WAS v8.5 > Reference > Log and trace file descriptions
Java dump and core page
Use this page to generate various Java dumps and cores from within the dmgr console.
To view this dmgr console page, click Troubleshooting > Java dumps and cores.
Select one or more of the listed servers, and click one of the following buttons to generate dumps. We can analyze dumps and cores using problem determination tools available for the IBM Support Assistant.
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 dmgr console against a non-IBM JVM, the following message is displayed in the dmgr 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.or
The 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.or
The 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.sptcfg
- Heap dump
- A heap dump is a snapshot of JVM memory. It shows live objects in the memory and references between them.
- We can use this option to debug conditions such as memory leaks, heap fragmentation or to investigate what objects are consuming the largest part of the memory.
- Java core
- Use this button to investigate why a server is hanging or investigate messages in the logs that indicate a thread has not completed its work in the expected amount of time.
- System dump
- Use this button to generate system native dumps of the server process. These dumps can be quite large.
Related
Collect Java dumps and core files
Use IBM Support Assistant