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	<title>《修改dataguard主库redo组数和大小》的评论</title>
	<atom:link href="https://www.xifenfei.com/2013/05/%e4%bf%ae%e6%94%b9dataguard%e4%b8%bb%e5%ba%93redo%e7%bb%84%e6%95%b0%e5%92%8c%e5%a4%a7%e5%b0%8f.html/feed" rel="self" type="application/rss+xml" />
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	<description>提供7*24专业数据库(Oracle,SQL Server,MySQL,PostgreSQL等)恢复和技术支持@Tel:17813235971</description>
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	<item>
		<title>作者：惜分飞</title>
		<link>https://www.xifenfei.com/2013/05/%e4%bf%ae%e6%94%b9dataguard%e4%b8%bb%e5%ba%93redo%e7%bb%84%e6%95%b0%e5%92%8c%e5%a4%a7%e5%b0%8f.html/comment-page-2#comment-4224</link>
		<dc:creator><![CDATA[惜分飞]]></dc:creator>
		<pubDate>Sat, 07 Nov 2015 02:33:56 +0000</pubDate>
		<guid isPermaLink="false">https://www.xifenfei.com/?p=4388#comment-4224</guid>
		<description><![CDATA[都是asm，你可以不用写，因为omf方式管理，你直接指定log和db默认磁盘组就可以了
&lt;blockquote cite=&quot;comment-4222&quot;&gt;


您好，这边咨询一件事情
alter system set log_file_name_convert=\’+DATANEW/rrswldbdg/\’,\’+DATANEW/rrswldb/\’ scope=spfile;
alter system set db_file_name_convert=\’+DATANEW/rrswldbdg/\’,\’+DATANEW/rrswldb/\’ scope=spfile;
最后我多加了一个/ 发现现在数据文件主备库能自动创建而LOGFILE就不行了


&lt;/blockquote&gt;]]></description>
		<content:encoded><![CDATA[<p>都是asm，你可以不用写，因为omf方式管理，你直接指定log和db默认磁盘组就可以了</p>
<blockquote cite="comment-4222">
<p>您好，这边咨询一件事情<br />
alter system set log_file_name_convert=\’+DATANEW/rrswldbdg/\’,\’+DATANEW/rrswldb/\’ scope=spfile;<br />
alter system set db_file_name_convert=\’+DATANEW/rrswldbdg/\’,\’+DATANEW/rrswldb/\’ scope=spfile;<br />
最后我多加了一个/ 发现现在数据文件主备库能自动创建而LOGFILE就不行了</p>
</blockquote>
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	</item>
	<item>
		<title>作者：chengyu yang</title>
		<link>https://www.xifenfei.com/2013/05/%e4%bf%ae%e6%94%b9dataguard%e4%b8%bb%e5%ba%93redo%e7%bb%84%e6%95%b0%e5%92%8c%e5%a4%a7%e5%b0%8f.html/comment-page-2#comment-4222</link>
		<dc:creator><![CDATA[chengyu yang]]></dc:creator>
		<pubDate>Wed, 04 Nov 2015 08:18:55 +0000</pubDate>
		<guid isPermaLink="false">https://www.xifenfei.com/?p=4388#comment-4222</guid>
		<description><![CDATA[您好，这边咨询一件事情
alter system set log_file_name_convert=\&#039;+DATANEW/rrswldbdg/\&#039;,\&#039;+DATANEW/rrswldb/\&#039; scope=spfile;
alter system set db_file_name_convert=\&#039;+DATANEW/rrswldbdg/\&#039;,\&#039;+DATANEW/rrswldb/\&#039; scope=spfile; 
最后我多加了一个/ 发现现在数据文件主备库能自动创建而LOGFILE就不行了]]></description>
		<content:encoded><![CDATA[<p>您好，这边咨询一件事情<br />
alter system set log_file_name_convert=\&#8217;+DATANEW/rrswldbdg/\&#8217;,\&#8217;+DATANEW/rrswldb/\&#8217; scope=spfile;<br />
alter system set db_file_name_convert=\&#8217;+DATANEW/rrswldbdg/\&#8217;,\&#8217;+DATANEW/rrswldb/\&#8217; scope=spfile;<br />
最后我多加了一个/ 发现现在数据文件主备库能自动创建而LOGFILE就不行了</p>
]]></content:encoded>
	</item>
	<item>
		<title>作者：惜分飞</title>
		<link>https://www.xifenfei.com/2013/05/%e4%bf%ae%e6%94%b9dataguard%e4%b8%bb%e5%ba%93redo%e7%bb%84%e6%95%b0%e5%92%8c%e5%a4%a7%e5%b0%8f.html/comment-page-2#comment-3919</link>
		<dc:creator><![CDATA[惜分飞]]></dc:creator>
		<pubDate>Sat, 19 Apr 2014 18:12:20 +0000</pubDate>
		<guid isPermaLink="false">https://www.xifenfei.com/?p=4388#comment-3919</guid>
		<description><![CDATA[确保在任何情况下，都有足够的standby redo log来写对应的redo数据。
如果standby redo log和redo log相等,那可能在redo切换的时候，standby redo没有及时写，从而出现异常]]></description>
		<content:encoded><![CDATA[<p>确保在任何情况下，都有足够的standby redo log来写对应的redo数据。<br />
如果standby redo log和redo log相等,那可能在redo切换的时候，standby redo没有及时写，从而出现异常</p>
]]></content:encoded>
	</item>
	<item>
		<title>作者：lory</title>
		<link>https://www.xifenfei.com/2013/05/%e4%bf%ae%e6%94%b9dataguard%e4%b8%bb%e5%ba%93redo%e7%bb%84%e6%95%b0%e5%92%8c%e5%a4%a7%e5%b0%8f.html/comment-page-2#comment-3918</link>
		<dc:creator><![CDATA[lory]]></dc:creator>
		<pubDate>Tue, 15 Apr 2014 13:22:50 +0000</pubDate>
		<guid isPermaLink="false">https://www.xifenfei.com/?p=4388#comment-3918</guid>
		<description><![CDATA[飞总，请教一个问题，number of standby redo log file groups 就这个为啥一定要比主库的redo log group数目要多呢]]></description>
		<content:encoded><![CDATA[<p>飞总，请教一个问题，number of standby redo log file groups 就这个为啥一定要比主库的redo log group数目要多呢</p>
]]></content:encoded>
	</item>
	<item>
		<title>作者：惜分飞</title>
		<link>https://www.xifenfei.com/2013/05/%e4%bf%ae%e6%94%b9dataguard%e4%b8%bb%e5%ba%93redo%e7%bb%84%e6%95%b0%e5%92%8c%e5%a4%a7%e5%b0%8f.html/comment-page-2#comment-3908</link>
		<dc:creator><![CDATA[惜分飞]]></dc:creator>
		<pubDate>Mon, 24 Mar 2014 03:42:23 +0000</pubDate>
		<guid isPermaLink="false">https://www.xifenfei.com/?p=4388#comment-3908</guid>
		<description><![CDATA[&lt;blockquote cite=&quot;comment-3903&quot;&gt;

