断电引起文件scn异常数据库恢复

发表于 2024 年 03 月 03 日 由 惜分飞

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标题：断电引起文件scn异常数据库恢复

作者：惜分飞©版权所有[未经本人同意,不得以任何形式转载,否则有进一步追究法律责任的权利.]

由于异常断电，数据库最初启动报错

Fri Mar 01 08:41:17 2024
ALTER DATABASE   MOUNT
Successful mount of redo thread 1, with mount id 1865809648
Database mounted in Exclusive Mode
Lost write protection disabled
Completed: ALTER DATABASE   MOUNT
Fri Mar 01 08:41:24 2024
ALTER DATABASE OPEN
Errors in file /home/oracle/app/diag/rdbms/XFF/XFF/trace/XFF_ora_25243.trc:
ORA-01113: file 13 needs media recovery
ORA-01110: data file 13: '/data2/oracle/oradata/data/data00.dbf'
ORA-1113 signalled during: ALTER DATABASE OPEN...

经过应用厂商一系列操作，主要是如下操作

Fri Mar 01 11:10:56 2024
ALTER DATABASE RECOVER  datafile 13  
Media Recovery Start
Serial Media Recovery started
WARNING! Recovering data file 13 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
ORA-279 signalled during: ALTER DATABASE RECOVER  datafile 13  ...
Fri Mar 01 11:11:09 2024
ALTER DATABASE RECOVER    CONTINUE DEFAULT  
Media Recovery Log /home/oracle/app/flash_recovery_area/XFF/archivelog/2024_03_01/o1_mf_1_153563_%u_.arc
Errors with log /home/oracle/app/flash_recovery_area/XFF/archivelog/2024_03_01/o1_mf_1_153563_%u_.arc
ORA-308 signalled during: ALTER DATABASE RECOVER    CONTINUE DEFAULT  ...
ALTER DATABASE RECOVER    CONTINUE DEFAULT  
Media Recovery Log /home/oracle/app/flash_recovery_area/XFF/archivelog/2024_03_01/o1_mf_1_153563_%u_.arc
Errors with log /home/oracle/app/flash_recovery_area/XFF/archivelog/2024_03_01/o1_mf_1_153563_%u_.arc
ORA-308 signalled during: ALTER DATABASE RECOVER    CONTINUE DEFAULT  ...
ALTER DATABASE RECOVER CANCEL 
Media Recovery Canceled
Completed: ALTER DATABASE RECOVER CANCEL 
Fri Mar 01 11:16:50 2024
db_recovery_file_dest_size of 10240 MB is 0.00% used. This is a
user-specified limit on the amount of space that will be used by this
database for recovery-related files, and does not reflect the amount of
space available in the underlying filesystem or ASM diskgroup.
Fri Mar 01 11:51:56 2024
Starting ORACLE instance (normal)
Fri Mar 01 12:11:35 2024
alter database datafile 13 offline
ORA-1145 signalled during: alter database datafile 13 offline...
Fri Mar 01 12:12:29 2024
alter database recover cancel
ORA-1112 signalled during: alter database recover cancel...
Fri Mar 01 12:13:24 2024
ALTER DATABASE RECOVER  database until cancel  
Media Recovery Start
 started logmerger process
Fri Mar 01 12:13:24 2024
WARNING! Recovering data file 13 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 14 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 15 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 16 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 17 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 18 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 19 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 20 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 21 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
WARNING! Recovering data file 22 from a fuzzy backup. It might be an online
backup taken without entering the begin backup command.
Parallel Media Recovery started with 48 slaves
ORA-279 signalled during: ALTER DATABASE RECOVER  database until cancel  ...
ALTER DATABASE RECOVER    CONTINUE DEFAULT  
Media Recovery Log /home/oracle/app/flash_recovery_area/XFF/archivelog/2024_03_01/o1_mf_1_153563_%u_.arc
Errors with log /home/oracle/app/flash_recovery_area/XFF/archivelog/2024_03_01/o1_mf_1_153563_%u_.arc
Errors in file /home/oracle/app/diag/rdbms/XFF/XFF/trace/XFF_pr00_38097.trc:
ORA-00308:cannot open archived log '/home/app/flash_recovery_area/XFF/archivelog/2024_03_01/o1_mf_1_153563_%u_.arc'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
ORA-308 signalled during: ALTER DATABASE RECOVER    CONTINUE DEFAULT  ...
ALTER DATABASE RECOVER    CONTINUE DEFAULT  
Media Recovery Log /home/oracle/app/flash_recovery_area/XFF/archivelog/2024_03_01/o1_mf_1_153563_%u_.arc
Errors with log /home/oracle/app/flash_recovery_area/XFF/archivelog/2024_03_01/o1_mf_1_153563_%u_.arc
Errors in file /home/oracle/app/diag/rdbms/XFF/XFF/trace/XFF_pr00_38097.trc:
ORA-00308:cannot open archived log '/home/app/flash_recovery_area/XFF/archivelog/2024_03_01/o1_mf_1_153563_%u_.arc'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3
ORA-308 signalled during: ALTER DATABASE RECOVER    CONTINUE DEFAULT  ...
ALTER DATABASE RECOVER CANCEL 
Signalling error 1152 for datafile 1!
Errors in file /home/oracle/app/diag/rdbms/XFF/XFF/trace/XFF_pr00_38097.trc:
ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below
ORA-01152: file 1 was not restored from a sufficiently old backup 
ORA-01110: data file 1: '/data1/oracle/oradata/XFF/system01.dbf'
Slave exiting with ORA-1547 exception
Errors in file /home/oracle/app/diag/rdbms/XFF/XFF/trace/XFF_pr00_38097.trc:
ORA-01547: warning: RECOVER succeeded but OPEN RESETLOGS would get error below
ORA-01152: file 1 was not restored from a sufficiently old backup 
ORA-01110: data file 1: '/data1/oracle/oradata/XFF/system01.dbf'
ORA-10879 signalled during: ALTER DATABASE RECOVER CANCEL ...
Fri Mar 01 13:23:05 2024
ALTER DATABASE DATAFILE '/data2/oracle/oradata/data/data00.dbf' OFFLINE DROP
Completed: ALTER DATABASE DATAFILE '/data2/oracle/oradata/data/data00.dbf' OFFLINE DROP

