Pierre Hugues Charbonneau

Pierre-Hugues Charbonneau (nickname P-H) is working for CGI Inc. Canada for the last 10 years as a senior IT consultant. His primary area of expertise is Java EE, middleware & JVM technologies. He is a specialist in production system troubleshooting, root cause analysis, middleware, JVM tuning, scalability and capacity improvement; including internal processes improvement for IT support teams. P-H is the principal author at Java EE Support Patterns.

Core Java
Pierre Hugues CharbonneauAugust 31st, 2012
0 41
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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Enterprise Java
Pierre Hugues CharbonneauAugust 14th, 2012
0 41
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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Enterprise Java
Pierre Hugues CharbonneauAugust 2nd, 2012
0 38
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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Enterprise Java
Pierre Hugues CharbonneauJuly 18th, 2012
2 416
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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Core Java
Pierre Hugues CharbonneauJuly 13th, 2012
2 187
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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Core Java
Pierre Hugues CharbonneauJuly 6th, 2012
3 121
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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Core Java
Pierre Hugues CharbonneauJune 20th, 2012
2 65
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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Core Java
Pierre Hugues CharbonneauJune 17th, 2012
1 109
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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Core Java
Pierre Hugues CharbonneauJune 13th, 2012
13 242
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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