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		<title>ORA-00314: log 3 of thread 1, expected sequence# N doesn&#8217;t match 0</title>
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<p>标题：<a href="https://www.xifenfei.com/2026/07/ora-00314-ora-00312-recovery.html" target="_blank">ORA-00314: log 3 of thread 1, expected sequence# N doesn&#8217;t match 0</a></p>
<p>作者：<a href="https://www.xifenfei.com" target="_blank">惜分飞</a>©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.]</p>
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<p>有朋友咨询一个Oracle数据库由于断电无法启动的问题,最初错误是一个非常常见的ORA-01113 ORA-01110错误<br />
<a href="https://www.xifenfei.com/wp-content/uploads/2026/07/ora-01113.png"><img src="https://www.xifenfei.com/wp-content/uploads/2026/07/ora-01113.png" alt="ora-01113" width="659" height="208" class="alignnone size-full wp-image-12264" /></a><br />
<hr />
对应的alert日志错误</p>
<pre class="brush: bash; title: ; notranslate">
Tue Jul 21 15:38:12 2026
ALTER DATABASE OPEN
Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_ora_4632.trc:
ORA-01113: 文件 2 需要介质恢复
ORA-01110: 数据文件 2: 'E:\APP\ADMINISTRATOR\ORADATA\ORCL\SYSAUX01.DBF'
ORA-1113 signalled during: ALTER DATABASE OPEN...
Tue Jul 21 15:38:12 2026
Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_m000_4948.trc:
ORA-00322: log 1 of thread 1 is not current copy
ORA-00312: online log 1 thread 1: 'E:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO01.LOG'
Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_m000_4948.trc:
ORA-00314: log 2 of thread 1, expected sequence# 6890 doesn't match 0
ORA-00312: online log 2 thread 1: 'E:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO02.LOG'
Errors in file d:\app\administrator\diag\rdbms\orcl\orcl\trace\orcl_m000_4948.trc:
ORA-00314: log 3 of thread 1, expected sequence# 6891 doesn't match 0
ORA-00312: online log 3 thread 1: 'E:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO03.LOG'
</pre>
<p>把数据文件拿到本地之后,尝试执行recover database操作</p>
<pre class="brush: sql; title: ; notranslate">
SQL&gt; recover database;
ORA-00283: 恢复会话因错误而取消
ORA-00314: 日志 3 (用于线程 1) 要求的 sequence# 6891 与 0 不匹配
ORA-00312: 联机日志 3 线程 1: 'H:\BAIDUNETDISK\ORCL\REDO03.LOG'
</pre>
<p>ORA-00314 ORA-00312这个错误比较常见,但是直接提示要求的 sequence# 6891 与 0 不匹配（后面不匹配的是0）的情况不常见.使用winhex打开redo文件<br />
<a href="https://www.xifenfei.com/wp-content/uploads/2026/07/seq0.jpg"><img src="https://www.xifenfei.com/wp-content/uploads/2026/07/seq0.jpg" alt="seq0" width="1188" height="759" class="alignnone size-full wp-image-12265" /></a><br />
<hr />
这里比较明显的redo的sequence变为了0,初步看感觉是被触发了logfile clear操作导致（我查找了故障前后的alert日志确认没有人工clear操作redolog）,但是数据库实例恢复刚好需要这个redo,因此数据库无法正常打开,基于这种情况,考虑重建ctl,然后强制打开库</p>
<pre class="brush: sql; title: ; notranslate">
SQL&gt; @rectl

CREATE CONTROLFILE REUSE DATABASE &quot;ORCL&quot; NORESETLOGS  NOARCHIVELOG
*
ERROR at line 1:
ORA-01503: CREATE CONTROLFILE failed
ORA-01229: data file 1 is inconsistent with logs
ORA-01110: data file 1: 'H:\BAIDUNETDISK\ORCL\SYSTEM01.DBF'
</pre>
<p>由于redo异常导致noresetlogs方式重建ctl报ORA-01229错误.对于这样的情况使用resetlogs方式重建成功,然后强制打开库</p>
<pre class="brush: sql; title: ; notranslate">
SQL&gt; recover database using backup controlfile;
ORA-00279: change 178744591 generated at 07/18/2026 18:55:48 needed for thread
1
ORA-00289: suggestion :
C:\APP\XFF\PRODUCT\11.2.0.1\DBHOME_1\RDBMS\ARC0000006891_1176155303.0001
ORA-00280: change 178744591 for thread 1 is in sequence #6891


