linux rm误删除数据库文件的恢复方法_LINUX_操作系统_

1.首先测试rm 误删除数据库文件

[oracle@primary dbwdn]$ ll
total 2153164
-rw-r----- 1 oracle dba 8536064 Nov 27 21:50 control01.ctl
-rw-r----- 1 oracle dba 8536064 Nov 27 21:50 control02.ctl
-rw-r----- 1 oracle dba 8536064 Nov 27 21:50 control03.ctl
-rw-r----- 1 oracle dba 104865792 Nov 27 21:32 ggs01.dbf
-rw-r----- 1 oracle dba 525344768 Nov 27 21:32 perfstat.dbf
-rw-r----- 1 oracle dba 52429312 Nov 27 21:10 redo01.log
-rw-r----- 1 oracle dba 52429312 Nov 27 21:49 redo02.log
-rw-r----- 1 oracle dba 52429312 Nov 27 21:10 redo03.log
-rw-r----- 1 oracle dba 10493952 Nov 27 21:32 shkz_data_01.dbf
-rw-r----- 1 oracle dba 524296192 Nov 27 21:49 sysaux01.dbf
-rw-r----- 1 oracle dba 524296192 Nov 27 21:49 system01.dbf
-rw-r----- 1 oracle dba 209723392 Nov 18 10:54 temp01.dbf
-rw-r----- 1 oracle dba 52436992 Nov 27 21:32 test01.dbf
-rw-r----- 1 oracle dba 251666432 Nov 27 21:49 undotbs01.dbf
-rw-r----- 1 oracle dba 26222592 Nov 27 21:32 users01.dbf
[oracle@primary dbwdn]$ rm test01.dbf

2.找到数据库后台进程dbw0

oracle 3493 1 0 21:10 ? 00:00:00 ora_dbw0_dbwdn
进程号3493

3.找到被误删除的数据库文件

[oracle@primary dbwdn]$ ll /proc/3493/fd
total 0
lr-x------ 1 oracle oinstall 64 Nov 27 21:52 0 -> /dev/null
lr-x------ 1 oracle oinstall 64 Nov 27 21:52 1 -> /dev/null
lr-x------ 1 oracle oinstall 64 Nov 27 21:52 10 -> /dev/zero
lr-x------ 1 oracle oinstall 64 Nov 27 21:52 11 -> /dev/zero
lr-x------ 1 oracle oinstall 64 Nov 27 21:52 12 -> /u01/app/oracle/product/10.2.0/db_1/rdbms/mesg/oraus.msb
lrwx------ 1 oracle oinstall 64 Nov 27 21:52 13 -> /u01/app/oracle/product/10.2.0/db_1/dbs/hc_dbwdn.dat
lrwx------ 1 oracle oinstall 64 Nov 27 21:52 14 -> /u01/app/oracle/product/10.2.0/db_1/dbs/lkDBWDN
lrwx------ 1 oracle oinstall 64 Nov 27 21:52 15 -> /u01/app/oracle/oradata/dbwdn/control01.ctl
lrwx------ 1 oracle oinstall 64 Nov 27 21:52 16 -> /u01/app/oracle/oradata/dbwdn/control02.ctl
lrwx------ 1 oracle oinstall 64 Nov 27 21:52 17 -> /u01/app/oracle/oradata/dbwdn/control03.ctl
lrwx------ 1 oracle oinstall 64 Nov 27 21:52 18 -> /u01/app/oracle/oradata/dbwdn/system01.dbf
lrwx------ 1 oracle oinstall 64 Nov 27 21:52 19 -> /u01/app/oracle/oradata/dbwdn/undotbs01.dbf
lr-x------ 1 oracle oinstall 64 Nov 27 21:52 2 -> /dev/null
lrwx------ 1 oracle oinstall 64 Nov 27 21:52 20 -> /u01/app/oracle/oradata/dbwdn/sysaux01.dbf
lrwx------ 1 oracle oinstall 64 Nov 27 21:52 21 -> /u01/app/oracle/oradata/dbwdn/users01.dbf
lrwx------ 1 oracle oinstall 64 Nov 27 21:52 22 -> /u01/app/oracle/oradata/dbwdn/test01.dbf (deleted)
lrwx------ 1 oracle oinstall 64 Nov 27 21:52 23 -> /u01/app/oracle/oradata/dbwdn/ggs01.dbf
lrwx------ 1 oracle oinstall 64 Nov 27 21:52 24 -> /u01/app/oracle/oradata/dbwdn/perfstat.dbf
lrwx------ 1 oracle oinstall 64 Nov 27 21:52 25 -> /u01/app/oracle/oradata/dbwdn/shkz_data_01.dbf
lrwx------ 1 oracle oinstall 64 Nov 27 21:52 26 -> /u01/app/oracle/oradata/dbwdn/temp01.dbf
lr-x------ 1 oracle oinstall 64 Nov 27 21:52 27 -> /u01/app/oracle/product/10.2.0/db_1/rdbms/mesg/oraus.msb
lr-x------ 1 oracle oinstall 64 Nov 27 21:52 3 -> /dev/null
lr-x------ 1 oracle oinstall 64 Nov 27 21:52 4 -> /dev/null
l-wx------ 1 oracle oinstall 64 Nov 27 21:52 5 -> /u01/app/oracle/admin/dbwdn/udump/dbwdn_ora_3485.trc
l-wx------ 1 oracle oinstall 64 Nov 27 21:52 6 -> /u01/app/oracle/admin/dbwdn/bdump/alert_dbwdn.log
lrwx------ 1 oracle oinstall 64 Nov 27 21:52 7 -> /u01/app/oracle/product/10.2.0/db_1/dbs/hc_dbwdn.dat
l-wx------ 1 oracle oinstall 64 Nov 27 21:52 8 -> /u01/app/oracle/admin/dbwdn/bdump/alert_dbwdn.log
误删除之后，数据库没有重启，系统也没用重启

