Collecting Java dumps and core files using the administrative console
You can use the Java™ runtime environment to create dump and core files to help with troubleshooting. You can use the administrative console to trigger the creation of these dumps and core files.
About this task
The Java virtual machine (JVM) is capable of producing Java dump and core files to aid in troubleshooting. You can use heap dump and system dump files to help you diagnose memory-related problems, such as memory leaks. You can use Java core files to help you diagnose problems where the CPU is persistently 100% busy, when threads are hanging, or where threads are in a deadlock.
Avoid trouble: The process
of generating dump and core files can have a noticeable performance
impact on your system that can last for many seconds or minutes. If
necessary, use your test and development environments to better understand
the impact of generating dump and core files.
Supported configurations: Generating a heap dump or a system dump is
not supported for a non-IBM JVM. If you attempt to generate a heap dump or a system dump using the
administrative console against a non-IBM JVM, the following message is displayed in the
administrative console:
The Heap dump request to the server <server_name> failed because of the following reason:
Could not take single dump as Sun Microsystems Inc. is not supported.
orThe System dump request to the server <server_name> failed because of the following reason:
Could not take single dump as Sun Microsystems Inc. is not supported.
The Heap dump request to the server <server_name> failed because of the following reason:
Could not take single dump as HP-UX is not supported.
orThe System dump request to the server <server_name> failed because of the following reason:
Could not take single dump as HP-UX is not supported.
Procedure
- In the navigation pane, click Troubleshooting > Java dumps and cores.
- Select the server or servers you need to collect a dump or core from.
- Click System Dump or Java Core or Heap Dump depending on your need.