Troubleshooting a Sametime Meeting Server using JVM logs
To start troubleshooting a problem on an IBM® Sametime® meeting server, check the JVM log files first. These log files collect output for the System.out and System.err output streams for the application server process. One log file is specified for the SystemOut.log output stream and one file specified for the SystemErr.log output stream.
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An application can write print data to the JVM logs either
directly in the form of System.out.print() or System.err.print() method
calls or by calling a JVM function, such as Exception.printStackTrace().
In addition, the System.out JVM log contains system message events
written by the WebSphere® Application
Server. In the case of a IBM WebSphere Application Server
Network Deployment configuration, JVM logs are also created for the
deployment manager and each node manager, since they also represent
JVMs.
- SystemOut.log is more useful monitoring the health of the running application server but can help in determining a problem, although it's better to use the IBM Service log and the advanced capabilities of the Log Analyzer to determine a problem.
- SystemErr.log contains exception stack trace information that is useful when performing problem analysis.
The JVM log files are self-managing to the extent that they can be configured not to grow beyond a certain size. Also, you can set how many historical, or archived, files to keep and which of the log files to rollover or archive based by time or size or both.