断电引起的oracle数据库异常恢复----惜分飞

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标题：断电引起的oracle数据库异常恢复

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.]

服务器断电，数据库mount失败

SQL> startup mount pfile='d:/pfile.txt'

ORACLE 例程已经启动。

 

Total System Global Area 1185853440 bytes

Fixed Size                  2175168 bytes

Variable Size             335548224 bytes

Database Buffers          838860800 bytes

Redo Buffers                9269248 bytes

ORA-00205: ?????????, ??????, ???????

alert日志报错信息

Sun Mar 19 20:18:29 2023

ALTER DATABASE   MOUNT

Errors in file d:\app\xifenfei\diag\rdbms\orcl\orcl\trace\orcl_ckpt_15064.trc  (incident=3697):

ORA-00227: ????????????: (? 1, # ? 1)

ORA-00202: ????: ''D:\BAIDUNETDISKDOWNLOAD\ORCL\CONTROL01.CTL''

Incident details in: d:\app\xifenfei\diag\rdbms\orcl\orcl\incident\incdir_3697\orcl_ckpt_15064_i3697.trc

Sun Mar 19 20:18:30 2023

Errors in file d:\app\xifenfei\diag\rdbms\orcl\orcl\trace\orcl_m000_18084.trc  (incident=3761):

ORA-00227: ????????????: (? 1, # ? 1)

ORA-00202: ????: ''D:\BAIDUNETDISKDOWNLOAD\ORCL\CONTROL01.CTL''

Incident details in: d:\app\xifenfei\diag\rdbms\orcl\orcl\incident\incdir_3761\orcl_m000_18084_i3761.trc

Sun Mar 19 20:18:29 2023

MMNL started with pid=16, OS id=9404

ORA-00227: ????????????: (? 1, # ? 1)

ORA-00202: ????: ''D:\BAIDUNETDISKDOWNLOAD\ORCL\CONTROL01.CTL''

Checker run found 1 new persistent data failures

Trace dumping is performing id=[cdmp_20230319201831]

ORA-205 signalled during: ALTER DATABASE   MOUNT...

错误比较明显由于控制文件的block损坏导致数据库在mount的时候提示ORA-00205,重试重建ctl

SQL> CREATE CONTROLFILE REUSE DATABASE "orcl" NORESETLOGS  NOARCHIVELOG

  2      MAXLOGFILES 50

  3      MAXLOGMEMBERS 5

  4      MAXDATAFILES 100

  5      MAXINSTANCES 8

  6      MAXLOGHISTORY 226

  7  LOGFILE

  8    GROUP 1 'D:\BaiduNetdiskDownload\orcl/redo01.log'  SIZE 50M,

  9    GROUP 2 'D:\BaiduNetdiskDownload\orcl/redo02.log'  SIZE 50M,

 10    GROUP 3 'D:\BaiduNetdiskDownload\orcl/redo03.log'  SIZE 50M

 11  DATAFILE

 12  'D:\BaiduNetdiskDownload\orcl\EXAMPLE01.DBF',

 13  'D:\BaiduNetdiskDownload\orcl\GHZN.DBF',

 14  'D:\BaiduNetdiskDownload\orcl\GHZN2.DBF',

 15  'D:\BaiduNetdiskDownload\orcl\SYSAUX01.DBF',

 16  'D:\BaiduNetdiskDownload\orcl\SYSTEM01.DBF',

 17  'D:\BaiduNetdiskDownload\orcl\UNDOTBS01.DBF',

 18  'D:\BaiduNetdiskDownload\orcl\USERS01.DBF'

 19  CHARACTER SET ZHS16GBK

 20  ;

CREATE CONTROLFILE REUSE DATABASE "orcl" NORESETLOGS  NOARCHIVELOG

*

ERROR at line 1:

ORA-01503: CREATE CONTROLFILE failed

ORA-01565: error in identifying file

'D:\BaiduNetdiskDownload\orcl\UNDOTBS01.DBF'

ORA-27041: unable to open file

OSD-04001: 逻辑块大小无效 (OS 2613931212)

由于undo文件异常(大小不是block size的整数倍）,因此报OSD-04001: 逻辑块大小无效错误.对undo文件及其其他文件进行检查发现数据库文件有不少坏块,而且undo文件的文件头损坏

---

通过抛弃undo文件并进行一些处理,重建ctl成功,并且recover 数据库成功,顺利open数据库

SQL> CREATE CONTROLFILE REUSE DATABASE "orcl" NORESETLOGS  NOARCHIVELOG

  2      MAXLOGFILES 50

  3      MAXLOGMEMBERS 5

  4      MAXDATAFILES 100

  5      MAXINSTANCES 8

  6      MAXLOGHISTORY 226

  7  LOGFILE

  8    GROUP 1 'D:\BaiduNetdiskDownload\orcl/redo01.log'  SIZE 50M,

  9    GROUP 2 'D:\BaiduNetdiskDownload\orcl/redo02.log'  SIZE 50M,

 10    GROUP 3 'D:\BaiduNetdiskDownload\orcl/redo03.log'  SIZE 50M

 11  DATAFILE

 12  'D:\BaiduNetdiskDownload\orcl\EXAMPLE01.DBF',

 13  'D:\BaiduNetdiskDownload\orcl\GHZN.DBF',

 14  'D:\BaiduNetdiskDownload\orcl\GHZN2.DBF',

 15  'D:\BaiduNetdiskDownload\orcl\SYSAUX01.DBF',

 16  'D:\BaiduNetdiskDownload\orcl\SYSTEM01.DBF',

 17  'D:\BaiduNetdiskDownload\orcl\USERS01.DBF'

 18  CHARACTER SET ZHS16GBK

 19  ;

 

Control file created.

 

SQL> recover database;

Media recovery complete.

SQL> shutdown immediate;

ORA-01109: database not open

 

 

Database dismounted.

ORACLE instance shut down.

SQL> startup mount pfile='d:/pfile.txt'

ORACLE instance started.

 

Total System Global Area 1185853440 bytes

Fixed Size                  2175168 bytes

Variable Size             335548224 bytes

Database Buffers          838860800 bytes

Redo Buffers                9269248 bytes

Database mounted.

SQL> alter database open;

 

Database altered.

然后使用逻辑方式导出数据,运气不错业务文件没有任何坏块,system坏块在aud$上,无任何业务数据丢失.

• 恢复没有控制文件备份的rman数据文件备份
• 重建控制文件丢失数据文件导致悲剧
• 数据文件的三个创建SCN一点点探讨
• ora-600 kcratr_scan_lastbwr
• 分享一次ORA-01113 ORA-01110故障处理过程
• 重建control遗漏数据文件,reseltogs报ORA-1555错误处理
• 创建控制文件出现ORA-01565 ORA-27041 OSD-04002
• ORA-00600[kcrf_resilver_log_1]异常恢复
• ORA-00600 dbkif_find_next_record_1
• ora-600 kccpb_sanity_check_2故障处理
• 非归档数据库异常恢复一例
• ORA-600 kcratr_scan_lastbwr 恢复