Sometimes we end up with phantom messages in ActiveMq or Artemis engines. This is usually the case when due to some network issue/ database issue and inconsistent commit was done. I have no idea if this is a bug of the engine or a known case that can happen because of external causes. The… Read More: #ActiveMq #Artemis – Fix phantom messages issue »
There is this case when disk is full on a server instance running Glashfish Application Server. This sadly has an adverse effect due to some Glashfish bugs that were never fixed. When disk is full several things get corrupted because Glashfish by default uses the disk to store some cached information. First sign you have… Read More: Recover a legacy #Glashfish Application Server from a disk full… »
This is a strange annoying warning that suddenly appeared after I upgraded to JBoss 7.4.2 and was completly flooding my output log. It looks like an warning due to a bad configuration that until version 7.4.2 was ignored. My log looked something like this: Of course the fact that somehow the warning message seems to… Read More: #Jboss #Artemis AMQ153005: Unable to retrieve ${0} from JNDI. Creating… »
The ELK (ElasticSearch+LogStash +Kibana ) stack is maybe the best method to monitor your environment in a simple visually applying way. My task was to monitor the parameters of a Jboss/Wildfly application server where my enterprise application is hosted. There are several guides that describe how to deploy the basic stack, I am not going… Read More: Use #ELK stack to monitor #JBOSS application server »
After migrating from ActiveMq to the embeded JBoss EAP Artemis messaging server ( see link ) I was getting the following error related to the dead message queue (the default queue where messages that failed to be processed end up). 10:21:04,620 WARN [org.wildfly.iiop.openjdk] (ServerService Thread Pool — 7) WFLYIIOP0111: SSL has not been configured but… Read More: #RedHat #JBoss and #Artemis dead-letter queue issue »
As I mentioned in a previous post I am a long time user of WildFly 10 and now in the process of upgrading to WildFly 13. Yes, not the latest version because I have some legacy source code constraints that forces me to not consider yet WildFly 14 and up. WildFly 13 includes an Artemis… Read More: Migrate from #Wildfly 10 + external #ActiveMQ to #Wildfly 13… »
The open-source application server WildFly from which the RedHat owned JBoss application server is derived is one of the most used Java application server lately. This is caused by the strong market consolidation that is happening that caused the Java application server environment to become very restricted. Basically the only open-source enterprise grade Java application… Read More: Allow the use of a transacted session in a #Servlet… »
The following is a very quick guide on how to set up a EasyRSA certificate based authentication of SoapUI API client to connect to a WebService based API that runs on JBoss or WildFly. Generate a local CA with EasyRSA Download and install easy-rsa – https://github.com/OpenVPN/easy-rsa Go to the installation folder and change the following… Read More: #EasyRSA Certificate based authentication of #SoapUI client to a secure… »
WebLogic application server has its share of mind boggling error messages the same as its competition like WebSphere or JBoss. For some weird reason my servers (WebLogic version of a JVM instance) all dies and entered the weird state of “INCOMPATIBLE STATE”. Of course the author of that state label forgot to mention “incompatible with… Read More: #Java #Weblogic : The server is in an incompatible state »
There is a known issue that when you upgrade from Windows 7 Pro to Windows 10 Pro directly you may end up with your only user changed from administrator to guest. This is what happened to me on one of the family laptops. Of course you end up with a stupid useless machine on which… Read More: Elevate guest/standard #Windows 10 user to administrator from safe mode »