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数据库非归档模式下丢失所有redo log 的恢复记录

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SYS@huiches>startup                                                                                         
ORACLE 例程已经启动。                                                                                       
Total System Global Area  159383552 bytes                                                                   
Fixed Size                  1295608 bytes                                                                   
Variable Size              96471816 bytes                                                                   
Database Buffers           54525952 bytes                                                                   
Redo Buffers                7090176 bytes                                                                   
数据库装载完毕。                                                                                            
ORA-00313: 无法打开日志组 4 (用于线程 1) 的成员                                                             
ORA-00312: 联机日志 4 线程 1: 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\HUICHES\REDO04.LOG'                         
                                                                                                            
                                                                                                            
SYS@huiches>select * from v$log;                                                                            
    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARCHIV STATUS       FIRST_CHANGE# FIRST_TIME         
---------- ---------- ---------- ---------- ---------- ------ ------------ ------------- --------------     
         4          1          4   10485760          1 NO     INACTIVE     166685618 07-4月 -10             
         6          1          6   10485760          1 NO     CURRENT      166688926 07-4月 -10             
         5          1          5   10485760          1 NO     INACTIVE     166686751 07-4月 -10             
                                                                                                            
已用时间:  00: 00: 00.06                                                                                    
SYS@huiches>select * from v$logfile;                                                                        
    GROUP# STATUS   TYPE           MEMBER                                                     IS_REC        
---------- ------- -------------- --------------------------------- ------                                  
         6         ONLINE         D:\ORACLE\PRODUCT\10.2.0\ORADATA\HUICHES\REDO06.LOG          NO           
         5         ONLINE         D:\ORACLE\PRODUCT\10.2.0\ORADATA\HUICHES\REDO05.LOG          NO           
         4         ONLINE         D:\ORACLE\PRODUCT\10.2.0\ORADATA\HUICHES\REDO04.LOG          NO           
                                                                                                            
已用时间:  00: 00: 00.01                                                                                    
SYS@huiches>alter system clear logfile group 4;                                                             
alter system clear logfile group 4                                                                          
             *                                                                                              
第 1 行出现错误:                                                                                            
ORA-02065: 非法的 ALTER SYSTEM 选项                                                                         
                                                                                                            
                                                                                                            
已用时间:  00: 00: 00.06                                                                                    
SYS@huiches>alter database clear logfile group 4;                                                           
                                                                                                            
数据库已更改。                                                                                              
                                                                                                            
已用时间:  00: 00: 00.57                                                                                    
SYS@huiches>alter database open;                                                                            
alter database open                                                                                         
*                                                                                                           
第 1 行出现错误:                                                                                            
ORA-00313: 无法打开日志组 5 (用于线程 1) 的成员                                                             
ORA-00312: 联机日志 5 线程 1: 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\HUICHES\REDO05.LOG'                         
                                                                                                            
                                                                                                            
已用时间:  00: 00: 00.32                                                                                    
SYS@huiches>alter database clear logfile group 5;                                                           
                                                                                                            
数据库已更改。                                                                                              
                                                                                                            
已用时间:  00: 00: 00.54                                                                                    
SYS@huiches>alter database open;                                                                            
alter database open                                                                                         
*                                                                                                           
第 1 行出现错误:                                                                                            
ORA-00313: 无法打开日志组 6 (用于线程 1) 的成员                                                             
ORA-00312: 联机日志 6 线程 1: 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\HUICHES\REDO06.LOG'                         
                                                                                                            
                                                                                                            
已用时间:  00: 00: 00.36                                                                                    
SYS@huiches>alter database clear logfile group 6;                                                           
alter database clear logfile group 6                                                                        
*                                                                                                           
第 1 行出现错误:                                                                                            
ORA-00313: 无法打开日志组 6 (用于线程 1) 的成员                                                             
ORA-00312: 联机日志 6 线程 1: 'D:\ORACLE\PRODUCT\10.2.0\ORADATA\HUICHES\REDO06.LOG'                         
ORA-27041: 无法打开文件                                                                                     
OSD-04002: ???????                                                                                       
O/S-Error: (OS 2) ????????????????                                                                    
                                                                                                            
