07 oracle 非归档模式 inactive/active/current redo log损坏的恢复

在非归档模式下缺失Redo Log后的恢复

将之前的归档模式修改为非归档

SQL> shutdown immediate;

SQL> startup mount

SQL> alter database noarchivelog;

SQL> alter database open;

SQL> archive log list;

Database log mode           No Archive Mode

Automatic archival           Disabled

Archive destination           USE_DB_RECOVERY_FILE_DEST

Oldest online log sequence     4

Current log sequence           6

1.Inactive redo log丢失或损坏的恢复

SQL> select * from v$log;

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

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

     1        1          10   52428800       512        2 NO  INACTIVE             9783033 06-JUN-19        9783036 06-JUN-19

     2        1          11   52428800       512        1 NO  INACTIVE             9783036 06-JUN-19        9783039 06-JUN-19

     3        1          12   52428800       512        1 NO  CURRENT             9783039 06-JUN-19     2.8147E+14

SQL> col member format a50

SQL> select * from v$logfile;

    GROUP# STATUS  TYPE    MEMBER                          IS_

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

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

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

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

     1       ONLINE  /u01/app/oracle/oradata/orcl/redo11.log          NO

[oracle@DSI ~]$ dd if=/dev/null of=/u01/app/oracle/oradata/orcl/redo02.log bs=512 count=20

0+0 records in

0+0 records out

0 bytes (0 B) copied, 0.00010096 s, 0.0 kB/s

SQL> shutdown immediate

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL> startup;

ORACLE instance started.

Total System Global Area  784998400 bytes

Fixed Size            2257352 bytes

Variable Size          478154296 bytes

Database Buffers      297795584 bytes

Redo Buffers            6791168 bytes

Database mounted.

ORA-03113: end-of-file on communication channel

Process ID: 6945

Session ID: 125 Serial number: 5

SQL> exit

alert日志

[oracle@DSI ~]$ tail -f -n 300 /u01/app/oracle/diag/rdbms/orcl/orcl/trace/alert_orcl.log

ALTER DATABASE OPEN

Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_lgwr_6925.trc:

ORA-00313: open failed for members of log group 2 of thread 1

ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/orcl/redo02.log'

ORA-27047: unable to read the header block of file

Linux-x86_64 Error: 25: Inappropriate ioctl for device

Additional information: 1

Thu Jun 06 11:18:37 2019

Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_m000_7006.trc:

ORA-00316: log 2 of thread 1, type 0 in header is not log file

ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/orcl/redo02.log'

Checker run found 2 new persistent data failures

Completed: alter database clear logfile group 2

[oracle@DSI ~]$ sqlplus / as sysdba

SQL> startup mount

SQL> select * from v$log;

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

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

     1        1          10   52428800       512        2 NO  INACTIVE             9783033 06-JUN-19        9783036 06-JUN-19

     3        1          12   52428800       512        1 NO  CURRENT             9783039 06-JUN-19     2.8147E+14

     2        1          11   52428800       512        1 NO  INACTIVE             9783036 06-JUN-19        9783039 06-JUN-19

SQL> alter database clear logfile group 2;

Database altered.

SQL> alter database open;

Database altered.

SQL> alter system switch logfile;

System altered.

SQL> /

System altered.

SQL> select count(*) from test.t7;

  COUNT(*)

----------

      1000

2.Active redo log丢失或损坏的恢复

SQL> select * from v$log;

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

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

     1        1          17   52428800       512        2 NO  ACTIVE             9792160 06-JUN-19        9792165 06-JUN-19

     2        1          16   52428800       512        1 NO  ACTIVE             9783839 06-JUN-19        9792160 06-JUN-19

     3        1          18   52428800       512        1 NO  CURRENT             9792165 06-JUN-19     2.8147E+14

[oracle@DSI ~]$ dd if=/dev/null of=/u01/app/oracle/oradata/orcl/redo02.log bs=512 count=20

0+0 records in

0+0 records out

0 bytes (0 B) copied, 8.7827e-05 s, 0.0 kB/s

insert into t7 values(11,'AAAAAA');

alter system switch logfile;

SQL> select count(*) from t7;

  COUNT(*)

----------

      1001

进行多次切换后，

SQL>  select * from v$log;

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

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

     1        1          26   52428800       512        2 NO  ACTIVE             9792529 06-JUN-19        9792536 06-JUN-19

     2        1          25   52428800       512        1 NO  ACTIVE             9792524 06-JUN-19        9792529 06-JUN-19

     3        1          27   52428800       512        1 NO  CURRENT             9792536 06-JUN-19     2.8147E+14

发现被dd的redo02.log 没有任何影响，只要不关闭数据库
这里分别使用shutdown immediate/shutdown abort进行测试

##shutdown immediate;

SQL> shutdown immediate;

ORA-01031: insufficient privileges

SQL> conn / as sysdba

Connected.

SQL> shutdown immediate;

Database closed.

Database dismounted.

ORACLE instance shut down.

SQL> startup;

ORACLE instance started.

Total System Global Area  784998400 bytes

Fixed Size            2257352 bytes

Variable Size          478154296 bytes

Database Buffers      297795584 bytes

Redo Buffers            6791168 bytes

Database mounted.

