A tiny MQTT-Broker docker image

Intro Some time ago I started to get a look at MQTT and needed a broker to start with. Eclipse Mosquitto (http://mosquitto.org/) was a logical choice for a quick start and as I am a fan of docker containers for not polluting your local system installation whilst trying new software stacks, I searched for a […]

Quicktipp: Working with more than one package name in a JAXB Context Config in Mule ESB

If you want to structure your code with packages for different JAXB annotated classes, for example after generating JAXB from different WSDLs, do not try to define severall jaxb context elements in Mule ESB, as this is going to fail at runtime. <mulexml:jaxb-context name=“JAXB_Context1“ packageNames=“org.example.test1“ doc:name=“JAXB Context1“ /> <mulexml:jaxb-context name=“JAXB_Context2“ packageNames=“org.example.test2“ doc:name=“JAXB Context2“ /> This […]

Quicktipp: WebLogic Server 12c and BEA-101104: java.net.ProtocolException

The issue ist reported newly as a Bug from Oracle… Technology, KeyWords: WebLogic Server, 10.3, Exception; java.net.ProtocolException Error Message: Problem: We have deployed our application on weblogic ( In the deployed application there is a (or more) link(s) which executes an application jar. The Links are not available in browser and if we check […]

Oracle SOA 12c QuickTip: Enable Servicebus message tracing in DefaultDomain

Messsage or execution tracing in Servicebus (SB) allows insight into the message exchange between Servicebus and it’s communication partners (Client applications and Service providers) as well as the message processing within  a pipeline. Informations about incoming and outgoing messages, the corresponding headers, the course of variable manipulations and other things are written to the diagnostic […]

Resolve JCA connection error in Oracle EBS to SAP integration with OSB 11g

Doing a Oracle EBS to SAP integration with Oracle Service Bus 11g (OSB) I noticed a strange exception at runtime. During the establishment of a connection to the SAP system via the iWay SAP adapter the following error occurs in the adapter logs: servicebus:/WSDL/ebs2sap-data-integration/Sap/v2.0/jca/BAPI_ORACLE_SYNCHRO_RESPONSE_invoke [ BAPI_ORACLE_SYNCHRO_RESPONSEPortType::BAPI_ORACLE_SYNCHRO_RESPONSE(input_BAPI_ORACLE_SYNCHRO_RESPONSE,output_BAPI_ORACLE_SYNCHRO_RESPONSE) ] – : The JCA Binding Component was unable to establish […]

VirtualBox Image not starting up

I often have the situation that I get a pre-installed VirtualBox image with some new Oracle stuff to test. Sometimes these images don’t start with this error message: “This kernel requires an x86-64 CPU, but only detected an i686 CPU. Unable to boot – please use a kernel appropriate for your CPU” The solution here is […]

BEA-003108: Unicast receive error: java.io.EOFException

Technology, KeyWords: WebLogic Server 10.3, Cluster, Unicast, Exception;JAVA.IO.EOFEXCEPTION Error Message: <BEA-003108> <Unicast receive error : java.io.EOFException“ > Problem: If I restart one Managed Server in a Cluster, I get the following error: <Error> <Cluster> <BEA-003108> <Unicast receive error : java.io.EOFException java.io.EOFException at java.io.DataInputStream.readFully(DataInputStream.java:180) at java.io.DataInputStream.readLong(DataInputStream.java:399) at java.io.ObjectInputStream$BlockDataInputStream.readLong(ObjectInputStream.java:2799) at java.io.ObjectInputStream.readLong(ObjectInputStream.java:960) at weblogic.cluster.HeartbeatMessage.readExternal(HeartbeatMessage.java:55) Truncated. see log file […]

JDeveloper QuickTip – Output Console

Ever wondered, where JDeveloper puts its output? It actually prints it on the console. But usually this console is hidden in a Windows environment if you use the pre-installed link. However it’s quite easy to enable. The pre-installed link points to YOUR_MIDDLEWARE_HOME\jdeveloper\jdeveloper.exe. Just change it (or create another link) to point to YOUR_MIDDLEWARE_HOME\jdeveloper\jdev\bin\jdev.exe – et […]