j2ee server is frequently restarting

[Former Member]

hi,

i installed only java in the server.

when we are deploying the applications in NWDS the J2ee engine is frequently restarting and is showing the following error in the browser

<<< SAP WebAS Engine is starting...

If this state does not change within a few minutes,

please contact your system administrator.

Check the recommendations in SAP Notes: 943498, 764417

Message: Dispatcher running but no server connected! >>>

I gone through the snote but i did not get any idea from them.

server : AS Java , EP core , EP.

database : sql 2000

java :1.4.2_13

1. my jdk verion is 1.4.2_13 which is perfectly ok for my server

Plz guide me to solve this issue

Edited by: rahul nuthi on Jan 8, 2009 9:36 AM

Edited by: rahul nuthi on Jan 8, 2009 9:39 AM

Edited by: rahul nuthi on Jan 8, 2009 9:39 AM

[JPReyes]

is the engine coming up at all?... sometime engines can take several minutes to start... anyhow, if the engine is not starting check the logs std_server0.out, dispatcher.out.

Regards

Juan

[Former Member]

hi juan ,

thanks for u r reply

It is frequently restarting on its own when we r deploying the application in NWDS and the browser is showing the above message.

it is getting started after a few minutes but it is happeniong frequently may be i have to change some parameters of heap size kindly guide me in this issue.

thanks,

rahul

Edited by: rahul nuthi on Jan 8, 2009 2:31 PM

[JPReyes]

check the defaulttrace to see if theres any hints on why is crashing.

regards

Juan

[Former Member]

hi,

I had the same problem in two systems. that the J2ee Server restarts frequently.

We raised a message with sAP and they told that the memory Parameters are not rightly set.

Pls try setting the following basic memory parameters and check the same

Refer to note 723909

Change Sizes in Config tool to -Xmx1024m

-Xms1024m

-Djco.jarm=1

-XX:PermSize=256m

-XX:MaxPermSize=256m

-XX:NewSize=171m

-XX:MaxNewSize=171m