How do I stop and start J2EE engine manually on WEB AS

I have installed WEB AS ABAP + JAVA. For some reason J2EE engine is not up after the Java stack installation. How to I start and stop J2EE engine. The visual Admin is not connecting either saying connection lost.
I am running on Linux
thanks

Hi Dhandu,
Please have a look in the <a href="http://help.sap.com/saphelp_nw04/helpdata/en/6e/dd0041aafdf123e10000000a155106/frameset.htm">documentation</a>.
Hope that helps!
Vladimir

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