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QUESTION
I am on window 7, oracle 11.2 wildfly 9.0.2, cisco VPN
I can start my wildfly deployment lovely and it works. i close it down using the correct command and then it has killed my DB. The only way i have found to actually get it running again, is to reboot my PC.
After I restart the DB and the TNS service I get this error:
...ANSWER
Answered 2018-Feb-09 at 14:02I had to add and extra section to my listener.ora file I had to add this, as the first entry in the SID_LIST.
I do not know why it helped but eventually somebody else in the office recognised my symptoms.
QUESTION
I Have a standalone Wildfly 9 application server, on which an .EAR file is deployed (consisting of a EJB-JAR and WAR file, using JEE7 with Maven). The error is thrown both at the wildfly server running on an amazon instance and on my local server (localhost, started from IDE Netbeans) and was deployed by building the application and than uploading the EAR file via the webinterface to the server. The application used to deploy fine, but after making some changes to the code and rebuilding the EAR file, When trying to 'replace' the ear-file, I get the following error, showing a NullPointerException.
...ANSWER
Answered 2017-Nov-22 at 09:00You have to do Add not Replace. The reason is you are replacing the old build with a new build of different name
QUESTION
Actually i'm new with Java-ee specification and i'm working on a simple project for training purpose.
The main idea is to create an EJB project named "firstEJB" that contain a simple Java remote, stateless Interface and a simple class for implementation
The second project is a java project in order to use the EJB already deployed on the server, through the context.lookup() method.
The problem is lookup method always throw an exception of type naming exception and i'm pretty sure that i'm using the correct JNDI name.
PS:
- i'm using mac Os x High Sierra as OS
- Wildfly 9.0.2.Final as an application server
- Java SE 1.8
- EJB version 3.2
- Javax 7.0
This is the project Architecture click me
Interface
ANSWER
Answered 2017-Nov-11 at 23:10You must use fully qualified name on client side lookup. Eg.
java:global/firstEJB/CalculetteImplementation!com.esprit.Calculette
Please note, you can use solution described in Code to list all the entries in jndi on remote machine to make sure, EJB bean is successfully registered.
QUESTION
I am moving my Java EE application to JBoss EAP 7 from JBoss EAP 6.4.7. On hitting the application login page, I am getting the page as per the below highlighted text. What change do I need to make in my standalone to redirect to the application login page.
Welcome to JBoss EAP 7 Your Red Hat JBoss Enterprise Application Platform is running. Administration Console | Documentation | Online User Groups To replace this page simply deploy your own war with / as its context path. To disable it, remove the "welcome-content" handler for location / in the undertow subsystem.
...ANSWER
Answered 2017-Oct-17 at 10:26Like the welcome page said :
To replace this page simply deploy your own war with / as its context path.
To deploy an application to the root context ('/'), just add jboss-web.xml with the bellow values to the WEB-INF folder of your WAR :
QUESTION
I am moving my Java EE application from JBoss EAP 6.4.7 to JBoss EAP 7.0. I have installed JDK and have already made the required changes but I am getting an error as per the below message while starting the server even though I am successfully able to create the build.
Persistence.xml:
...ANSWER
Answered 2017-Oct-11 at 09:50This issue can be solved by adding the below properties in persistence.xml file
QUESTION
I am trying to enable session replication in my Wildfly 10.1 application with distributable WARs.
I am running on 2 instances of RedHat 7.2 on a managed host provider with full access to the OS and firewall. I don't have access to the router which our traffic is served, however the host has confirmed that multicast UDP is enabled.
I have SeLinux set to minimum, the ports are open in iptables, the multicast IPs have been subscribed, and my wildfly domain mode configuration is using a cloned full-ha profile with full-ha-sockets:
Here is the domain profile, which is vanilla with the exception of datasources:
...ANSWER
Answered 2017-Jan-31 at 23:51It would be helpful if you posted your entire standalone.xml file.
To Answer your questions:
No, you can use any load balancer. Mod cluster is just nice because Wildfly talks directly to it so servers are removed quicker when shutting down.
yes. With replication all session data is stored in Infinispan which is then replicated to other servers in the cluster.
The primary use case for clustering is to have instances on different servers.
Because I don't have your entire configuration and don't know anything about your hosting here is my best guesses for what is wrong in order I would check:
- You are running in AWS - UDP multicast doesn't work in AWS. you must use another ping method.
- Your server is set up to not accept UDP multicast broadcast. Check all firewall and networking rules.
- Your configuration has a flaw in it. If you post entire configuration I can take a look.
- your web.xml file is missing a tag
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