JAVA Error in SAP Management Console in single stack

[Former Member]

Dear Experts,

Our client  SAP-PI 7.31 JAVA only server started displaying number of error message and I do have much hand in

BASIS activities since being a SAP-PI consultant. I tried searching the issue in forums but in vain..

Some of the error messages generated in Management Console are shown below.

1.JAVA Instance Task ABC shut down...

2.Server Cache 41per<50 perc average over 5 minutes below threshold  (22 values.)

3.JAVA Heap Memory 97%> 80 %  last value above threshold.

Could anyone suggest how to solve the issue?

Regards

Rebecca

[Reagan · Accepted solution]

3.JAVA Heap Memory 97%> 80 %  last value above threshold.

This makes it almost certain that there is a shortage of memory for the Java stack.

Few things I would check:

The JVM used on the server for the J2EE stack - JAVA_HOME

The heap memory assigned to the server nodes - -Xms/-Xmx

The memory available on the server.

Additionally review the dev_server and std_server logs in the work directory

[Former Member · Accepted solution]

Hi Reagan,

I would like to know the path and navigation details where I can increase or decrease the value to stabilize the JAVA memory space in the server.

Cheers..

Rebecca..

[Reagan · Accepted solution]

Hello Rebecca

You need to use the ConfigTool located at /usr/SAP/SID/JCxx/j2ee/configtool

https://help.sap.com/saphelp_nw73/helpdata/en/47/c5978ee5d92d65e10000000a42189c/content.htm

Regards

RB

[hemanth2]

Hi Rebecca,

Hope you are doing good.

For the "1.JAVA Instance Task ABC shut down..." check the work folder files and the default traces.

For the "3.JAVA Heap Memory 97%> 80 %  last value above threshold..." increase the heap memory values by atleast 1 GB if you have enough resources on the engine. On how to do this, see:
Configuring JVM Parameters - Administration - SAP Library

For this particular reason, SAP has developed the Quick Sizer (which is a Web-based tool).

This is available free of cost for customers from: <http://service.sap.com/quicksizer>

and

<http://service.sap.com/sizing>

You will be able to identify whether more hardware/ server nodes etc. are needed and resize the server accordingly. With the Quick Sizer you can translate business requirements into technical requirements. Simply fill in the online questionnaire, an up-to-date survey that is based on business-oriented figures. The results you obtain can help you select an economically balanced system that matches your company's business goals.

For 7.3 server in particular, do go through:

SDN Article: Performance Best Practices Guide for SAP NetWeaver Portal 7.3,

<http://scn.sap.com/docs/DOC-7284>

SDN Article: SAP NetWeaver Portal 7.3 - Tuning Caches,

<http://scn.sap.com/docs/DOC-7383>

Thank you!

_____________

Kind Regards,

Hemanth

SAP AGS