Diagnosis steps

  1. Produce a dump from the Java™ VM. This will normally happen automatically in the case of some failures or can be triggered programmatically or on user request (by a signal or other means depending on the platform).
  2. Note the name of the dump file produced - file1.
  3. Run the jextract program on that dump (file1). This step must be performed on the machine where the dump was produced and be run using the VM that produced the dump. It will produce a new file - file2.
  4. Optionally transmit file2 to another machine for analysis. Note that file2 is in binary format and transmission in ASCII mode will corrupt the data.
  5. Start ISA on the analysis machine and select DumpAnalyzer from the tools menu on the Analyze Problem activity. Note that this assumes that you have installed (in ISA) a product such as IBM® Developer Kit for Java 5.0 or the WebSphere Application Server 6.0 (which uses a Java™ VM) and also installed the IBM® Monitoring and Diagnostic Tools for Java™ - Dump Analyzer.
  6. Click "Launch" to launch the Dump Analyzer.
  7. Enter the name of the file produced by jextract - file2.
  8. Enter further analysis options if required.
  9. Click "Analyze" to start the analysis of the dump.
  10. The result will be a summary of the analysis and ideally some localization of the problem and suggestions for further analysis or resolution.

© Copyright IBM Corp. 2007, 2008 All Rights Reserved. US Government Users Restricted Rights - Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp.