I tried to mine the redo logs. But the following output shows numerical identifiers for table and column names. I extracted the dictionary using dbms_logmnr_d.build procedure.

here is the output:
SQL> create table log_tab as select * from v$logmnr_contents;

Table created.

SQL> select sql_redo from log_tab where operation='INSERT';

SQL_REDO
-----------------------------------------------------------------------------------------
insert into "SYS"."OBJ$"("OBJ#","DATAOBJ#","OWNER#","NAME","NAMESPACE","SUBNAME","TYPE#",
insert into "SYS"."ING"("A") values ('1');
insert into "SYS"."ING"("A") values ('2');
insert into "SYS"."ING"("A") values ('2');