standby_file_management&lt;/blockquote&gt;

standby_file_management 管理的是文件级别的，对于你对数据库非关于数据文件，redo文件的操作语句，不会有影响。也就是说，一般的dml，ddl是没有影响的]]></description>
		<content:encoded><![CDATA[<blockquote cite="comment-3903">
<p>standby_file_management</p></blockquote>
<p>standby_file_management 管理的是文件级别的，对于你对数据库非关于数据文件，redo文件的操作语句，不会有影响。也就是说，一般的dml，ddl是没有影响的</p>
]]></content:encoded>
	</item>
	<item>
		<title>作者：惜分飞</title>
		<link>https://www.xifenfei.com/2013/05/%e4%bf%ae%e6%94%b9dataguard%e4%b8%bb%e5%ba%93redo%e7%bb%84%e6%95%b0%e5%92%8c%e5%a4%a7%e5%b0%8f.html/comment-page-1#comment-3907</link>
		<dc:creator><![CDATA[惜分飞]]></dc:creator>
		<pubDate>Mon, 24 Mar 2014 03:40:41 +0000</pubDate>
		<guid isPermaLink="false">https://www.xifenfei.com/?p=4388#comment-3907</guid>
		<description><![CDATA[&lt;blockquote cite=&quot;comment-3904&quot;&gt;


&lt;strong&gt;&lt;a href=&quot;#comment-3903&quot; rel=&quot;nofollow&quot;&gt;Johnny&lt;/a&gt;&lt;/strong&gt;,
我这边的库没有standby redo log


