sunone开启了，服务器不论在本机还是远程的机器都出这个错， client代码如下：
Hashtable ht = new Hashtable();
ht.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.cosnaming.CNCtxFactory");
ht.put(Context.PROVIDER_URL,"iiop://localhost:4848");
Context ctx = new InitialContext(ht);-----进行到这一步时就出错了
报错如下：
javax.naming.CommunicationException: Cannot connect to ORB [Root exception is org.omg.CORBA.COMM_FAILURE: vmcid: SUN minor code: 208 completed: Maybe]
at com.sun.jndi.cosnaming.CNCtx.setOrbAndRootContext(CNCtx.java:362)
at com.sun.jndi.cosnaming.CNCtx.initUsingIiopUrl(CNCtx.java:289)
at com.sun.jndi.cosnaming.CNCtx.initUsingUrl(CNCtx.java:245)
at com.sun.jndi.cosnaming.CNCtx.initOrbAndRootContext(CNCtx.java:209)
at com.sun.jndi.cosnaming.CNCtx.<init>(CNCtx.java:69)
at com.sun.jndi.cosnaming.CNCtxFactory.getInitialContext(CNCtxFactory.java:32)
at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:662)
at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:243)
at javax.naming.InitialContext.init(InitialContext.java:219)
at javax.naming.InitialContext.<init>(InitialContext.java:195)
at examples.Client.main(Client.java:23)
Caused by: org.omg.CORBA.COMM_FAILURE: vmcid: SUN minor code: 208 completed: Maybe
at com.sun.corba.se.internal.iiop.IIOPConnection.purge_calls(IIOPConnection.java:438)
at com.sun.corba.se.internal.iiop.ReaderThread.run(ReaderThread.java:119)
Exception in thread "main"
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服务起是否启动，协议及端口是否正确？
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服务器的DIIOP是否启动？
