Some error message about remoting

[xin.zhang.song]

Hi All

There are some errors in my log file when I lookup the jndi. any comment for it?

My JBoss version is JBoss 7.1.1final

    ![java] ERROR: Failed to open channel for context EJBReceiverContext{clientContext=org.jboss.ejb.client.EJBClientContext@1e75e08, receiver=Remoting connection EJB receiver [connection=Remoting connection <6782a9>,channel=jboss.ejb,nodename=094edb8502c94aa]}
    ![java] org.jboss.remoting3.ProtocolException: Too many channels open
     [java] at org.jboss.remoting3.remote.RemoteConnectionHandler.handleOutboundChannelOpen(RemoteConnectionHandler.java:177)
     [java] at org.jboss.remoting3.remote.RemoteConnectionHandler.open(RemoteConnectionHandler.java:307)
     [java] at org.jboss.remoting3.ConnectionImpl.openChannel(ConnectionImpl.java:75)
     [java] at org.jboss.ejb.client.remoting.RemotingConnectionEJBReceiver.associate(RemotingConnectionEJBReceiver.java:126)
     [java] at org.jboss.ejb.client.EJBClientContext.registerEJBReceiver(EJBClientContext.java:297)
     [java] at org.jboss.ejb.client.EJBClientContext.registerEJBReceiver(EJBClientContext.java:252)
     [java] at org.jboss.ejb.client.EJBClientContext.registerConnection(EJBClientContext.java:342)
     [java] at org.jboss.naming.remote.client.ejb.RemoteNamingEjbClientContextSelector.setCurrent(RemoteNamingEjbClientContextSelector.java:25)
     [java] at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
     [java] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     [java] at java.lang.reflect.Method.invoke(Method.java:597)
     [java] at org.jboss.naming.remote.client.InitialContextFactory.setupEjbContext(InitialContextFactory.java:425)
     [java] at org.jboss.naming.remote.client.InitialContextFactory.getInitialContext(InitialContextFactory.java:115)
     [java] at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:667)
     [java] at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288)
     [java] at javax.naming.InitialContext.init(InitialContext.java:223)
     [java] at javax.naming.InitialContext.<init>(InitialContext.java:197)
     [java] at com.broadvision.sysconf.ServiceAgent._sync_newJndiContextPi(ServiceAgent.java:526)
     [java] at com.broadvision.sysconf.ServiceAgent.newJndiContextPi(ServiceAgent.java:502)
     [java] at com.broadvision.sysconf.ServiceAgent._sync_getBVJndiContextByResource(ServiceAgent.java:365)
     [java] at com.broadvision.sysconf.ServiceAgent.getBVJndiContextByResource(ServiceAgent.java:343)
     [java] at com.broadvision.sysconf.ServiceAgent._sync_getBVAppServerResource(ServiceAgent.java:1010)
     [java] at com.broadvision.sysconf.ServiceAgent.getBVAppServerResource(ServiceAgent.java:984)
     [java] at com.broadvision.data.message.MsgReceiver.subscriberInstance(MsgReceiver.java:385)
     [java] at com.broadvision.data.message.MsgReceiver.registerMessageContext(MsgReceiver.java:170)
     [java] at com.broadvision.data.webcache.WebCacheManager.init(WebCacheManager.java:193)
     [java] at com.broadvision.data.webcache.WebCacheManager.getWebCacheManager(WebCacheManager.java:96)
     [java] at com.broadvision.system.accesscontrol.client.GenericRoleDBContentImpl.appendPermissionList(GenericRoleDBContentImpl.java:622)
     [java] at com.broadvision.system.accesscontrol.client.AdminRole.appendPermissionList(AdminRole.java:219)
     [java] at com.broadvision.system.accesscontrol.schema.ACLPolicy.processRegistryAndPolicy(ACLPolicy.java:547)
     [java] at com.broadvision.system.accesscontrol.schema.ACLPolicy.processSections(ACLPolicy.java:268)
     [java] at com.broadvision.system.accesscontrol.schema.ACLPolicy.parse(ACLPolicy.java:190)
     [java] at com.broadvision.system.accesscontrol.schema.ACLPolicy.initialize(ACLPolicy.java:148)
     [java] at com.broadvision.system.accesscontrol.schema.ACLPolicy.<init>(ACLPolicy.java:128)
     [java] at com.broadvision.system.accesscontrol.schema.ACLPolicy.main(ACLPolicy.java:102)

Thanks

Xin

[nickarls]

org.jboss.remoting3.ProtocolException: Too many channels open

Looks like some sort of resource starvation. Something not being closed?

[xin.zhang.song]

How can I close this thing or increase the number of things?

Thanks

Xin

[nickarls]

If -Djboss.thing.maxlimit=1000 doesn't help (which it won't) I suggest you paste some code here.

[xin.zhang.song]

In my code, There are too many times to look up the EJB.

So I think it will caused this issue.

Thanks

Xin

[xin.zhang.song]

How can I close the remote connection ?

Thanks

Xin

[nickarls]

Hard to say without seeing the related code.

[als]

Shouldnt the connection be closed when you close the InitialContext object?where is the parameter of maximum open channel number in standalone.xml?

[jaikiran]

That looks like this bug https://issues.jboss.org/browse/AS7-3884

Edit: Didn't realize this was 3 month old thread.

[als]

they said in this bug its fixed in 7.1.1 Final which was released at March 2012.And the thread is from 3 month from now. We saw the similar issues at 7.1.1 final. So question is- when I am closing InitialContext - should this kill the connection? Where is the parameter of maximum allowed number of channels in standalone.xml

[jaikiran]

What does your code look like? What kind of lookups are you doing? Are you using remote naming project?

[als]

here is some piece of pseudocode doing exactly what my real code does. should the initialcontext.close() to close the connection?

jndiProperties.put(Context.INITIAL_CONTEXT_FACTORY,                                        "org.jboss.naming.remote.client.InitialContextFactory");

  jndiProperties.put(Context.SECURITY_PRINCIPAL, "user");

                    jndiProperties.put(Context.SECURITY_CREDENTIALS, "pass");

jndiProperties.put(Context.URL_PKG_PREFIXES,                                        "org.jboss.ejb.client.naming");

jndiProperties.put(Context.PROVIDER_URL, "remote://localhost:4447");

jndiProperties.put("jboss.naming.client.ejb.context", true);

                    jndiProperties

                                        .put("jboss.naming.client.connect.options.org.xnio.Options.SASL_POLICY_NOPLAINTEXT",

                                                            "false");

            try {

                               if (context!=null)

                               {          

                               context.close();

  System.out.println("Trying to connect to "+(String)jndiProperties.get(Context.PROVIDER_URL));

                               }

     context = new InitialContext(jndiProperties);

     XRemote m = (XRemote) context.lookup("ejb:" + appName + "/"

                                                  + moduleName + "/" + distinctName + "/" + beanName + "!"

                                                  + viewClassName);

  }catch (Throwable t)

                              {

                                        context=null;

   }

[nickarls]

How about a plain

try {

   // create context

} finally {

  // close context

}

Closing on next request sounds a bit strange. And the null assignment in the catch block is not guaranteed to do any good.