ORA-03113: end-of-file on communication channel

Process ID: 7956

Session ID: 125 Serial number: 5

alert log

ALTER DATABASE OPEN

Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_lgwr_7936.trc:

ORA-00313: open failed for members of log group 2 of thread 1

ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/orcl/redo02.log'

ORA-27047: unable to read the header block of file

Linux-x86_64 Error: 25: Inappropriate ioctl for device

Additional information: 1

SQL> set linesize 1000

SQL> select * from v$log;

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

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

     1        1          26   52428800       512        2 NO  INACTIVE             9792529 06-JUN-19        9792536 06-JUN-19

     3        1          27   52428800       512        1 NO  CURRENT             9792536 06-JUN-19     2.8147E+14

     2        1          25   52428800       512        1 NO  INACTIVE             9792524 06-JUN-19        9792529 06-JUN-19

SQL> alter database clear logfile group 2;

Database altered.

SQL> alter database open;

Database altered.

SQL> select * from v$log;

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

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

     1        1          26   52428800       512        2 NO  INACTIVE             9792529 06-JUN-19        9792536 06-JUN-19

     2        1           0   52428800       512        1 NO  UNUSED             9792524 06-JUN-19        9792529 06-JUN-19

     3        1          27   52428800       512        1 NO  CURRENT             9792536 06-JUN-19     2.8147E+14

SQL> alter system switch logfile;

SQL> select * from v$log;

##使用shutdown abort测试

SQL> conn test/test

Connected.

SQL> insert into t7 values(11,'AAAAAA');

SQL>  select * from v$log;

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

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

     1        1          32   52428800       512        2 NO  ACTIVE             9793080 06-JUN-19        9793110 06-JUN-19

     2        1          34   52428800       512        1 NO  CURRENT             9793115 06-JUN-19     2.8147E+14

     3        1          33   52428800       512        1 NO  ACTIVE             9793110 06-JUN-19        9793115 06-JUN-19

[oracle@DSI ~]$ dd if=/dev/null of=/u01/app/oracle/oradata/orcl/redo03.log bs=512 count=20

SQL> shutdown abort;

ORACLE instance shut down.

SQL> startup

ORACLE instance started.

Total System Global Area  784998400 bytes

Fixed Size            2257352 bytes

Variable Size          478154296 bytes

Database Buffers      297795584 bytes

Redo Buffers            6791168 bytes

Database mounted.

ORA-00313: open failed for members of log group 3 of thread 1

ORA-00312: online log 3 thread 1: '/u01/app/oracle/oradata/orcl/redo03.log'

ORA-27047: unable to read the header block of file

Linux-x86_64 Error: 25: Inappropriate ioctl for device

Additional information: 1

---

ALTER DATABASE OPEN

Beginning crash recovery of 1 threads

 parallel recovery started with 2 processes

Started redo scan

Errors in file /u01/app/oracle/diag/rdbms/orcl/orcl/trace/orcl_ora_8099.trc:

ORA-00313: open failed for members of log group 3 of thread 1

ORA-00312: online log 3 thread 1: '/u01/app/oracle/oradata/orcl/redo03.log'

ORA-27047: unable to read the header block of file

Linux-x86_64 Error: 25: Inappropriate ioctl for device

Additional information: 1

---

SQL> alter database clear logfile group 3;

alter database clear logfile group 3

*

ERROR at line 1:

ORA-01624: log 3 needed for crash recovery of instance orcl (thread 1)

ORA-00312: online log 3 thread 1: '/u01/app/oracle/oradata/orcl/redo03.log'

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-00279: change 9793080 generated at 06/06/2019 15:42:14 needed for thread 1

ORA-00289: suggestion :

/u01/app/oracle/fra/ORCL/archivelog/2019_06_06/o1_mf_1_32_%u_.arc

ORA-00280: change 9793080 for thread 1 is in sequence #32

Specify log: {<RET>=suggested | filename | AUTO | CANCEL}

ORA-00308: cannot open archived log

'/u01/app/oracle/fra/ORCL/archivelog/2019_06_06/o1_mf_1_32_%u_.arc'

ORA-27037: unable to obtain file status

Linux-x86_64 Error: 2: No such file or directory

Additional information: 3

ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below

ORA-01194: file 1 needs more recovery to be consistent

ORA-01110: data file 1: '/u01/app/oracle/oradata/orcl/system01.dbf'

SQL> alter database open resetlogs;

alter database open resetlogs

*

ERROR at line 1:

ORA-01194: file 1 needs more recovery to be consistent

ORA-01110: data file 1: '/u01/app/oracle/oradata/orcl/system01.dbf'

与归档模式下的active恢复类似，添加2个隐含参数

SQL> shutdown immediate;

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

SQL>  alter database open resetlogs;

SQL> set linesize 1000

SQL> select * from v$log;

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

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

     1        1           1   52428800       512        2 NO  CURRENT             9793081 06-JUN-19     2.8147E+14

     2        1           0   52428800       512        1 YES UNUSED               0              0

     3        1           0   52428800       512        1 YES UNUSED               0              0

SQL> alter system switch logfile;

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        2 NO  INACTIVE             9793443 06-JUN-19        9793446 06-JUN-19

     2        1           5   52428800       512        1 NO  INACTIVE             9793446 06-JUN-19        9793449 06-JUN-19

     3        1           6   52428800       512        1 NO  CURRENT             9793449 06-JUN-19     2.8147E+14

SQL> select count(*) from test.t7;

  COUNT(*)

----------

      1005

[oracle@DSI ~]$ tail -f -n 300 /u01/app/oracle/diag/rdbms/orcl/orcl/trace/alert_orcl.log

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07 oracle 非归档模式 inactive/active/current redo log损坏的恢复

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