还是开启ORACLE的归档模式吧

运行
connect as sysdba                                         
shutdown immediate;                                                          
startup mount ;  
alter database archivelog;     
alter system set log_archive_start = true scope=spfile;                                            
alter database open;                                                        
alter system archive log start;                                              
archive log list;


相关参考。
http://guojuanjun.blog.51cto.com/277646/295454


http://blog.csdn.net/kandari85/article/details/6604510