Question

Unable to start JVM on Solaris 10

Asked by: jasbani

I am having odd issue starting up JVM.
The summary is as below:
I have Websphre 6.1.0.23 Installed on SPARC-Enterprise-T5220, that contains 2 nodes, 1 Dmgr, 2 app servers.
Now what is happening is when I am starting up servers, from them any one of the server is not starting... I mean four JVM's are up at any particular point of time, but when I am trying to start 5th Jvm , it do not start. And If I stop any of the JVM.. either Node or App or Dmgr, the other jvm starts.

This server has 64 Gb of Memory and only 4 GB is occupied.. rest 60 GIG is free.

Please let me know any suggestions or anybody faced the same issue. This is a new machine.. Do I need to set up system variables or any OS level tuning is need ? Thanks in Advance

error:
ADMU3011E: Server launched but failed initialization. startServer.log,

but there is nothing under startServer.log except failure message.

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Asked On
2009-06-19 at 15:45:32ID24507308
Tags

WebSphere 6.1

,

Solaris 10

,

unix

Topics

Sun JDS

,

WebApplications

,

Sun Solaris

Participating Experts
2
Points
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Comments
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Answers

 

by: jasbaniPosted on 2009-06-19 at 20:12:08ID: 24672000

project.max-shm-memory
        privileged      15.6GB      -   deny                                 -
        system          16.0EB    max   deny  


I entered the following commands and exit and relogin on the box.

bash-3.00# projmod -s -K 'project.max-shm-memory=(privileged,4gb,deny)' user.root
bash-3.00# projmod -s -K 'project.max-shm-ids=(privileged,1024,deny)' user.root
bash-3.00# projmod -s -K 'project.max-sem-ids=(privileged,1024,deny)' user.root
bash-3.00# projmod -s -K 'project.max-sem-nsems=(privileged,512,deny)' user.root
bash-3.00# projmod -s -K 'project.max-sem-ops=(privileged,512,deny)' user.root
bash-3.00# projmod -s -K 'project.max-file-descriptor=(privileged,1024,deny)' \

I can see outofmemory at the startup of application.

 

by: yuzhPosted on 2009-06-20 at 22:49:14ID: 24676306

 

by: jasbaniPosted on 2009-06-22 at 12:36:00ID: 24685741

i have tried that all earlier..but no use

 

by: RowleyPosted on 2009-06-23 at 00:56:09ID: 24689774

Are you intending to use projects for your app? Is it running as root (!!) or another user? Capping the default root user could be a very bad idea, and you have capped shared mem at 4gb for the root user...

http://docs.sun.com/app/docs/doc/817-1592/rmintro-1?l=en&a=view

Have you specified your jvm memory parameters within your application start-up scripts? See page 16 here:
http://java.sun.com/j2se/reference/whitepapers/memorymanagement_whitepaper.pdf

Examples of setting memory parameters here:
http://www.unixville.com/~moazam/stories/2004/05/17/maxpermsizeAndHowItRelatesToTheOverallHeap.html

 

by: jasbaniPosted on 2009-06-24 at 03:10:31ID: 24699659

Hello Rowley

Yes, I am using projects for my App and that is running as non-root but has privilege of root. I also have sudo to set up projects. I am reviewing the docs you sent, Thanks for that.

 

by: jasbaniPosted on 2009-06-26 at 22:21:11ID: 24726434

Nothing helped till now.

I am able to start 4-5 java process at one time, when I am going to start 6th jvm, It crashes or throw out of memory error.
Caused by: java.lang.OutOfMemoryError: unable to create new native thread

I confirmed from UNIX guy that all the physical memory is all dedicated to this zone.
The total physical memory is 64Gig.

Does anybody know what setting are really necessary to tune Solaris OS 10 for websphere 61.

Thanks in Advance

 

by: yuzhPosted on 2009-06-28 at 20:18:23ID: 24733471

Have you read all the links  in myprevious comment?

 

by: jasbaniPosted on 2009-07-07 at 17:03:39ID: 24799629

This issue has been resolved. Solution is as below:
The zones were using the default capping for lightweight processes of 1000. This is usually a value based on best practice (and usually good enough, java apps usually require it to be boosted). So unix configured max lwps to 5000 that resolved this issue. Thank you all for your help.

 

by: yuzhPosted on 2009-07-07 at 18:20:46ID: 24799902

Hi jasbani,

Good to know you fixed the problem, please PAQ this question, it might help the EE user in the future,

thank you!

20120131-EE-VQP-002

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