java - Illegal access: this web application instance has been stopped already. Could not load org.apache.log4j.spi.NOPLoggerRepository -


i using netbeans 6.7 tomcat 6.0 , jasper reports generating reports in web application. exception when run application. can please me out?

the exception is

info: illegal access: web application instance has been stopped already.  not load org.apache.log4j.spi.noploggerrepository.  eventual following stack trace caused error thrown debugging purposes attempt terminate thread caused illegal access, , has no functional impact. java.lang.illegalstateexception         @ org.apache.catalina.loader.webappclassloader.loadclass(webappclassloader.java:1566)         @ org.apache.catalina.loader.webappclassloader.loadclass(webappclassloader.java:1526)         @ org.apache.log4j.logmanager.getloggerrepository(logmanager.java:175)         @ org.apache.log4j.logmanager.getlogger(logmanager.java:199)         @ org.apache.log4j.logger.getlogger(logger.java:105)         @ org.apache.commons.logging.impl.log4jlogger.getlogger(log4jlogger.java:283)         @ org.apache.commons.logging.impl.log4jlogger.info(log4jlogger.java:193)         @ org.hibernate.connection.drivermanagerconnectionprovider.close(drivermanagerconnectionprovider.java:147)         @ org.hibernate.connection.drivermanagerconnectionprovider.finalize(drivermanagerconnectionprovider.java:142)         @ java.lang.ref.finalizer.invokefinalizemethod(native method)         @ java.lang.ref.finalizer.runfinalizer(finalizer.java:83)         @ java.lang.ref.finalizer.access$100(finalizer.java:14)         @ java.lang.ref.finalizer$finalizerthread.run(finalizer.java:160)

it due memory problem, had message , java.lang.outofmemoryerror: java heap space, adjusting startup parameters to: -xx:permsize=512m -xms1024m -xmx4096m solved problem problem.


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