win系统删除oracle数据文件恢复---惜分飞

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标题：win系统删除oracle数据文件恢复

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.]

有客户联系我们,说win平台下的数据库,在由于空间紧张,在关闭数据库的情况下删除的两个数据文件,导致数据库无法正常访问很多业务表,需要对其进行恢复,查看alert日志发现大概操作,删除文件之后,启动数据库失败

Completed: alter database mount exclusive

alter database open

Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_dbw0_4060.trc:

ORA-01157: cannot identify/lock data file 6 - see DBWR trace file

ORA-01110: data file 6: 'D:\DATASPACE\XXXXX.DBF'

ORA-27041: unable to open file

OSD-04002: 无法打开文件

O/S-Error: (OS 2) 系统找不到指定的文件。

Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_dbw0_4060.trc:

ORA-01157: cannot identify/lock data file 38 - see DBWR trace file

ORA-01110: data file 38: 'D:\DATASPACE\XXXXX24.DBF'

ORA-27041: unable to open file

OSD-04002: 无法打开文件

O/S-Error: (OS 2) 系统找不到指定的文件。

Tue Jun 27 14:50:28 2023

Checker run found 2 new persistent data failures

人工创建被删除文件,启动库报ORA-27047,OSD-04006等错误

Tue Jun 27 16:45:10 2023

ALTER DATABASE OPEN

Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_dbw0_5456.trc:

ORA-01157: cannot identify/lock data file 6 - see DBWR trace file

ORA-01110: data file 6: 'D:\DATASPACE\XXXXX.DBF'

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

OSD-04006: ReadFile() 失败, 无法读取文件

O/S-Error: (OS 38) 已到文件结尾。

offline相关数据文件,启动库成功,但是job开始报错

Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_dbw0_5456.trc:

ORA-01157: cannot identify/lock data file 38 - see DBWR trace file

ORA-01110: data file 38: 'D:\DATASPACE\XXXXX24.DBF'

ORA-27041: unable to open file

OSD-04002: 无法打开文件

O/S-Error: (OS 2) 系统找不到指定的文件。

Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_ora_648.trc:

ORA-01157: 无法标识/锁定数据文件 6 - 请参阅 DBWR 跟踪文件

ORA-01110: 数据文件 6: 'D:\DATASPACE\XXXXX.DBF'

ORA-1157 signalled during: ALTER DATABASE OPEN...

Tue Jun 27 16:48:43 2023

alter database datafile 'D:\DATASPACE\XXXXX.DBF' offline drop

Completed: alter database datafile 'D:\DATASPACE\XXXXX.DBF' offline drop

Tue Jun 27 16:49:08 2023

alter database open

Tue Jun 27 16:49:08 2023

Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_dbw0_5456.trc:

ORA-01157: cannot identify/lock data file 38 - see DBWR trace file

ORA-01110: data file 38: 'D:\DATASPACE\XXXXX24.DBF'

ORA-27041: unable to open file

OSD-04002: 无法打开文件

O/S-Error: (OS 2) 系统找不到指定的文件。

Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_ora_3976.trc:

ORA-01157: 无法标识/锁定数据文件 38 - 请参阅 DBWR 跟踪文件

ORA-01110: 数据文件 38: 'D:\DATASPACE\XXXXX24.DBF'

ORA-1157 signalled during: alter database open...

Tue Jun 27 16:49:08 2023

Checker run found 1 new persistent data failures

Tue Jun 27 16:49:28 2023

alter database datafile 'D:\DATASPACE\XXXXX24.DBF' offline drop

Completed: alter database datafile 'D:\DATASPACE\XXXXX24.DBF' offline drop

alter database open

Tue Jun 27 16:49:37 2023

Thread 1 opened at log sequence 145929

  Current log# 3 seq# 145929 mem# 0: D:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO03.LOG

Successful open of redo thread 1

MTTR advisory is disabled because FAST_START_MTTR_TARGET is not set

Tue Jun 27 16:49:37 2023

SMON: enabling cache recovery

Successfully onlined Undo Tablespace 2.

Verifying file header compatibility for 11g tablespace encryption..

Verifying 11g file header compatibility for tablespace encryption completed

SMON: enabling tx recovery

Database Characterset is ZHS16GBK

No Resource Manager plan active

Tue Jun 27 16:49:39 2023

replication_dependency_tracking turned off (no async multimaster replication found)

Starting background process QMNC

Tue Jun 27 16:49:40 2023

QMNC started with pid=21, OS id=6096

Completed: alter database open

Tue Jun 27 16:49:43 2023

db_recovery_file_dest_size of 4096 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.

Tue Jun 27 16:49:44 2023

Starting background process CJQ0

Tue Jun 27 16:49:44 2023

CJQ0 started with pid=142, OS id=6036

Tue Jun 27 16:49:48 2023

Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_j007_5184.trc:

ORA-12012: 自动执行作业 64 出错

ORA-00376: 此时无法读取文件 6

ORA-01110: 数据文件 6: 'D:\DATASPACE\XXXXX.DBF'

ORA-06512: 在 "XIFENFEI.XXXXXXXX", line 2897

ORA-06512: 在 line 1

Tue Jun 27 16:51:52 2023

Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_j000_2548.trc:

ORA-12012: 自动执行作业 64 出错

ORA-00376: 此时无法读取文件 6

ORA-01110: 数据文件 6: 'D:\DATASPACE\XXXXX.DBF'

ORA-06512: 在 "XIFENFEI.XXXXXXXX", line 2897

ORA-06512: 在 line 1

Tue Jun 27 16:54:44 2023

Starting background process SMCO

Tue Jun 27 16:54:44 2023

SMCO started with pid=42, OS id=908

Tue Jun 27 16:55:52 2023

接手现场之后,关闭数据库,使用操作系统层面反删除工具进行扫描恢复,发现其中一个文件(另外一个文件os层面无法恢复)

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通过工具检测恢复出来的数据文件,损坏的几个block是文件头部不涉及业务数据,运气不错

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另外一个数据文件,从os层面无法恢复,对于这种情况,只能基于底层的block层面进行恢复(恢复没有覆盖的block)

参考类似恢复案例:
win文件系统损坏oracle恢复
Oracle 数据文件大小为0kb或者文件丢失恢复
分享运气超级好的一次drop tablespace 数据恢复
恢复出来的两个数据文件,结合该编辑的其他数据文件通过dul工具恢复其中数据,最大程度抢救客户数据,减少损失.

 

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