQL> begin
  2         DBMS_LOGMNR.END_LOGMNR();
  3       end;
  4       /
PL/SQL procedure successfully completed.
SQL> set lines 1000
SQL> set pages 500
SQL> column scn format a6
SQL> column username format a8
SQL> column seg_name format a11
SQL> column sql_redo format a33
SQL> column sql_undo format a33
SQL> select scn , seg_name , sql_redo , sql_undo
  2  from   myLogAnalysis
  3  where username = 'SCOTT'
  4  AND (seg_owner is null OR seg_owner = 'SCOTT');
SCN SEG_NAME
SQL_REDO                     
SQL_UNDO                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
set transaction read write;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
commit;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
set transaction read write;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
########## TEST_LOGMNR insert into "SCOTT"."TEST_LOGMNR" delete from "SCOTT"."TEST_LOGMNR"                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 
("ID","NAME") values ('1','TEST1'  where "ID" = '1' and "NAME" = 'T                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
EST1' and ROWID = 'AAARjeAAEAAAAD                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
PAAA';                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
########## TEST_LOGMNR insert into "SCOTT"."TEST_LOGMNR" delete from "SCOTT"."TEST_LOGMNR"                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
("ID","NAME") values ('2','TEST2'  where "ID" = '2' and "NAME" = 'T                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
EST2' and ROWID = 'AAARjeAAEAAAAD                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
PAAB';                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
commit;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    
set transaction read write;                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
########## TEST_LOGMNR update "SCOTT"."TEST_LOGMNR" set  update "SCOTT"."TEST_LOGMNR" set                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
"NAME" = 'TEST' where "NAME" = 'T "NAME" = 'TEST1' where "NAME" = '                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
EST1' and ROWID = 'AAARjeAAEAAAAD TEST' and ROWID = 'AAARjeAAEAAAAD                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
PAAA';                       
PAAA';                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
########## TEST_LOGMNR update "SCOTT"."TEST_LOGMNR" set  update "SCOTT"."TEST_LOGMNR" set                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         
"NAME" = 'TEST' where "NAME" = 'T "NAME" = 'TEST2' where "NAME" = '                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        
EST2' and ROWID = 'AAARjeAAEAAAAD TEST' and ROWID = 'AAARjeAAEAAAAD                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        

Answer 1

Kindly type
Desc v$logmnr_contents
Please notice the scn is a *number* column,not varchar2
By using format a6 you are forcing Oracle to display a too big number as a char. Hence the ##.
Sybrand Bakker
Senior Oracle DBA