56 lines
2.6 KiB
HTML
56 lines
2.6 KiB
HTML
<!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>Java virtual machine log files</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="trbjvmintro"></a>Java virtual machine log files</h4>
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<p>The Java virtual machine (JVM) log files contain the output for the System.out
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and System.err output streams for the application server process. One log file
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is created for the System.out output stream and another for the System.err
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output stream. The JVM logs contain print data written by applications. The
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data may be written directly by the application in the form of System.out.println(),
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System.err.print(), or other method calls. Data may also be written indirectly
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by the application calling a JVM function, such as Exception.printStackTrace().
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In addition, the System.out JVM log contains system messages, also known as
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message events, written by the application server.</p>
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<p>The JVM log files are self-managing. The maximum file size and the number
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of log files to archive and when to archive log files are user defined.</p>
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<p>The log files must have the following granted authorities:</p>
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<ul>
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<li>*Public *Exclude</li>
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<li>QEJBSVR *RW</li>
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</ul>
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<p>If the application server is running under a user profile other than the default
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(QEJBSVR) and the user profile does not have QEJBSVR specified as a group profile,
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the user profile must have explicit *RW authority to the JVM log file.</p>
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<p>Application print data may be formatted with the JVM to display as a WebSphere
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system message or as plain text. WebSphere Application Server system messages are always preformatted.</p>
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<p>See these topics for information on how to use the JVM log files:</p>
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<ul>
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<li>
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<p><a href="trbjvmconfig.htm"><strong>Configure the Java virtual machine
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log files</strong></a> <br>
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Learn how to configure the JVM log files for your application server through
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the administrative console .</p>
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</li>
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<li>
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<p><strong><a href="trbvmview.htm">View the Java virtual machine log files</a></strong> <br>
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Learn how to view the JVM log files through the administrative console
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and other methods.</p>
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</li>
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<li>
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<p><a href="trbjvminterp.htm"><strong>Interpret the contents for the Java
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virtual machine log files</strong></a> <br>
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Learn about the formatting of the information contained in the log files.</p>
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</li>
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</ul>
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<p> </p>
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</body>
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</html>
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