Websphere Application startup error -

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i using websphere 7 , getting error while trying start application.

00000018 servlet       e com.ibm.ws.webcontainer.servlet.servletwrapper init srve0100e: uncaught init() exception created servlet application initialization servlet in application xxx-portal: java.lang.nullpointerexception @ com.xyz.zyx.web.init.applicationinitservlet.init(applicationinitservlet.java:75)

and code : 

final properties props =             init.initialize(url, getservletcontext().getrealpath("/web-inf/classes"));

don't know happened of sudden..something have change in server parameters since cannot change code.

the solution simple:

go installed applicaton > class loader , update detection > under war class loader policy, select 'single class loader'

now application start.

found after long struggle .


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