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Question by Pierre D. · Mar 27, 2015 at 09:07 PM · diagnostics

find who instanciate char[]

Hi,

 

is there a way to find who instanciate a primitive type via dynatrace , like an array of chart (chart[]) ?

Pierre

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Answer by Pierre D. · Mar 30, 2015 at 04:27 AM

fine (smile)

thanks Andi

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Answer by Pierre D. · Mar 29, 2015 at 10:08 PM

hi Andi,

thank, the error 404 remains for "http://apmblog.dynatrace.com/2014/01/07/hunting-a-oracle-jdbc-memory-leak-crashing-an-80jvm-websphere-cluster?_ga=1.206791571.1047187150.1425657146"

regards.

Pierre

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avatar image Andreas G. ♦ · Mar 30, 2015 at 12:43 AM 0
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Hmm. Maybe your browser cached that page? Can you try once more? I changed the cache settings

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Answer by Pierre D. · Mar 28, 2015 at 04:49 PM

Andreas, the link is broken:

Not found, error 404

The page you are looking for no longer exists. Perhaps you can return back to the site's homepage and see if you can find what you are looking for. Or, you can try finding it with the information below.

 

I've found here http://insidetechtalk.com/hunting-oracle-jdbc-memory-leak-crashing-80jvm-websphere-cluster/

 

many thanks (smile)(smile)(smile)

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avatar image Andreas G. ♦ · Mar 29, 2015 at 10:03 PM 0
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Hi. sorry for the broken link. the original post is available now.

Cheers

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Answer by Andreas G. · Mar 28, 2015 at 04:32 AM

I think I have the solution to your problem - check out this blog post - exactly your problem: http://apmblog.dynatrace.com/2014/01/07/hunting-a-oracle-jdbc-memory-leak-crashing-an-80jvm-websphere-cluster


 

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Answer by Pierre D. · Mar 28, 2015 at 03:02 AM

in fact as you can see I've a prepared statement which reference around 6.5 Go of char.

Is there a way to find which allocate them (I mean which query) ?

It occurs in a batch process, triggered in, an Application Server so i don't have the purepath for the whole process and those char are loaded before purepathes are recorded.

Nothing in hotspot;

but huge char in shallow classes:

Pierre

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Answer by Pierre D. · Mar 28, 2015 at 02:54 AM

I've got them, but I can't get the content of cha, any solution?

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Answer by Pierre D. · Mar 28, 2015 at 01:41 AM

Many thanks Andi (smile)

 

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Answer by Andreas G. · Mar 28, 2015 at 01:33 AM

You can configure the size of the analysis server. It should at least be as much as the JVM Heap Space, 8GB in your case. You can configure that size in the dtanalysisserver.ini file by adjusting the -Xmx setting

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Answer by Pierre D. · Mar 28, 2015 at 01:21 AM

Hi Andy,

It tried but finally stopped, Analysis server has no enough memory, the JVM is quite large 8 Go.

I will try then.

thanks

Pierre

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Answer by Andreas G. · Mar 28, 2015 at 01:05 AM

Have you tried a Full Memory Dump? Check out my blog about this: http://apmblog.dynatrace.com/2014/10/28/hands-tutorial-5-steps-identify-java-net-memory-leaks/

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