接手现场之后,尝试单个文件recover操作

SQL> recover datafile 1;
ORA-00283: recovery session canceled due to errors
ORA-00264: no recovery required
SQL> recover datafile 2;
Media recovery complete.
SQL> recover datafile 3;
Media recovery complete.
SQL> recover datafile 4;
Media recovery complete.
SQL> recover datafile 5;
Media recovery complete.
SQL> recover datafile 6,7,8,9,10;
Media recovery complete.
SQL> recover datafile 11;
Media recovery complete.
SQL> recover datafile 12;
Media recovery complete.
SQL> recover datafile 13;
ORA-00279: change 1474236715 generated at 02/29/2024 17:13:00 needed for thread 1
ORA-00289: suggestion : /home/oracle/app/program/11g/dbs/arch1_153563_1136037378.dbf
ORA-00280: change 1474236715 for thread 1 is in sequence #153563


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

ORA-00308: cannot open archived log '/home/oracle/app/program/11g/dbs/arch1_153563_1136037378.dbf'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3


SQL> recover datafile 14;
ORA-00279: change 1474236715 generated at 02/29/2024 17:13:00 needed for thread 1
ORA-00289: suggestion : /home/oracle/app/program/11g/dbs/arch1_153563_1136037378.dbf
ORA-00280: change 1474236715 for thread 1 is in sequence #153563


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

ORA-00308: cannot open archived log '/home/oracle/app/program/11g/dbs/arch1_153563_1136037378.dbf'
ORA-27037: unable to obtain file status
Linux-x86_64 Error: 2: No such file or directory
Additional information: 3

基于这样的情况,通过Oracle数据库异常恢复检查脚本(Oracle Database Recovery Check)检查发现/data2挂载点所有数据文件异常,由于以前的操作日志已经被清空无法判断原因,初步怀疑和这个挂载点本身有关系
20240303160404
20240303160524
这种情况直接使用bbed修改文件头,然后open库,再逻辑导出数据,完成本次数据恢复工作,参考类似文档
bbed 修改datafile header
使用bbed让rac中的sysaux数据文件online
当然这类故障也可以通过自研的Oracle Recovery Tools工具进行修复处理,类似文档:
Oracle Recovery Tools解决ORA-00279 ORA-00289 ORA-00280故障

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