91 lines
4.1 KiB
HTML
91 lines
4.1 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<META http-equiv="Content-Type" content="text/html; charset=utf-8">
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<LINK rel="stylesheet" type="text/css" href="../../../rzahg/ic.css">
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<title>Administer Java virtual machine settings</title>
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</head>
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<BODY>
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<!-- Java sync-link -->
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<SCRIPT LANGUAGE="Javascript" SRC="../../../rzahg/synch.js" TYPE="text/javascript"></SCRIPT>
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<h4><a name="appsvrjvm"></a>Administer Java virtual machine settings</h4>
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<p>The Java virtual machine settings for your application server specify Java virtual machine system properties that your applications use.</p>
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<p>You can use the administrative console and wsadmin to configure Java virtual machine settings.</p>
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<ul>
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<li><a href="#acjvm">Use the administrative console to administer Java virtual machine settings</a></li>
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<li><a href="#wsajvm">Use wsadmin to administer Java virtual machine settings</a></li>
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</ul>
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<p><strong><a name="acjvm">Use the administrative console to administer Java virtual machine settings</a></strong></p>
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<p>To administer Java virtual machine settings with the administrative console, follow these steps:</p>
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<ol>
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<li><a href="acstart.htm">Start the administrative console</a>.</li>
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<li>Expand <strong>Servers</strong> and click <strong>Application Servers</strong>.</li>
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<li>Click the name of your application server.</li>
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<li>On the application server's page, click <strong>Process Definition</strong>.</li>
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<li>On the Process Definition page, click <strong>Java Virtual Machine</strong>.</li>
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<li>Configure settings for the Java virtual machine.</li>
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<li>Click <strong>Apply</strong> or <strong>OK</strong>.</li>
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<li><a href="acsave.htm">Save the application server configuration</a>.</li>
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</ol>
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<p><strong><a name="wsajvm">Use wsadmin to administer Java virtual machine settings</a></strong></p>
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<p>To administer Java virtual machine settings with wsadmin, follow these steps:</p>
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<ol>
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<li><p>On the CL command line, run the STRQSH (Start Qshell) command.</p></li>
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<li><p>Run the cd command to change to the directory that contains the wsadmin tool:</p>
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<pre>cd /QIBM/ProdData/WebASE/ASE5/bin</pre></li>
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<li><p><a href="wsarun.htm#start">Start wsadmin</a>.</p></li>
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<li><p>At the wsadmin prompt, run this command to identify the application server and assign it to the server variable:</p>
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<pre>set server [$AdminConfig getid
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/Cell:<em>myCell</em>/Node:<em>myNode</em>/Server:<em>myAppSvr</em>/]</pre>
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<p>where <em>myCell</em> is the name of the cell that contains your application server, <em>myNode</em> is the name of the node that contains your application server, and <em>myAppSvr</em> is the name of your application server.</p>
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<p><strong>Note:</strong> This command has been wrapped for display purposes.</p></li>
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<li><p>Run this command to identify the Java virtual machine for your application server and assign it to the jvm variable:</p>
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<pre>set jvm [$AdminConfig list JavaVirtualMachine $server]</pre></li>
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<li><p>Use the attributes command to display a list of the attributes that you can set for the Java virtual machine:</p>
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<pre>$AdminConfig attributes JavaVirtualMachine</pre>
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<p>The command displays this output:</p>
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<pre>"bootClasspath String*"
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"classpath String*"
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"debugArgs String"
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"debugMode Boolean"
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"disableJIT Boolean"
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"executableJarFileName String"
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"genericJvmArguments String"
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"hprofArguments String"
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"initialHeapSize Integer"
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"maximumHeapSize Integer"
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"osName String"
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"runHProf Boolean"
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"systemProperties Property(TypedProperty)*"
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"verboseModeClass Boolean"
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"verboseModeGarbageCollection Boolean"
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"verboseModeJNI Boolean"</pre></li>
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<li><p>Modify the Java virtual machine attributes. For example, to turn on debugging, run this command:</p>
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<pre>$AdminConfig modify $jvm {{debugMode true} {debugArgs "-Djava.compiler=NONE
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-Xdebug -Xnoagent -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=7777"}}</pre></li>
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<li><p>Run this command to save your changes:</p>
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<pre>$AdminConfig save</pre></li>
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</ol>
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</body>
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</html>
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