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Memory problem with NWDS

Dear Colleagues,

I use NWDS 7.31 on Windows 7 64 Bit with SAP JVM 6 and get the following error while using the SAP memory analyzer tool

in NWDS to open a 3.7 GB heap dump:

I have 8GB RAM and it should be no problem to parse the heap dump. It seems I simply need to increase the heap space.
In the folder where the executable SapNetweaverDevloperStudio.exe resides, the SapNetweaverDeveloperSudio,.ni file is configured as

-vm

C:\Program Files (x86)\SAP\SAP JVM 6 (61_REL i486 opt)\bin

-startup

plugins/org.eclipse.equinox.launcher_1.0.201.R35x_v20090715.jar

-nl

en

-vmargs

-Xmx512m

-Xms128m

-XX:PermSize=32m

-XX:MaxPermSize=384m

-Dfile.encoding=UTF-8

-Dosgi.requiredJavaVersion=1.6

-XX:+HeapDumpOnOutOfMemoryError

-Djavax.net.ssl.trustStoreProvider=SunMSCAPI

-Djavax.net.ssl.trustStoreType=Windows-ROOT

I increased -Xmx, but unfortunately, if -Xmx is set to 1024m or larger, NWDS does not start anymore.

What should I do? According to the error message I get, I should increase -Xmx to at least 1.7GB.

Ideally, I want to increase -Xmx as much possible in order to parse very large heap dumps.

Maybe I should first increase the allowed heap size on OS level and then edit again the *.ini file?

Thank you and kind Regards

Rainer

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1 Answer

  • Dec 25, 2012 at 11:00 AM

    don't use nwds

    download the memory analyzer(64bit) from http://www.eclipse.org/mat/downloads.php.

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