                                                                                                            
已用时间:  00: 00: 00.07                                                                                    
SYS@huiches>alter system set "_allow_resetlogs_corruption"=true scope=spfile;                               
                                                                                                            
系统已更改。                                                                                                
                                                                                                            
已用时间:  00: 00: 00.06                                                                                    
SYS@huiches>shutdown immediate;                                                                             
ORA-01109: 数据库未打开                                                                                     
                                                                                                            
                                                                                                            
已经卸载数据库。                                                                                            
ORACLE 例程已经关闭。                                                                                       
SYS@huiches>startup mount;                                                                                  
ORACLE 例程已经启动。                                                                                       
Total System Global Area  159383552 bytes                                                                   
Fixed Size                  1295608 bytes                                                                   
Variable Size              96471816 bytes                                                                   
Database Buffers           54525952 bytes                                                                   
Redo Buffers                7090176 bytes                                                                   
数据库装载完毕。                                                                                            
SYS@huiches>recover database until cancel;                                                                  
完成介质恢复。                                                                                              
SYS@huiches>alter database open resetlogs;                                                                  
                                                                                                            
数据库已更改。                                                                                              
                                                                                                            
已用时间:  00: 00: 24.54                                                                                    
SYS@huiches>select count(*) from tt;                                                                        
  COUNT(*)                                                                                                  
----------                                                                                                  
     50720                                                                                                  
                                                                                                            
已用时间:  00: 00: 00.23                                                                                    
SYS@huiches>select * from v$log;                                                                            
    GROUP#    THREAD#  SEQUENCE#      BYTES    MEMBERS ARCHIV STATUS    FIRST_CHANGE# FIRST_TIME            
---------- ---------- ---------- ---------- ---------- ------ ----------------------- --------------        
         4          1          1   10485760          1 NO     CURRENT       166689035 07-4月 -10            
         5          1          0   10485760          1 YES    UNUSED                0                       
         6          1          0   10485760          1 YES    UNUSED                0                       
                                                                                                            
已用时间:  00: 00: 00.07                                                                                    
SYS@huiches>select * from v$logfile;                                                                        
    GROUP# STATUS   TYPE           MEMBER                                                       IS_REC      
---------- -------- -------------- ------------------------------------------------------------ ------      
         6          ONLINE         D:\ORACLE\PRODUCT\10.2.0\ORADATA\HUICHES\REDO06.LOG          NO          
         5          ONLINE         D:\ORACLE\PRODUCT\10.2.0\ORADATA\HUICHES\REDO05.LOG          NO          
         4          ONLINE         D:\ORACLE\PRODUCT\10.2.0\ORADATA\HUICHES\REDO04.LOG          NO          
                                                                                                            
已用时间:  00: 00: 00.03                                                                                    
SYS@huiches>alter system switch logfile;                                                                    
                                                                                                            
系统已更改。                                                                                                
                                                                                                            
已用时间:  00: 00: 00.09                                                                                    
SYS@huiches>alter system switch logfile;                                                                    
                                                                                                            
系统已更改。                                                                                                
                                                                                                            
已用时间:  00: 00: 00.07                                                                                    
SYS@huiches>show parameter _allow_resetlogs_corruption                                                      
NAME                                 TYPE                                                             VALUE 
------------------------------------ ---------------------------------------------------------------- ------
_allow_resetlogs_corruption          boolean                                                          TRUE  
                                                                                                            
SYS@huiches>alter system reset "_allow_resetlogs_corruption" scope=spfile sid='*';                          
                                                                                                            
系统已更改。                                                                                                
                                                                                                            
已用时间:  00: 00: 00.07                                                                                    
SYS@huiches>startup force;                                                                                  
ORACLE 例程已经启动。                                                                                       
Total System Global Area  159383552 bytes                                                                   
Fixed Size                  1295608 bytes                                                                   
Variable Size              96471816 bytes                                                                   
Database Buffers           54525952 bytes                                                                   
Redo Buffers                7090176 bytes                                                                   
数据库装载完毕。                                                                                            
数据库已经打开。                                                                                            

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