Logging java outofmemoryerror stacktrace console output

Question

I've encountered OutOfMemoryError in my JAVA program. It is OK that OutOfMemoryError happened, but I'd like to log it when it happens. I have used -XX:OnOutOfMemoryError options to detect that it happened, but it doesn't log stacktrace information which is printed to console. I tried to use redirection to log this console output, but 2>&1, 2>, and all other options failed log this output and it just printed to console. Is there any way to log this stacktrace information? I've been googling and searching in stackoverflow.com but couldn't find answer. Please advice.

Heap Dump is not my option, either. I don't have so much space so can't risk such huge file :'( I just need to log stacktrace information.

Thank you!

possible duplicate of [Using HeapDumpOnOutOfMemoryError parameter for heap dump for JBoss](http://stackoverflow.com/questions/542979/using-heapdumponoutofmemoryerror-parameter-for-heap-dump-for-jboss) — Mick Mnemonic, Sep 21 '15 at 23:54
@MickMnemonic thanks for answering. I've forgot to mention but HeapDump is not my option, either. :) — Daniel Kim, Sep 21 '15 at 23:55
Analysing the stack trace only may not tell you the actual _cause_ of the OOME (only the last failed allocation). Can you profile your application with e.g. [VisualVM](https://visualvm.java.net/)? — Mick Mnemonic, Sep 22 '15 at 00:03
@MickMnemonic I don't know about VisualVM but will try to find out. Thanks! — Daniel Kim, Sep 22 '15 at 00:04

Petro Semeniuk · Answer 1 · 2015-09-26T23:07:39.800

6

Option 1: You could use OnOutOfMemoryError hook combined with jstack to get stacktrace of your process:

"-XX:OnOutOfMemoryError=jstack -l %p"

note: on production you most likely will have separate shell script for that to avoid problem with jstack coming from different java versions.

Option 2: You could use setUncaughtExceptionHandler to catch all exception and check for OutOfMemoryError specifically:

Thread.currentThread().setUncaughtExceptionHandler(new UncaughtExceptionHandler() {

        @Override
        public void uncaughtException(Thread thread, Throwable ex) {
...

edited Sep 26 '15 at 23:07

answered Sep 22 '15 at 01:55

Petro Semeniuk

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Wow, that's really helpful. I'll definitely try this. Thanks! – Daniel Kim Sep 22 '15 at 02:01

Logging java outofmemoryerror stacktrace console output

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