Information Gathering › Run the Logging Script › Debug CA Chorus Application Server Problems › JVM Dumps › Reading a javacore File

Reading a javacore File

If you edit or browse the javacore file, you see some useful information about the CA Chorus Application Server at the time of the failure. Also, the IBM Thread and the Monitor Dump Analyzer for the Java tool reads the file and provides more information.

The following procedure explains how to use the javacore analysis tool.

Follow these steps:

1. Download the IBM Thread and Monitor Dump Analyzer for Java from the IBM website.

   Note: You download a zip file named jcannn.zip, where nnn is the version number.

2. Unzip the downloaded file to a directory.
3. Execute the following command from the directory where you unzipped the downloaded file:

   "java -jar jcannn.jar"
   

   A GUI opens on your desktop.

4. Select File, Open Thread Dumps.
5. Locate the javacore file and click Open.

   A loading status appears. A thread dump list that shows every javacore file that you have opened appears.

6. Double-click the entry for the dump that you just opened.

   A summary of the information in the javacore appears. The summary includes date/time, system information, JVM information, environment information (including JVM arguments), memory statistics, and other information.

   Note: You can see more information available under Analysis on the menu bar.