Java 7: HashMap vs ConcurrentHashMap

As you may have seen from my past performance related articles and HashMap case studies, Java thread safety problems can…

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8 Ways to improve your Java EE Production Support skills

Everybody involved in Java EE production support know this job can be difficult; 7/24 pager support, multiple incidents and bug…

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Oracle Service Bus – Stuck Thread Case Study

This case study describes the complete root cause analysis process of a stuck thread problem experienced with Oracle Service Bus…

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5 tips for proper Java Heap size

Determination of proper Java Heap size for a production system is not a straightforward exercise. In my Java EE enterprise…

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java.lang.NoClassDefFoundError: How to resolve – Part 3

This article is part 3 of our NoClassDefFoundError troubleshooting series. As I mentioned in my first article, there are many possible…

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How to analyze Thread Dump – Thread Stack Trace

This article is part 5 of our Thread Dump analysis series. So far you have learned the basic principles of…

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Java Thread deadlock – Case Study

This article will describe the complete root cause analysis of a recent Java deadlock problem observed from a Weblogic 11g…

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java.lang.NoClassDefFoundError: How to resolve – Part 2

This article is part 2 of our NoClassDefFoundError troubleshooting series. Take a look at part 1. It will focus and…

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java.lang.NoClassDefFoundError: How to resolve – Part 1

Exception in thread ‘main’ java.lang.NoClassDefFoundError is one of the common and difficult problems that you can face when developing Java…

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