2044336 - Servlet [prt] unavailable due to error "invalid LOC header"

• When trying to access portal, there is following error like followings:
  503 Service Unavailable
  SAP J2EE Engine/7.XX
  Servlet [prt] will be unavailable for undefined time.
  Details: javax.servlet.UnavailableException: Initialization of
  Dispatcher failed
  Exception id: [FA5474B1040200580000004301F500C80004F8251FB56A2E] 

• Search the error in defaultTrace, there will be error like followings:
  [Portal.init] Application Broker - initialization failed.
  [EXCEPTION]
  com.sapportals.portal.prt.runtime.PortalException: [PortalAppBroker.start] applications start failed
  at com.sapportals.portal.prt.core.broker.PortalAppBroker.start(PortalAppBroker.java:1672)
  at com.sapportals.portal.prt.core.broker.PortalAppBroker.startCoreApplications(PortalAppBroker.java:1558)
  at com.sapportals.portal.prt.runtime.Portal.init(Portal.java:377)
  at com.sapportals.portal.prt.core.PortalCoreInitializer.coreInit(PortalCoreInitializer.java:54)
  at com.sapportals.portal.prt.dispatcher.PortalInitializer.<init>(PortalInitializer.java:129)
  at com.sapportals.portal.prt.dispatcher.Dispatcher$doSetupPortalInitializer.run(Dispatcher.java:161)
  at java.security.AccessController.doPrivileged(AccessController.java:246)
  at com.sapportals.portal.prt.dispatcher.Dispatcher.initDispatcher(Dispatcher.java:361)
  at com.sapportals.portal.prt.dispatcher.Dispatcher.access$000(Dispatcher.java:42)
  at com.sapportals.portal.prt.dispatcher.Dispatcher$InitRunner.run(Dispatcher.java:114)
  at com.sapportals.portal.prt.dispatcher.Dispatcher.init(Dispatcher.java:394)
  at com.sap.engine.services.servlets_jsp.server.runtime.context.WebComponents.addServlet(WebComponents.java:139)
  at com.sap.engine.services.servlets_jsp.server.container.ApplicationThreadInitializer.loadServlets(ApplicationThreadInitializer.java:386)
  at com.sap.engine.services.servlets_jsp.server.container.ApplicationThreadInitializer.run(ApplicationThreadInitializer.java:110)
  at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
  at java.security.AccessController.doPrivileged(AccessController.java:219)
  at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:102)
  at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:172)
  Caused by: com.sapportals.portal.prt.runtime.PortalException: [PortalServiceItem.startServices] initialisation failed:com.sap.portal.runtime.config|config
  at com.sapportals.portal.prt.core.broker.PortalServiceItem.startServices(PortalServiceItem.java:1087)
  at com.sapportals.portal.prt.core.broker.PortalAppBroker.startLoadOnStartupServices(PortalAppBroker.java:1707)
  at com.sapportals.portal.prt.core.broker.PortalAppBroker.start(PortalAppBroker.java:1662)
  ... 17 more
  Caused by: java.lang.InternalError: jzentry == 0,
  jzfile = 4704899920,
  total = 327,
  name = /usr/sap/<SID>/DVEBMGS00/j2ee/cluster/server0/apps/sap.com/irj/servlet_jsp/irj/root/WEB-INF/portal/portalapps/com.sap.portal.runtime.config/lib/bc.cfg_core.jar,
  i = 230,
  message = invalid LOC header (bad signature)
  at java.util.zip.ZipFile$2.nextElement(ZipFile.java:338)

• SAP NetWeaver 7.0
• SAP enhancement package 1 for SAP NetWeaver 7.0
• SAP enhancement package 2 for SAP NetWeaver 7.0
• SAP enhancement package 3 for SAP NetWeaver 7.0

invalid LOC header, irj, portal, bootstrap, 503 Service Unavailable , KBA , BC-JAS-COR , Enterprise Runtime, Core J2EE Framework , EP-PIN , SAP Enterprise Portal (On Premise) , How To