java.net.socketinputstream.socketread0 hangs thread

This article will provide you a detailed explanation on how you can identify, resolve and prevent Thread hang problems involved in a java.net.socketinputstream.socketread0 blocking IO operation. Proper understanding of these concepts is quite important when developing and supporting a Java EE production system since lack of proper timeout and understanding will eventually bring your system to its knees via Thread depletion. Background Modern...

Read More

Class loader memory leak debugging tutorial for IBM VM

This article will provide you with a step by step tutorial on how you can pinpoint root cause of Java class loader memory leak related problems. A recent class loader leak problem found from a Weblogic Integration 9.2 production system on AIX 5.3 (using the IBM Java VM 1.5) will be used as a case study and will provide you with complete root cause analysis steps.    Environment specifications (case study) ·       ...

Read More

Java Heap leak using Weblogic 10.0 and Apache Lucene 2.3.2

This case study describes the complete root cause analysis of a Java Heap leak problem experienced with Oracle Weblogic 10 and using the open source text search engine Apache Lucene 2.3.2. Environment specifications ·         Java EE server: Oracle Weblogic Portal 10.0 ·         OS: Solaris 10 64-bit ·         JDK: Sun...

Read More