Use this page to generate various Java dumps and cores from within the administrative
console.
To view this administrative 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. You can analyze dumps and cores
using problem determination tools available for the IBM® Support Assistant.
Supported configurations: Generating a heap dump or a system dump is
not supported for a non-IBM Java virtual
machine (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: oror
sptcfg
- Heap dump
- A heap dump is a snapshot of JVM memory. It shows live objects
in the memory and references between them.
- You 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.