因为人员离职闹得不愉快,系统工程师离职后,由于公司未及时关闭其vpn,数据库服务器(Linux 6.5 Oracle 11.2.0.1)帐号未及时被修改,最后直接上去rm ORACLE_BASE给干掉,悲剧的是ORADATA目录也在里面,更加悲剧的是所有数据文件都在里面.也就是说数据库彻底被删除,而且没有任何备份.朋友咨询了我,让我给予支持.最后比较幸运,文件没有被覆盖,inode都还在,通过extundelete顺利恢复所有数据文件,控制文件,redo文件(extundelete恢复Linux被删除文件),数据库顺利打开,实现0丢失,算是一次完美的恢复
[root@DB1 tmp]# tar xvf extundelete-0.2.4.tar extundelete-0.2.4/extundelete-0.2.4/acinclude.m4extundelete-0.2.4/missingextundelete-0.2.4/autogen.shextundelete-0.2.4/aclocal.m4extundelete-0.2.4/configureextundelete-0.2.4/LICENSEextundelete-0.2.4/READMEextundelete-0.2.4/install-shextundelete-0.2.4/config.h.inextundelete-0.2.4/src/extundelete-0.2.4/src/extundelete.ccextundelete-0.2.4/src/block.hextundelete-0.2.4/src/kernel-jbd.hextundelete-0.2.4/src/insertionops.ccextundelete-0.2.4/src/block.cextundelete-0.2.4/src/cli.ccextundelete-0.2.4/src/extundelete-priv.hextundelete-0.2.4/src/extundelete.hextundelete-0.2.4/src/jfs_compat.hextundelete-0.2.4/src/Makefile.inextundelete-0.2.4/src/Makefile.amextundelete-0.2.4/configure.acextundelete-0.2.4/depcompextundelete-0.2.4/Makefile.inextundelete-0.2.4/Makefile.am[root@DB1 tmp]# cd extundelete-0.2.4[root@DB1 extundelete-0.2.4]# ./configure Configuring extundelete 0.2.4Writing generated files to disk[root@DB1 extundelete-0.2.4]# make && make installmake -s all-recursiveMaking all in srcMaking install in src /usr/bin/install -c extundelete '/usr/local/bin'[root@DB1 extundelete-0.2.4]# df -hFilesystem Size Used Avail Use% Mounted on/dev/sda3 244G 11G 221G 5% /tmpfs 16G 72K 16G 1% /dev/shm/dev/sda1 190M 62M 119M 35% /boot/dev/sdb1 2.0T 71M 1.9T 1% /home[root@DB1 extundelete-0.2.4]# umount /dev/sdb1umount: /home: device is busy. (In some cases useful info about processes that use the device is found by lsof(8) or fuser(1))[root@DB1 extundelete-0.2.4]# fuser -m -u /home/home: 3914c(oracle) 8372c(oracle)[root@DB1 extundelete-0.2.4]# kill -9 3914[root@DB1 extundelete-0.2.4]# fuser -m -u /home/home: 8372c(oracle)[root@DB1 extundelete-0.2.4]# kill -9 8372[root@DB1 extundelete-0.2.4]# fuser -m -u /home[root@DB1 extundelete-0.2.4]# umount /dev/sdb1[root@DB1 extundelete-0.2.4]# df -hFilesystem Size Used Avail Use% Mounted on/dev/sda3 244G 11G 221G 5% /tmpfs 16G 72K 16G 1% /dev/shm/dev/sda1 190M 62M 119M 35% /boot[root@DB1 extundelete-0.2.4]# extundelete /dev/sdb1 --restore-allNOTICE: Extended attributes are not restored.Loading filesystem metadata ... 16384 groups loaded.Loading journal descriptors ... 26542 descriptors loaded.Searching for recoverable inodes in directory / ... 18896 recoverable inodes found.Looking through the directory structure for deleted files ... 2 recoverable inodes still lost.Unable to restore inode 43778050 (file.43778050): Space has been reallocated.[root@DB1 extundelete-0.2.4]# lsacinclude.m4 autogen.sh config.h.in config.status configure.ac install-sh Makefile Makefile.in aclocal.m4 config.h config.log configure depcomp LICENSE Makefile.am missing [root@DB1 extundelete-0.2.4]# cd RECOVERED_FILES/[root@DB1 RECOVERED_FILES]# lsapp file.43778051 oracle oraInventory[root@DB1 RECOVERED_FILES]# cd app[root@DB1 app]# lsadmin cfgtoollogs diag oracle oradata orcl ORCL[root@DB1 app]# cd oradata[root@DB1 oradata]# lsorcl[root@DB1 oradata]# cd orcl[root@DB1 orcl]# lscontrol01.ctl redo01.log redo02.log redo03.log sysaux01.dbf system01.dbf undotbs01.dbf users01.dbf[root@DB1 orcl]# ls -ltrtotal 2908776-rw-r--r--. 1 root root 734011392 Nov 18 02:06 system01.dbf-rw-r--r--. 1 root root 1069555712 Nov 18 02:06 sysaux01.dbf-rw-r--r--. 1 root root 120594432 Nov 18 02:06 undotbs01.dbf-rw-r--r--. 1 root root 887365632 Nov 18 02:06 users01.dbf-rw-r--r--. 1 root root 9748480 Nov 18 02:06 control01.ctl-rw-r--r--. 1 root root 52429312 Nov 18 02:06 redo01.log-rw-r--r--. 1 root root 52429312 Nov 18 02:06 redo02.log-rw-r--r--. 1 root root 52429312 Nov 18 02:06 redo03.log[root@DB1 orcl]#
再次提醒各位:数据库备份重于一切,防天灾的同时还要防人灾,也希望圈子里面以后不要听到类似故障.
extundelete恢复Linux被删除文件gzexe加密shell脚本Heartbeat安装及简单配置配置Oracle ASM磁盘安装ORACLE db /tmp空间不足解决办法DRBD安装配置说明linux常用命令使用PXE刷XD
原文地址：记录一次rm -rf 删除数据文件异常恢复, 感谢原作者分享。 唯有斯人面上簌簌流下的，是点点无声无行的热泪。