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Issues with J2EE engine memory settings.

Hi SDN!

I've got Web AS server 7.0 (Java only) on laptop for development use. Laptop has 2 GB RAM and 1,83GHz Core 2 Duo CPU

I have several issues with Java Engine.

1)J2ee instance Settings.

For Instance:

- "Message server & bootstrap" node

- max heap size: 256

- "Servers general" node

- max heap: 1024

-Xmx1024m

-Xms1024m

-XX:PermSize=256m

-XX:MaxPermSize=256m

For Dispatcher:

- "General" node:

- max heap size: 170

-Xms170m

-XX:NewSize=57m

-XX:MaxNewSize=57m

- "Bootstrap" node:

- max heap: 256

For Server:

- "General" node:

- max heap size: 1024

-XX:MaxPermSize=256M

-XX:PermSize=256M

-Xmx1024m

-Xms1024m

-XX:NewSize=171M

-XX:MaxNewSize=171M

- "Bootstrap" node:

- max heap size: 256

When I turn debug mode on for server via config tool, I've got 503 error and message "SAP WebAS Engine is starting... Message: Dispatcher running but no

server connected!" but in SAP mmc server instance looked like started (green color).

Windows Taskmanager shows me that 2GB total memory and near 600 MB of memory free.

Also I'm confusing about these nodes ("general", "bootstrap") with similar parameters and don't know which parameters I should set up according to note

723909.

2) I need to modify Java applications, build, deploy to local server and debug it there. Also may be ABAP debug will be used. Please give me information

about optimised engine (and, if needed, NWDS) settings for these tasks.

Help will be appreciated.

Regards, Lev

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1 Answer

  • Best Answer
    author's profile photo Former Member
    Former Member
    Posted on Jul 18, 2008 at 10:09 PM

    In general terms, the bootstrap process is what is used as java is starting up and pulling objects into memory. The heap used for the bootstrap process (I believe) is returned to the system after startup.

    The server process is where the Java application server applications are so it will require the most heap.

    Does that help?

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