Specify log: {&lt;RET&gt;=suggested | filename | AUTO | CANCEL}
H:\BAIDUNETDISK\ORCL\REDO03.LOG
ORA-00339: 归档日志未包含任何重做
ORA-00334: 归档日志: 'H:\BAIDUNETDISK\ORCL\REDO03.LOG'


SQL&gt; recover database using backup controlfile;
ORA-00279: change 178744591 generated at 07/18/2026 18:55:48 needed for thread
1
ORA-00289: suggestion :
C:\APP\XFF\PRODUCT\11.2.0.1\DBHOME_1\RDBMS\ARC0000006891_1176155303.0001
ORA-00280: change 178744591 for thread 1 is in sequence #6891


Specify log: {&lt;RET&gt;=suggested | filename | AUTO | CANCEL}
H:\BAIDUNETDISK\ORCL\REDO02.LOG
ORA-00339: 归档日志未包含任何重做
ORA-00334: 归档日志: 'H:\BAIDUNETDISK\ORCL\REDO02.LOG'


SQL&gt; E:\APP\ADMINISTRATOR\ORADATA\ORCL\REDO02.LOG
SP2-0734: unknown command beginning &quot;E:\APP\ADM...&quot; - rest of line ignored.
SQL&gt; recover database using backup controlfile;
ORA-00279: change 178744591 generated at 07/18/2026 18:55:48 needed for thread
1
ORA-00289: suggestion :
C:\APP\XFF\PRODUCT\11.2.0.1\DBHOME_1\RDBMS\ARC0000006891_1176155303.0001
ORA-00280: change 178744591 for thread 1 is in sequence #6891


Specify log: {&lt;RET&gt;=suggested | filename | AUTO | CANCEL}
H:\BAIDUNETDISK\ORCL\REDO01.LOG
ORA-00310: 归档日志包含序列 6892; 要求序列 6891
ORA-00334: 归档日志: 'H:\BAIDUNETDISK\ORCL\REDO01.LOG'
</pre>
<pre class="brush: sql; title: ; notranslate">
SQL&gt; recover database using backup controlfile until cancel;
ORA-00279: change 178744591 generated at 07/18/2026 18:55:48 needed for thread
1
ORA-00289: suggestion :
C:\APP\XFF\PRODUCT\11.2.0.1\DBHOME_1\RDBMS\ARC0000006891_1176155303.0001
ORA-00280: change 178744591 for thread 1 is in sequence #6891


Specify log: {&lt;RET&gt;=suggested | filename | AUTO | CANCEL}
cancel
ORA-10879: error signaled in parallel recovery slave
ORA-01547: 警告: RECOVER 成功但 OPEN RESETLOGS 将出现如下错误
ORA-01194: 文件 1 需要更多的恢复来保持一致性
ORA-01110: 数据文件 1: 'H:\BAIDUNETDISK\ORCL\SYSTEM01.DBF'


SQL&gt; alter database open resetlogs;

Database altered.
</pre>
<p>然后使用expdp导出数据,提供dmp文件,完成本次恢复任务</p>
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		<title>深入分析一次ORA-00314错误</title>
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		<pubDate>Sat, 17 May 2014 12:44:33 +0000</pubDate>
		<dc:creator><![CDATA[惜分飞]]></dc:creator>
				<category><![CDATA[Oracle备份恢复]]></category>
		<category><![CDATA[ORA-00314]]></category>
		<category><![CDATA[redo异常]]></category>
		<category><![CDATA[数据库恢复]]></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/2014/05/%e6%b7%b1%e5%85%a5%e5%88%86%e6%9e%90%e4%b8%80%e6%ac%a1ora-00314%e9%94%99%e8%af%af.html" target="_blank">深入分析一次ORA-00314错误</a></p>
<p>作者：<a href="https://www.xifenfei.com" target="_blank">惜分飞</a>©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.]</p>
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<p>运行在win平台上的oracle 10G数据库,因为主机蓝屏,使用pe拷贝出来相关数据库文件,redo文件,控制文件,在恢复数据库过中遇到ORA-00314错误,而无法继续下去<br />
<br />
<strong>恢复报错</strong></p>
<pre class="brush: sql; title: ; notranslate">SQL&gt; recover database
ORA-00283: 恢复会话因错误而取消
ORA-00314: 日志 3 (用于线程 1) 要求的序号 1366 与 1363 不匹配
ORA-00312: 联机日志 3 线程 1:
'DC:\ORADATA\INTERLIB\REDO03.LOG'

