WebSphere 7 - class loader trace

Question

I have just upgraded to WebSphere 7 (from 6.1), and I am having new class loading conflicts which I didn't have before.

I have looked a lot over the internet but couldn't find directions on how:

1. How to enable class loading trace.
2. Where does the output go to?

Thank you very much.

score 9 · Accepted Answer · edited Oct 08 '14 at 07:33

9

To enable the classloading information you need to go in application server > server_name > Java and Process Management > Process definition > Java Virtual Machine, there you will find the verbose classloading option. Enable it and restart the application server.

You should then find the classloading informations in the native_stderr.log in the <WAS_install_root>/profiles/<profile>/logs/<server> directory.

edited Oct 08 '14 at 07:33

Hunter Medney

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answered Feb 15 '12 at 08:04

Olivier.Roger

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This doesn't work - I see in the log on startup the same info whether flag is on or not – user967710 Feb 21 '12 at 23:43
Have you also looked in the other files ? From what I see and remember I was the native_stdout.log file which was used to log. see , slide 4. – Olivier.Roger Feb 22 '12 at 07:51

score 4 · Answer 2 · answered Mar 28 '13 at 16:05

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To add to Olivier.Roger's response (I don't have the permissions to respond inline), the information is in native_stderr.log.

(late, but for anyone else who finds this thread like I did)

answered Mar 28 '13 at 16:05

patstuart

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score 2 · Answer 3 · answered Feb 16 '12 at 03:05

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I would recommend the class loader MustGather that is used by IBM support when you open a PMR. Expand the "Collecting data manually" section.

answered Feb 16 '12 at 03:05

Brett Kail

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WebSphere 7 - class loader trace

3 Answers3