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	<title>惜分飞 &#187; xfs恢复文件损坏</title>
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		<title>rm -rf 删除数据文件恢复方法&#8212;文件系统反删除+oracle碎片重组</title>
		<link>https://www.xifenfei.com/2021/03/rm-recovery-fragmentation-recovery.html</link>
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		<pubDate>Mon, 08 Mar 2021 12:35:48 +0000</pubDate>
		<dc:creator><![CDATA[惜分飞]]></dc:creator>
				<category><![CDATA[Oracle备份恢复]]></category>
		<category><![CDATA[dbf 碎片]]></category>
		<category><![CDATA[oracle碎片]]></category>
		<category><![CDATA[xfs恢复文件损坏]]></category>

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<p>联系：<a href="https://www.xifenfei.com/about_xifenfei" target="_blank">手机/微信(+86 17813235971)   QQ(107644445)</a><a target="_blank" href="http://wpa.qq.com/msgrd?v=3&#038;uin=107644445&#038;site=qq&#038;menu=yes"><img src="https://www.xifenfei.com/wp-content/themes/img/site_qq.jpg" alt="QQ咨询惜分飞" title="QQ咨询惜分飞"/></a></p>
<p>标题：<a href="https://www.xifenfei.com/2021/03/rm-recovery-fragmentation-recovery.html" target="_blank">rm -rf 删除数据文件恢复方法&#8212;文件系统反删除+oracle碎片重组</a></p>
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<p>最近有朋友公司运维人员,不小心在CentOS 8的操作系统上执行了rm -rf /*,导致系统无法启动,而且oracle数据库被删除.<br />
通过专业的xfs文件系统工具,尝试恢复<br />
<a href="https://www.xifenfei.com/wp-content/uploads/2021/03/20210306093412.png"><img src="https://www.xifenfei.com/wp-content/uploads/2021/03/20210306093412.png" alt="20210306093412" width="937" height="332" class="alignnone size-full wp-image-9102" /></a><br />
<hr />
通过对恢复出来的数据文件进行检测<br />
<a href="https://www.xifenfei.com/wp-content/uploads/2021/03/20210302181953.png"><img src="https://www.xifenfei.com/wp-content/uploads/2021/03/20210302181953.png" alt="20210302181953" width="999" height="483" class="alignnone size-full wp-image-9103" /></a><br />
<hr />
发现通过文件系统层面恢复的数据文件有大量坏块(由于文件系统层面有文件分配目录被覆盖导致恢复出来的部分连续block被空块代替),无法满足业务需求,对于此类情况,考虑通过底层碎片重组技术进行恢复<br />
<a href="https://www.xifenfei.com/wp-content/uploads/2021/03/20210308202839.png"><img src="https://www.xifenfei.com/wp-content/uploads/2021/03/20210308202839.png" alt="20210308202839" width="612" height="166" class="alignnone size-full wp-image-9104" /></a><br />
<hr />
参考以往类似文章<br />
<a href="https://www.xifenfei.com/2019/12/xfs-rm-datafile-recovery.html" title="xfs删除数据文件恢复" rel="noopener" target="_blank">xfs删除数据文件恢复</a><br />
<a href="https://www.xifenfei.com/2019/12/dbca-delete-and-rm-database-recovery.html" title="dbca删除库和rm删库恢复" rel="noopener" target="_blank">dbca删除库和rm删库恢复</a><br />
<a href="https://www.xifenfei.com/2018/10/restore-mis-operation-recovery.html" title="restore database误操作恢复" rel="noopener" target="_blank">restore database误操作恢复</a><br />
<a href="https://www.xifenfei.com/2020/03/mdf-0kb-recovery.html" title="sql server 数据库 mdf 0kb 恢复" rel="noopener" target="_blank">sql server 数据库 mdf 0kb 恢复</a><br />
<a href="https://www.xifenfei.com/2018/11/file-system-corruption-oracle-recovery.html" title="文件系统损坏导致数据文件异常恢复" rel="noopener" target="_blank">文件系统损坏导致数据文件异常恢复</a><br />
<a href="https://www.xifenfei.com/2018/05/datafile-size-0k-recovery.html" title="Oracle 数据文件大小为0kb或者文件丢失恢复" rel="noopener" target="_blank">Oracle 数据文件大小为0kb或者文件丢失恢复</a><br />
对于操作系统层面误删除了数据文件,一般优先考虑os层面反删除恢复,如果恢复效果不好,考虑数据库层面碎片重组技术进行恢复</p>
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