00314, 00000, &quot;log %s of thread %s, expected sequence# %s doesn't match %s&quot;
// *Cause:  The online log is corrupted or is an old version.
// *Action: Find and install correct version of log or reset logs.
</pre>
<p>这里提示可以大概看出来,数据库进行恢复的时候,需要sequence 为1366的日志,但是与现在的1363不匹配。通过上面的解释我们很可能知道是redo文件异常或者弄错了redo文件<br />
<br />
<strong>分析<a href="//www.xifenfei.com/5056.html" title="数据库恢复检查脚本(Oracle Database Recovery Check)" target="_blank">Oracle Database Recovery Check</a>结果</strong><br />
控制文件scn相关信息,从这里可以看到数据库的控制文件scn为47714860,checkpoint scn为47711411<br />
<img src="//www.xifenfei.com/wp-content/uploads/2014/05/r1.jpg" alt="r1" width="1239" height="109" class="alignleft size-full wp-image-5327" /><br />
控制文件中关于数据库文件是scn为47711411,而且stop_scn为null<br />
<img src="//www.xifenfei.com/wp-content/uploads/2014/05/r2.jpg" alt="r2" width="1205" height="129" class="alignleft size-full wp-image-5326" /><br />
数据文件头scn是47711411,而且fuzzy为yes<br />
<img src="//www.xifenfei.com/wp-content/uploads/2014/05/r3.jpg" alt="r3" width="1210" height="135" class="alignleft size-full wp-image-5325" /><br />
redo的相关信息,这里我们可以看出当前redo的sequence为1366,first_scn为47711411,redo的写入顺序是redo01->redo02->redo03->redo01<br />
<img src="//www.xifenfei.com/wp-content/uploads/2014/05/r4.jpg" alt="r4" width="1202" height="90" class="alignleft size-full wp-image-5324" /><br />
通过这里整体分析,我们可以知道,数据库为非正常关闭,恢复应该从redo03(sequence 1366)开始进行恢复,但是为什么出现ORA-00314呢？通过dump redo header继续分析<br />
<br />
<strong>dump redo header 分析</strong><br />
这个里面我们可以看到redo01的sequence 为16进制554等于10进制的1364,scn的范围为:0x000002d6e4ab-0x000002d7455b<br />
<img src="//www.xifenfei.com/wp-content/uploads/2014/05/redo1.jpg" alt="redo1" width="807" height="460" class="alignleft size-full wp-image-5330" /></p>
<hr />
这个里面我们可以看到redo02的sequence 为16进制555等于10进制的1365,scn的范围为:0x000002d7455b-0x000002d804b3<br />
<img src="//www.xifenfei.com/wp-content/uploads/2014/05/redo2.jpg" alt="redo2" width="767" height="439" class="alignleft size-full wp-image-5329" /></p>
<hr />
这个属于异常redo,注意第一个seq: 0&#215;00000556等于十进制的1366(也就是表示该redo的sequence为1366),&#8221;Seq# 0000001363,SCN 0x000002d5e1c6-0x000002d6e4ab&#8221;表示在redo的文件头有部分信息记录的为sequence为1633,另外这里表示该文件最大scn为0x000002d6e4ab,和redo01的最小scn(0x000002d6e4ab-0x000002d7455b)/redo01的&#8221;Prev scn: 0&#215;0000.02d5e1c6&#8243;与现在看到的redo03中的最小scn匹配.<br />
<img src="//www.xifenfei.com/wp-content/uploads/2014/05/redo3.jpg" alt="redo3" width="836" height="469" class="alignleft size-full wp-image-5328" /></p>
<hr />
通过这里可以明白,在主机蓝屏的时候由于某种异常,导致redo03中的部分信息修改为了sequence为1366,但是部分信息依然保留它上次的sequence为1363的信息,导致数据库在重新恢复的时候无法正常成功.<br />
<br />
<strong>处理方法</strong><br />
该故障是由于current redo异常导致,根据经验(具体参考:<a href="//www.xifenfei.com/5135.html" title="ORACLE REDO各种异常恢复" target="_blank">ORACLE REDO各种异常恢复</a>),一般使用隐含参数屏蔽前滚,然后强制拉库,绝大部分情况能够拉库成功,如果人品不好可能需要使用其他隐含参数甚至bbed等方式处理</p>
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