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.
