Diagnosis steps
- 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).
- Note the name of the dump file produced - file1.
- 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.
- Optionally transmit file2 to another machine for analysis. Note that file2 is in binary format and transmission
in ASCII mode will corrupt the data.
- 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.
- Click "Launch" to launch the Dump Analyzer.
- Enter the name of the file produced by jextract - file2.
- Enter further analysis options if required.
- Click "Analyze" to start the analysis of the dump.
- The result will be a summary of the analysis and ideally some localization of the problem and suggestions
for further analysis or resolution.