4.拷贝数据库文件

[oracle@primary ~]$ cp /proc/3493/fd/22 /u01/app/oracle/oradata/dbwdn/test01.dbf
[oracle@primary ~]$ cd /u01/app/oracle/oradata/dbwdn
[oracle@primary dbwdn]$ ls
control01.ctl control03.ctl perfstat.dbf redo02.log shkz_data_01.dbf system01.dbf test01.dbf users01.dbf
control02.ctl ggs01.dbf redo01.log redo03.log sysaux01.dbf temp01.dbf undotbs01.dbf
数据库文件找回来了。

5.恢复数据库文件

[oracle@primary dbwdn]$ sqlplus "/as sysdba"
SQL*Plus: Release 10.2.0.5.0 - Production on Tue Nov 27 21:55:15 2012
Copyright (c) 1982, 2010, Oracle. All Rights Reserved.

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> alter database datafile 5 offline;
Database altered.
SQL> recover datafile 5;
Media recovery complete.
SQL> alter database datafile 5 online;
Database altered.
SQL> shutdown immediate;
Database closed.
Database dismounted.
ORACLE instance shut down.
SQL> startup
ORACLE instance started.
Total System Global Area 285212672 bytes
Fixed Size 1273276 bytes
Variable Size 130024004 bytes
Database Buffers 150994944 bytes
Redo Buffers 2920448 bytes
Database mounted.
Database opened.
SQL>

成功恢复数据库

注：如果数据库重启之后，还能恢复吗，测试一下：

[oracle@primary dbwdn]$ rm users01.dbf[oracle@primary dbwdn]$ ps -ef |grep dbw0
oracle 3798 1 0 21:56 ? 00:00:00 ora_dbw0_dbwdn
oracle 4147 3439 0 22:07 pts/1 00:00:00 grep dbw0
[oracle@primary dbwdn]$ ll /proc/3798/fd
total 0
lr-x------ 1 oracle oinstall 64 Nov 27 22:07 0 -> /dev/null
lr-x------ 1 oracle oinstall 64 Nov 27 22:07 1 -> /dev/null
lr-x------ 1 oracle oinstall 64 Nov 27 22:07 10 -> /dev/zero
lr-x------ 1 oracle oinstall 64 Nov 27 22:07 11 -> /dev/zero
lr-x------ 1 oracle oinstall 64 Nov 27 22:07 12 -> /u01/app/oracle/product/10.2.0/db_1/rdbms/mesg/oraus.msb
lrwx------ 1 oracle oinstall 64 Nov 27 22:07 13 -> /u01/app/oracle/product/10.2.0/db_1/dbs/hc_dbwdn.dat
lrwx------ 1 oracle oinstall 64 Nov 27 22:07 14 -> /u01/app/oracle/product/10.2.0/db_1/dbs/lkDBWDN
lrwx------ 1 oracle oinstall 64 Nov 27 22:07 15 -> /u01/app/oracle/oradata/dbwdn/control01.ctl
lrwx------ 1 oracle oinstall 64 Nov 27 22:07 16 -> /u01/app/oracle/oradata/dbwdn/control02.ctl
lrwx------ 1 oracle oinstall 64 Nov 27 22:07 17 -> /u01/app/oracle/oradata/dbwdn/control03.ctl
lrwx------ 1 oracle oinstall 64 Nov 27 22:07 18 -> /u01/app/oracle/oradata/dbwdn/system01.dbf
lrwx------ 1 oracle oinstall 64 Nov 27 22:07 19 -> /u01/app/oracle/oradata/dbwdn/undotbs01.dbf
lr-x------ 1 oracle oinstall 64 Nov 27 22:07 2 -> /dev/null
lrwx------ 1 oracle oinstall 64 Nov 27 22:07 20 -> /u01/app/oracle/oradata/dbwdn/sysaux01.dbf
lrwx------ 1 oracle oinstall 64 Nov 27 22:07 21 -> /u01/app/oracle/oradata/dbwdn/users01.dbf (deleted)lrwx------ 1 oracle oinstall 64 Nov 27 22:07 22 -> /u01/app/oracle/oradata/dbwdn/test01.dbf
lrwx------ 1 oracle oinstall 64 Nov 27 22:07 23 -> /u01/app/oracle/oradata/dbwdn/ggs01.dbf
lrwx------ 1 oracle oinstall 64 Nov 27 22:07 24 -> /u01/app/oracle/oradata/dbwdn/perfstat.dbf
lrwx------ 1 oracle oinstall 64 Nov 27 22:07 25 -> /u01/app/oracle/oradata/dbwdn/shkz_data_01.dbf

数据库没有重启，这个数据文件还能恢复，如果我重启数据库之后，还能看见这个数据文件吗？

[oracle@primary dbwdn]$ sqlplus "/as sysdba"
SQL*Plus: Release 10.2.0.5.0 - Production on Tue Nov 27 22:08:01 2012
Copyright (c) 1982, 2010, Oracle. All Rights Reserved.

Connected to:
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
SQL> shutdown immediate;
ORA-01116: error in opening database file 4
ORA-01110: data file 4: '/u01/app/oracle/oradata/dbwdn/users01.dbf'
ORA-27041: unable to open file
Linux Error: 2: No such file or directory
Additional information: 3
SQL> shutdown abort;ORACLE instance shut down.
SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@primary dbwdn]$ sqlplus "/as sysdba"
SQL*Plus: Release 10.2.0.5.0 - Production on Tue Nov 27 22:08:19 2012
Copyright (c) 1982, 2010, Oracle. All Rights Reserved.
Connected to an idle instance.
SQL> startup
ORACLE instance started.
Total System Global Area 285212672 bytes
Fixed Size 1273276 bytes
Variable Size 130024004 bytes
Database Buffers 150994944 bytes
Redo Buffers 2920448 bytes
Database mounted.
ORA-01157: cannot identify/lock data file 4 - see DBWR trace file
ORA-01110: data file 4: '/u01/app/oracle/oradata/dbwdn/users01.dbf'

SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
[oracle@primary dbwdn]$ ll /proc/3798/fd
ls: /proc/3798/fd: No such file or directory
[oracle@primary dbwdn]$ ps -ef |grep dbw0
oracle 4160 1 0 22:08 ? 00:00:00 ora_dbw0_dbwdn
oracle 4193 3439 0 22:09 pts/1 00:00:00 grep dbw0
[oracle@primary dbwdn]$ ll /proc/4160/fd
total 0
lr-x------ 1 oracle oinstall 64 Nov 27 22:09 0 -> /dev/null
lr-x------ 1 oracle oinstall 64 Nov 27 22:09 1 -> /dev/null
lr-x------ 1 oracle oinstall 64 Nov 27 22:09 10 -> /dev/zero
lr-x------ 1 oracle oinstall 64 Nov 27 22:09 11 -> /dev/zero
lr-x------ 1 oracle oinstall 64 Nov 27 22:09 12 -> /u01/app/oracle/product/10.2.0/db_1/rdbms/mesg/oraus.msb
lrwx------ 1 oracle oinstall 64 Nov 27 22:09 13 -> /u01/app/oracle/product/10.2.0/db_1/dbs/hc_dbwdn.dat
lrwx------ 1 oracle oinstall 64 Nov 27 22:09 14 -> /u01/app/oracle/product/10.2.0/db_1/dbs/lkDBWDN
lrwx------ 1 oracle oinstall 64 Nov 27 22:09 15 -> /u01/app/oracle/oradata/dbwdn/control01.ctl
lrwx------ 1 oracle oinstall 64 Nov 27 22:09 16 -> /u01/app/oracle/oradata/dbwd

提示： 本文由神整理自网络，如有侵权请联系本站删除！
本站声明：
1、本站所有资源均来源于互联网，不保证100%完整、不提供任何技术支持；
2、本站所发布的文章以及附件仅限用于学习和研究目的;不得将用于商业或者非法用途；否则由此产生的法律后果，本站概不负责！