归档模式下redo丢失或损坏(current状态)


归档模式下current logfile丢失或损坏恢复

+++++Session 1

SQL> set linesize 200 pagesize 2000

SQL> col member format a50

SQL> select * from v$log;

GROUP# THREAD# SEQUENCE# BYTES BLOCKSIZE MEMBERS ARC STATUS FIRST_CHANGE# FIRST_TIM NEXT_CHANGE# NEXT_TIME

---------- ---------- ---------- ---------- ---------- ---------- --- -------------- -------------------------------

1 1 4 52428800 512 1 NO CURRENT 1670955 29-DEC-15 2.8147E+14

2 1 2 20971520 512 1 YES INACTIVE 1670943 29-DEC-15 1670949 29-DEC-15

3 1 3 52428800 512 1 YES INACTIVE 1670949 29-DEC-15 1670955 29-DEC-15

SQL> select * from v$logfile;

GROUP# STATUS TYPE MEMBER IS_

---------- ------- ------- ------------------------------------------

1 ONLINE /u01/app/oracle/oradata/orcl/redo01.log NO

2 ONLINE /u01/app/oracle/oradata/orcl/redo02.log NO

3 ONLINE /u01/app/oracle/oradata/orcl/redo03.log NO

SQL&get; alter system switch logfile;

System altered.

++++Session 2

[root@zw_test_26_75 ~]# dd if=/dev/null of=/u01/app/oracle/oradata/orcl/redo01.log bs=512 count=10

0+0 records in

0+0 records out

0 bytes (0 B) copied, 0.000121435 s, 0.0 kB/s

++++Session 1

SQL> shutdown immediate

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL> startup

ORACLE instance started.

Total System Global Area 952020992 bytes

Fixed Size 2258960 bytes

Variable Size 314574832 bytes

Database Buffers 629145600 bytes

Redo Buffers 6041600 bytes

Database mounted.

ORA-00313: open failed for members of log group 1 of thread 1

ORA-00312: online log 1 thread 1: '/u01/app/oracle/oradata/orcl/redo01.log'

ORA-27048: skgfifi: file header information is invalid

Additional information: 13

SQL> recover database until cancel;

Media recovery complete.

alter database open

*

ERROR at line 1:

ORA-01589: must use RESETLOGS or NORESETLOGS option for database open

SQL> alter database open resetlogs;

alter database open resetlogs

*

ERROR at line 1:

ORA-00327: log 2 of thread 1, physical size less than needed

ORA-00312: online log 2 thread 1: '/home/ora10g/oradata/roger/redo02.log'

创建pfile添加隐含参数

#*._allow_resetlogs_corruption=true

#*._allow_error_simulation=true

SQL> startup mount pfile='/tmp/pfile.ora';

ORACLE instance started.

Total System Global Area 952020992 bytes

Fixed Size 2258960 bytes

Variable Size 314574832 bytes

Database Buffers 629145600 bytes

Redo Buffers 6041600 bytes

Database mounted.

SQL> alter database open resetlogs;

alter database open resetlogs

*

ERROR at line 1:

ORA-01139: RESETLOGS option only valid after an incomplete database recovery

SQL> recover database until cancel;

ORA-00283: recovery session canceled due to errors

ORA-16433: The database must be opened in read/write mode.

或者下面那个错

SQL> recover database until cancel;

ORA-00283: recovery session canceled due to errors

ORA-00600: internal error code, arguments: [2130], [0], [8], [2], [], [], [], []

SQL> show parameter resetlog

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------

_allow_resetlogs_corruption boolean TRUE

SQL> show parameter allow

NAME TYPE VALUE

------------------------------------ ----------- ------------------------------

_allow_error_simulation boolean TRUE

_allow_resetlogs_corruption boolean TRUE

SQL> alter database open;

Database altered.

SQL> alter system switch logfile;

System altered.

SQL> /

System altered.

SQL> /

SQL> shutdown immediate

Database closed.

Database dismounted.

ORACLE instance shut down.

[oracle@zw_test_26_75 tmp]$ vi pfile.ora

去掉隐含参数

#*._allow_resetlogs_corruption=true

#*._allow_error_simulation=true

SQL> startup

ORACLE instance started.

Total System Global Area 952020992 bytes

Fixed Size 2258960 bytes

Variable Size 314574832 bytes

Database Buffers 629145600 bytes

Redo Buffers 6041600 bytes

Database mounted.

Database opened.