Tag Archives: jvm

Storm event processor – GC log file per worker

How to use a gc log file per worker of Storm event processor Continue reading

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Posted in Big Data, Java, Software Development | Tagged , | 1 Comment

Set WildFly binding address and shutdown using CLI

Real example to start JBoss/WildFly on a specific IP using command line parameters and how to shutdown server using JBoss/WildFly CLI tool Continue reading

Posted in Administration, JBoss | Tagged , | Leave a comment

Java bytecode verification is always REQUIRED

Never disable bytecode verification when running java as may lead you to security problems. Continue reading

Posted in Administration, Java, Java EE | Tagged , , , , , , , | Leave a comment

Java heap space, native heap and memory problems

A java process is consisted of java heap space, native C-Heap space and more. What problems can you face when these two are in conflict and how can you solve them? Continue reading

Posted in Java | Tagged , , , , , , | 2 Comments

How to identify if installed JDK is 64 or 32 bit

A method to identify if an installed JDK is 32-bit or 64-bit. Continue reading

Posted in Administration, Java, Software Development | Tagged , , , , , | 2 Comments

Java Thread at RUNNABLE state is not really running

Which are the main reasons that even a Java thread is at RUNNABLE state it is not really running. Continue reading

Posted in Java, Software Development | Tagged , , , , | 5 Comments

JRockit – JRCMD useful commands

Describe a few crucial diagnostic commands of JRCMD of JRockit JVM to help you on troubleshooting. Continue reading

Posted in Administration, Java, Software Development | Tagged , , , , | 9 Comments