&lt;/blockquote&gt;
没有使用standby redo log，那你们可能就是使用的是archivelog模式，这个可能导致主备库延迟时间比较长，切换日志后才会同步到备库]]></description>
		<content:encoded><![CDATA[<blockquote cite="comment-3904">
<p><strong><a href="#comment-3903" rel="nofollow">Johnny</a></strong>,<br />
我这边的库没有standby redo log</p>
</blockquote>
<p>没有使用standby redo log，那你们可能就是使用的是archivelog模式，这个可能导致主备库延迟时间比较长，切换日志后才会同步到备库</p>
]]></content:encoded>
	</item>
	<item>
		<title>作者：Johnny</title>
		<link>https://www.xifenfei.com/2013/05/%e4%bf%ae%e6%94%b9dataguard%e4%b8%bb%e5%ba%93redo%e7%bb%84%e6%95%b0%e5%92%8c%e5%a4%a7%e5%b0%8f.html/comment-page-1#comment-3904</link>
		<dc:creator><![CDATA[Johnny]]></dc:creator>
		<pubDate>Fri, 21 Mar 2014 07:00:04 +0000</pubDate>
		<guid isPermaLink="false">https://www.xifenfei.com/?p=4388#comment-3904</guid>
		<description><![CDATA[&lt;strong&gt;&lt;a href=&quot;#comment-3903&quot; rel=&quot;nofollow&quot;&gt;Johnny&lt;/a&gt;&lt;/strong&gt;, 
我这边的库没有standby redo log]]></description>
		<content:encoded><![CDATA[<p><strong><a href="#comment-3903" rel="nofollow">Johnny</a></strong>,<br />
我这边的库没有standby redo log</p>
]]></content:encoded>
	</item>
	<item>
		<title>作者：Johnny</title>
		<link>https://www.xifenfei.com/2013/05/%e4%bf%ae%e6%94%b9dataguard%e4%b8%bb%e5%ba%93redo%e7%bb%84%e6%95%b0%e5%92%8c%e5%a4%a7%e5%b0%8f.html/comment-page-1#comment-3903</link>
		<dc:creator><![CDATA[Johnny]]></dc:creator>
		<pubDate>Fri, 21 Mar 2014 06:14:08 +0000</pubDate>
		<guid isPermaLink="false">https://www.xifenfei.com/?p=4388#comment-3903</guid>
		<description><![CDATA[&lt;strong&gt;&lt;a href=&quot;#comment-1477&quot; rel=&quot;nofollow&quot;&gt;&#24796;&#20998;&#39134;&lt;/a&gt;&lt;/strong&gt;, 
飞总，您好，设置standby_file_management参数后，只会影响主机新建数据文件的同步吗，是否会对主机现有表数据的同步造成影响，如果修改容灾时，主机表内有update操作，该部分是否不受之前参数的影响，谢谢指教]]></description>
		<content:encoded><![CDATA[<p><strong><a href="#comment-1477" rel="nofollow">&#24796;&#20998;&#39134;</a></strong>,<br />
飞总，您好，设置standby_file_management参数后，只会影响主机新建数据文件的同步吗，是否会对主机现有表数据的同步造成影响，如果修改容灾时，主机表内有update操作，该部分是否不受之前参数的影响，谢谢指教</p>
]]></content:encoded>
	</item>
	<item>
		<title>作者：惜分飞</title>
		<link>https://www.xifenfei.com/2013/05/%e4%bf%ae%e6%94%b9dataguard%e4%b8%bb%e5%ba%93redo%e7%bb%84%e6%95%b0%e5%92%8c%e5%a4%a7%e5%b0%8f.html/comment-page-1#comment-1478</link>
		<dc:creator><![CDATA[惜分飞]]></dc:creator>
		<pubDate>Tue, 14 May 2013 12:28:44 +0000</pubDate>
		<guid isPermaLink="false">https://www.xifenfei.com/?p=4388#comment-1478</guid>
		<description><![CDATA[查询standby redo log相关视图
[sql]
SQL&gt; select group# from v$log;

    GROUP#
----------
         1
         3
         2

SQL&gt; select group# from v$standby_log;

    GROUP#
----------
         4
         5
         6
         7


SQL&gt;  select member from v$logfile;

MEMBER
----------------------------------------------------------
/data/oradata/wasudb/redo03.log
/data/oradata/wasudb/redo02.log
/data/oradata/wasudb/redo01.log
/data/oradata/wasudb/st_redo04.log
/data/oradata/wasudb/st_redo05.log
/data/oradata/wasudb/st_redo06.log
/data/oradata/wasudb/st_redo07.log
[/sql]]]></description>
		<content:encoded><![CDATA[<p>查询standby redo log相关视图</p>
<pre class="brush: sql; title: ; notranslate">
SQL&gt; select group# from v$log;

    GROUP#
----------
         1
         3
         2

SQL&gt; select group# from v$standby_log;

    GROUP#
----------
         4
         5
         6
         7


SQL&gt;  select member from v$logfile;

