Java

Documentum story – Add the Java urandom inside the wlst.sh script to improve the performance of all WLST sessions

WebLogicServer takes a long time (e.g. over 15 minutes) to startup. Can the performance be improved? Using /dev/urandom option in the Weblogic Java Virtual Machine parameters from startup script, can be the solution. In fact, /dev/random is a(…)

Java: Cannot delete file?

You may once went into the struggle to delete a file in java? So do I… I went so mad when I figured out that my files were still present even after a file.delete() or file.deleteOnExit(). It always(…)

Trying AppDynamix – monitoring application from user to database

By Franck Pachot . I like to come upon new monitoring software that help to go quickly from user response time to root cause. And I love applications that can be installed easily and at which I can give a(…)

Software architecture vs code representation

Tuesday the 10th of November I attended a public lecture at Swiss Java User Group in Zürich. Topic of the pretension was to describe and address challenges any project manager can encounter, when reflexion switches from perspective of software(…)

How to set NLS for SQL Developer

By Franck Pachot . I’m using Oracle SQL Developer 4.1 Early Adopter for a while and I like it. That version comes with a command line (in beta) which goal is to be fully compatible with sqlplus but(…)

Exception from executeScript in Alfresco Share

I didn’t have the opportunity to post a new entry about Alfresco in this blog for a long time now, so I will fix this! In this blog entry, I will talk about a bug I encountered a few(…)

Java get Class names from package String in classpath

As a Java developer you probably used to know about reflexion. However, in order to keep your software architecture flexible, some functionalities are sometimes not provided out of the box by the JVM. In my particular case, I(…)

Oracle EM agent 12c thread leak on RAC

By Franck Pachot . In a previous post about nproc limit, I wrote that I had to investigate the nproc limit with the number of threads because my Oracle 12c EM agent was having thousands of threads. This(…)

Java Mission Control 5.2 (7u40) deserves your attention

Recently, some new versions of java were made available. Most people think Java updates are boring and only security-oriented. But one of the last updates (7u40) includes a feature which deserves attention. I mean Java Mission Control 5.2. Hotspot incoming(…)

Understanding JVM Java memory leaks

Lots of people think that Java is free of memory management as the JVM uses a Garbage Collector. The goal of this collector is to free objects that are no longer used in the program without the developer being(…)