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	<title>天道酬勤 &#187; cluster</title>
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	<description>Oracle and My Life</description>
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		<title>CRS、CSS、clusterware的概念</title>
		<link>http://www.ochef.net/2009/11/crs-css-clusterware-the-concept.html</link>
		<comments>http://www.ochef.net/2009/11/crs-css-clusterware-the-concept.html#comments</comments>
		<pubDate>Wed, 11 Nov 2009 11:10:10 +0000</pubDate>
		<dc:creator>ochef</dc:creator>
				<category><![CDATA[Database]]></category>
		<category><![CDATA[cluster]]></category>
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		<guid isPermaLink="false">http://www.ochef.net/?p=674</guid>
		<description><![CDATA[使用Oracle Cluster也有几年了，一直都没有完全弄明白CRS、CSS、clusterware的概念。昨天在一台P550上安装完，还一口气升级到10.2.0.4.0，后来dbca创建库选择ASM存储的时候问题就来了，提示了下面这一段： 根据提示，我执行了这个脚本后又得到了下面这一段： Successfully accumulated necessary OCR keys. Creating OCR keys for user &#8216;root&#8217;, privgrp &#8216;system&#8217;.. Operation successful. Configuration for local CSS has been initialized Adding to inittab Startup will be queued to init within 30 seconds. Checking the status of new Oracle init process&#8230; Expecting the CRS daemons to be up within 600 seconds. [...]<table class="wumii-related-items" cellspacing="0" cellpadding="2" border="0" width="100%" style="clear: both;">
    
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			<content:encoded><![CDATA[<p>使用Oracle Cluster也有几年了，一直都没有完全弄明白CRS、CSS、clusterware的概念。昨天在一台P550上安装完，还一口气升级到10.2.0.4.0，后来dbca创建库选择ASM存储的时候问题就来了，提示了下面这一段：</p>
<p><img class="alignnone size-full wp-image-675" title="css" src="http://www.ochef.net/wp-content/uploads/2009/11/css.jpg" alt="css" width="361" height="179" /></p>
<p>根据提示，我执行了这个脚本后又得到了下面这一段：</p>
<p>Successfully accumulated necessary OCR keys.</p>
<p>Creating OCR keys for user &#8216;root&#8217;, privgrp &#8216;system&#8217;..</p>
<p>Operation successful.</p>
<p>Configuration for local CSS has been initialized</p>
<p>Adding to inittab</p>
<p>Startup will be queued to init within 30 seconds.</p>
<p>Checking the status of new Oracle init process&#8230;</p>
<p>Expecting the CRS daemons to be up within 600 seconds.</p>
<p>Giving up: Oracle CSS stack appears NOT to be running.</p>
<p>Oracle CSS service would not start as installed</p>
<p>Automatic Storage Management(ASM) cannot be used until Oracle CSS service is started</p>
<p>正在此时，<a href="http://www.rickyzhu.com" target="_blank">rickyzhu</a>在MSN上线了，请教。当时可能没有表达清楚，错误的让他理解成了我要做<span style="color: #ff0000;">SIHA</span>，而实际上我仅仅是想：<span style="color: #ff0000;">在一台AIX P550上安装10g，选用ASM存储</span></p>
<p>太多的困惑让我一定要搞定它们，以下内容参考互联网前辈文章之后的总结：</p>
<p>1. Clusterware与CRS再与CSS的关系</p>
<p>从10.1的RAC开始，Oracle 开始捆绑其自身的集群软件，不再需要像HP的Service Guard、IBM的HACMP等这些第三方的集群软件，被称为 Oracle Cluster Ready Services，简称<span style="color: #ff0000;">CRS</span>。</p>
<p>从10gR2到现在的11g，Oracle将其更名为Clusterware（集群件），通常意义上我们认为CRS = Clusterware = Oracle Cluster Ready Services = Oracle Cluster Software。确切的说CRS是Oracle cluster software中的<span style="color: #ff0000;">一个组件</span>，Oracle Cluster software还有其它组件，如Cluster Synchronization Services (CSS)、Event Management (EVM)。</p>
<p>CSS 可管理 Oracle 群集成员并将其自身的组成员服务提供给 RAC 实例。当RAC 群集上安装了 CSS 时，CSS 就可以利用RAC 提供的组成员服务。CRS 根据配置管理 Oracle 的群集资源，包括资源的启动、停止、监视和故障切换。</p>
<p>EVM 发布由 CRS 生成的事件，并且当特定事件发生时，可运行脚本。</p>
<p>Oracle 10g RAC 将下列两个子网用于群集通信目的：</p>
<p>•    CSS 心跳线网络 (CSS-HB)：运行在不同群集节点上的 Oracle Clusterware 利用该网络进行相互通信。</p>
<p>•     RAC 群集互连网络 (RAC-IC)：数据库的各个实例利用该网络进行相互通信。</p>
<p>与RAC和CRS相关的知识点还可以参考：</p>
<p><a href="http://www.eygle.com" target="_blank">EYGLE</a>:</p>
<p>1. <a href="http://www.eygle.com/archives/2005/10/oracle10g_new_feature_crs.html" target="_blank">Oracle10g New Feature:CRS(Cluster Ready Services)</a></p>
<p>2. <a href="http://www.eygle.com/archives/2008/06/10g_rac_concepts.html" target="_blank">Oracle 10g RAC的相关概念</a></p>
<p><a href="http://www.oracleblog.cn" target="_blank">小荷</a>：</p>
<p>1. <a href="http://www.oracleblog.cn/working-case/protecting-single-instance-using-oracle-crs/" target="_blank">用crs实现single instance的HA</a></p>
<p>2. <a href="http://www.oracleblog.cn/study-note/rac-one-node/?m=20091029" target="_blank">RAC ONE NODE</a></p>
<p>文章开始部分说到的问题，请参考后续文章<a title="reconfigure css on non-rac" href="http://www.ochef.net/2009/11/configure-the-css-on-non-rac-trace-it-linuxunix/" target="_blank">Configure the CSS on Non-RAC &amp; Trace It (Linux/Unix)</a></p>
<p>-The End-</p>
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