MEMBER
----------------------------------------------------------
/data/oradata/wasudb/redo03.log
/data/oradata/wasudb/redo02.log
/data/oradata/wasudb/redo01.log
/data/oradata/wasudb/st_redo04.log
/data/oradata/wasudb/st_redo05.log
/data/oradata/wasudb/st_redo06.log
/data/oradata/wasudb/st_redo07.log
</pre>
]]></content:encoded>
	</item>
	<item>
		<title>作者：惜分飞</title>
		<link>https://www.xifenfei.com/2013/05/%e4%bf%ae%e6%94%b9dataguard%e4%b8%bb%e5%ba%93redo%e7%bb%84%e6%95%b0%e5%92%8c%e5%a4%a7%e5%b0%8f.html/comment-page-1#comment-1477</link>
		<dc:creator><![CDATA[惜分飞]]></dc:creator>
		<pubDate>Tue, 14 May 2013 12:27:22 +0000</pubDate>
		<guid isPermaLink="false">https://www.xifenfei.com/?p=4388#comment-1477</guid>
		<description><![CDATA[如果不配置log_file_name_convert,启动MRP进程时出现如下警告
[shell]
Tue May 14 11:20:21 GMT+08:00 2013alter database recover managed standby database using current logfile disconnect from session
Tue May 14 11:20:21 GMT+08:00 2013Attempt to start background Managed Standby Recovery process (wasudb)
MRP0 started with pid=19, OS id=9633806
Tue May 14 11:20:21 GMT+08:00 2013MRP0: Background Managed Standby Recovery process started (wasudb)
Managed Standby Recovery starting Real Time Apply
 parallel recovery started with 7 processes
Media Recovery start incarnation depth : 1, target inc# : 3, irscn : 31233229749
Tue May 14 11:20:27 GMT+08:00 2013Waiting for all non-current ORLs to be archived...
Clearing online redo logfile 1 /data/oradata/wasudb/redo01.log
Clearing online log 1 of thread 1 sequence number 37168
Tue May 14 11:20:27 GMT+08:00 2013Errors in file /oracle/admin/wasudb/bdump/wasudb_mrp0_9633806.trc:
ORA-19527: physical standby redo log must be renamed
ORA-00312: online log 1 thread 1: &#039;/data/oradata/wasudb/redo01.log&#039;
Clearing online redo logfile 1 complete
Media Recovery Waiting for thread 1 sequence 37174 (in transit)
Tue May 14 11:20:27 GMT+08:00 2013Recovery of Online Redo Log: Thread 1 Group 9 Seq 37174 Reading mem 0
  Mem# 0: /data/oradata/wasudb/st_redo09.log
Tue May 14 11:20:27 GMT+08:00 2013Completed: alter database recover managed standby database using current logfile disconnect from session
[/shell]]]></description>
		<content:encoded><![CDATA[<p>如果不配置log_file_name_convert,启动MRP进程时出现如下警告</p>
<pre class="brush: bash; title: ; notranslate">
Tue May 14 11:20:21 GMT+08:00 2013alter database recover managed standby database using current logfile disconnect from session
Tue May 14 11:20:21 GMT+08:00 2013Attempt to start background Managed Standby Recovery process (wasudb)
MRP0 started with pid=19, OS id=9633806
Tue May 14 11:20:21 GMT+08:00 2013MRP0: Background Managed Standby Recovery process started (wasudb)
Managed Standby Recovery starting Real Time Apply
 parallel recovery started with 7 processes
Media Recovery start incarnation depth : 1, target inc# : 3, irscn : 31233229749
Tue May 14 11:20:27 GMT+08:00 2013Waiting for all non-current ORLs to be archived...
Clearing online redo logfile 1 /data/oradata/wasudb/redo01.log
Clearing online log 1 of thread 1 sequence number 37168
Tue May 14 11:20:27 GMT+08:00 2013Errors in file /oracle/admin/wasudb/bdump/wasudb_mrp0_9633806.trc:
ORA-19527: physical standby redo log must be renamed
ORA-00312: online log 1 thread 1: '/data/oradata/wasudb/redo01.log'
Clearing online redo logfile 1 complete
Media Recovery Waiting for thread 1 sequence 37174 (in transit)
Tue May 14 11:20:27 GMT+08:00 2013Recovery of Online Redo Log: Thread 1 Group 9 Seq 37174 Reading mem 0
  Mem# 0: /data/oradata/wasudb/st_redo09.log
Tue May 14 11:20:27 GMT+08:00 2013Completed: alter database recover managed standby database using current logfile disconnect from session
</pre>
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