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java.net.UnknownHostException: java.sun.com	at java.net.InetAddress.getAllByName0(InetAddress.java:571)	at java.net.InetAddress.getAllByName0(InetAddress.java:540)	at java.net.InetAddress.getByName(InetAddress.java:449)	at java.net.Socket.(Socket.java:100)	at sun.net.NetworkClient.doConnect(NetworkClient.java:50)	at sun.net.www.http.HttpClient.openServer(HttpClient.java:335)	at sun.net.www.http.HttpClient.openServer(HttpClient.java:521)	at sun.net.www.http.HttpClient.(HttpClient.java:271)	at sun.net.www.http.HttpClient.(HttpClient.java:281)	at sun.net.www.http.HttpClient.New(HttpClient.java:293)	at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:404)	at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:497)	at com.sun.xml.parser.Resolver.createInputSource(Resolver.java:253)	at com.sun.xml.parser.ExternalEntity.getInputSource(ExternalEntity.java:49)	at com.sun.xml.parser.Parser.pushReader(Parser.java:2748)	at com.sun.xml.parser.Parser.externalParameterEntity(Parser.java:2500)	at com.sun.xml.parser.Parser.maybeDoctypeDecl(Parser.java:1136)	at com.sun.xml.parser.Parser.parseInternal(Parser.java:480)	at com.sun.xml.parser.Parser.parse(Parser.java:283)	at weblogic.xml.dom.SunDOMParser.getDocument(SunDOMParser.java:69)	at weblogic.xml.dom.DOMParser.getDocument(DOMParser.java:102)	at weblogic.servlet.internal.dd.DescriptorLoader.(DescriptorLoader.java:134)	at weblogic.t3.srvr.HttpServer.loadWARContext(HttpServer.java:717)	at weblogic.t3.srvr.HttpServer.initServletContexts(HttpServer.java:692)	at weblogic.t3.srvr.HttpServer.start(HttpServer.java:493)	at weblogic.t3.srvr.T3Srvr.start(T3Srvr.java:1402)	at weblogic.t3.srvr.T3Srvr.main(T3Srvr.java:885)	at java.lang.reflect.Method.invoke(Native Method)	at weblogic.Server.startServerDynamically(Server.java:140)	at weblogic.Server.main(Server.java:97)	at weblogic.Server.main(Server.java:58)