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question asked: Aug 22 '17, 11:05 a.m.
question was seen: 1,984 times
last updated: Aug 23 '17, 4:13 a.m.

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System requirments for JTS + DM,CCM,DCC,RELM,LQE,QM,RS,RM

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Evgeny Yuzov (11●5) | asked Aug 22 '17, 11:05 a.m.

Hi All.


We have installed JTS + DM,CCM,DCC,RELM,LQE,QM,RS,RM on standalone server. Also on this server installed DB2 database. Server is virtual server and has 20Gb Ram.

Periodically we have problem - OutOfMemoryError.
Startup.bat has those parameters:
set JAVA_OPTS=%JAVA_OPTS% -Xmx13G
set JAVA_OPTS=%JAVA_OPTS% -Xms13G
set JAVA_OPTS=%JAVA_OPTS% -Xmn4G

What we  can to do for normalize work with product?

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Ian Barnard (2.3k●7●14) | answered Aug 22 '17, 12:20 p.m.
FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER
edited Aug 22 '17, 12:49 p.m.

Not an expert in production deployment, but having all the apps (in particular LQE and DCC which is installed with JRS are resource-hungry) on one server is going to stress it. And using a virtual server probably won't help.

Have you checked the deployment wiki https://jazz.net/wiki/bin/view/Deployment/DeploymentPlanningAndDesign
And there is a specific article about recommended topologies for 6.0 here https://jazz.net/wiki/bin/view/Deployment/RecommendedALMDeploymentTopologies6 with links to other information.

The KnowledgeCenter has deployment guidelines with links to more detailed information here https://www.ibm.com/support/knowledgecenter/SSYMRC_6.0.4/com.ibm.jazz.install.doc/topics/c_deployment_considerations.html

And here are the system requirements for 6.0.4 and earlier versions https://jazz.net/wiki/bin/view/Deployment/SSESystemRequirements604

Comments
Alan Sampson commented Aug 22 '17, 2:14 p.m.
JAZZ DEVELOPER

You should never plan to deploy all the applications into a single server system as the processing model for LQE and DCC have conflicting requirements with the other applications. DCC and LQE are designed to load data into processor memory to improve performance and the result is that the other applications become starved of memory and cannot allocate heap. This results in the OutOfMemory errors you are seeing.

At a minimum you should move DCC and LQE onto separate servers so they don't conflict with each other and/or the other CLM applications.

Evgeny Yuzov commented Aug 23 '17, 1:54 a.m. | edited Aug 23 '17, 2:19 a.m.
 Thanks a lot for explanation.

At all, if i understand correctly, i should have those structure - one server with IBM Jazz Reporting Service and second with other CLM apps. And, ideally DB2 on third
Ian Barnard commented Aug 23 '17, 4:10 a.m. | edited Aug 23 '17, 4:13 a.m.
FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER

As Alan said, the key apps to split out onto separate servers (plural, i.e. one server each, i.e. not co-located) are DCC and LQE.  There is all sorts of deployment guidance on the links I gave. And yes DB2 on its own server too.



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