-XX:+HeapDumpOnCtrlBreak couldn't create jvm?

Question

When I add to the jvm parameters following one

-XX:+HeapDumpOnCtrlBreak

I'm getting an error that JVM couldn't be started.

Could not create Java virtual machine

Java version I'm using is 1.6.0_21.

What I'm doing wrong? Do I need to set up any others parameters?

This usually means that the heap size was too small, or there wasn't enough resources. It could also be a bug. I would try update 45 which has many bug fixed compared with update 21 — Peter Lawrey, Jul 30 '13 at 06:46
According to this link http://docs.oracle.com/cd/E15289_01/doc.40/e15062/optionxx.htm the -XX options apply only to the Oracle JRockit JVM ... and indeed on my JVM it says unrecognized option ... — Gregor Ophey, Jul 30 '13 at 06:46

score 3 · Accepted Answer · edited May 23 '17 at 10:31

3

i think it is not supported by JDK 1.6 , did you try with JDK 1.5.

For more you can refer this question.

You can achieve the same thing by using jmap introduced in JDK 1.6

Thanks

edited May 23 '17 at 10:31

Community

answered Jul 30 '13 at 06:45

saurav

1

+1 It doesn't appear on this list of options http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html – Peter Lawrey Jul 30 '13 at 06:47
Is there any alternative for this parameter? Unfortunatelly I don't have the possiblity to downgrade java even for test it. But I would like to make a dump in each moment of running application. – Łukasz Rzeszotarski Jul 30 '13 at 06:51
1

i have never used jmap , but it sounds promising , you can have a try with that. Thanks – saurav Jul 30 '13 at 06:53
1

I found that Java VisualVM which is delivered together with JDK is also a very useful and userfriendly tool. – Łukasz Rzeszotarski Jul 30 '13 at 07:57
... or you can make a dump directly from Eclipse Memory Analyzer which I'm gonna to use. – Łukasz Rzeszotarski Jul 30 '13 at 08:04

1 Answers1