WebLogic Administrator Questions
How can you see if your OS is running a 64 or 32 bit OSCan you explain me the basic Linux directory structure (/var/log/, /etc, /opt. /dev, /users)How can you see how much disk space is leftCan you see...
View ArticleSOA Architect Questions
How would you monitor a WebLogic instance (hint: console, Nagios/ Oracle Enterprise Manager and or Grid Control/ HP Open View)Need for SOA Governance?Have you read some EAI books, and which EAI...
View ArticleOSB Cluster
Create a new Domain, using the "OSB Production" templateCreate it in "Production" modeCreate MS osb_server1 and osb_server2 and put them into a cluster.You will notice that this deployment:"ALSB...
View ArticleWebLogic cluster in Unicast mode
http://weblogic-wonders.com/weblogic/2010/12/17/comparison-between-cluster-multicast-messaging-and-unicast-messaging-mode/"For the member servers in the cluster, group leaders are chosen and only those...
View ArticleDigging in JNDI
JNDI is a bit of a mystery for me...whenever I get an exception like: javax.naming.NameNotFoundException: While trying to look up comp/env/jms/CF1 in /app/webapp/rocAdmin/1482669104.; remaining name...
View ArticleLync copy and paste nightmare
Very unfortunately I have to use Lync as a chat platform. Some stuff is pretty cool, but there are 2 TERRIBLE issues: one is that you select some text (ANY text), copy and paste (in any way you want)...
View Articleno more stinky cmd prompt in Windows: use cmder instead!
http://cmder.net/Download the "full" edition from https://github.com/cmderdev/cmder/releases . Unzip. Run cmder. If you install the version from the main page you get a...
View Articleinstalling WLS 12.2.1 on Linux RHEL 6.5
Download the generic installer fmw_12.2.1.0.0_wls.jar from http://www.oracle.com/technetwork/middleware/fusion-middleware/downloads/index.html and put into /opt/install/ Download Java 8 JDK from...
View Articlejavax.transaction.SystemException: SubCoordinator not available
If you see this "javax.transaction.SystemException: SubCoordinator not available" in the logs, AND you have recently moved your domain to new servers, it could very well be that you need to purge your...
View ArticleGetting started with JSF and CDI
I have followed this tutorial http://reka-neva.blogspot.ch/2014/08/weblogic-jsf-2-tutorial.htmlClone this git repo https://github.com/vernetto/JSFWeb.git . It's an Eclipse 4.3 OEPE for WLS 12.1.3...
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Book: Pro JSF and HTML5
The book does a very good job at explaining the intricate history and structure of JSF framework, particularly regarding the CDI aspects. So definitely I would recommend it as an introduction to JSF....
View ArticleJProfiler: Ingo Kegel man of the year
I was looking for training material on JProfiler and I found some 15 videos on youtube created by Ingo Kegel. He is really very professional! Thanks a lot Ingo! Ingo for President!
View ArticleLimiting concurrent MDB pumping messages from a JMS (or MQ) queue (throttle)
you can use work managers with max-threads-constraint, or max-beans-in-free-pool : this is the ultimate source of truth... remember that by default you have only 16 concurrent beans registered as...
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Java Mission Control JMC with Java 7 u79
jmc is installed OOTB with this jmc.ini file:...
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JMC: how to capture details of caught and unlogged exceptions
It happens occasionally that inexperienced programmers catch an exception and ignore it, or they catch it and throw another exception without reporting the full details of the root cause. This...
View ArticleSCAN and REDIRECT with Oracle RAC
If you access a ORACLE RAC, be aware that you must open a firewall rule not only for the SCAN listener, but also to all the RAC instances. Connections are NOT routed via the SCAN listeners, they are...
View ArticleWLS 12.2.1 QUICK installer ignores response file
I was trying to install fmw_12.2.1.0.0_wls_quick.jar using the usual command line: /usr/java/jdk1.8.0_65/bin/java -jar /opt/install/fmw_12.2.1.0.0_wls_quick.jar -silent -logLevel finest -debug...
View ArticleFind all Java classes implementing a given interface.... reflections!
https://code.google.com/p/reflections/ Download the ÜBER JAR here https://code.google.com/p/reflections/downloads/detail?name=reflections-0.9.9-RC1-uberjar.jar&can=2&q=package...
View Articlejava.lang.ArrayStoreException
When creating an array, remember that it will be not of the type declared for the variable, but of the type decided in the initializer: public class ArrayStoreExceptinTest { public static void...
View ArticleDebugging SSL with javax.net.debug=all
This is a guide to interpreting the output of -Djavax.net.debug=all: https://docs.oracle.com/javase/7/docs/technotes/guides/security/jsse/ReadDebug.htmland this is what I get...
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