Category: Java

Alfresco 4.3.d PDFBox fatal error Java Runtime

Our JVM kept crashing as soon as we went to the ‘Document Library’ within Alfresco 4.3.d

We tracked the issue down to a uploaded PDF file which contained metadata that the shipped version of PDFBox 1.2.1 (pdfbox-1.2.1.jar) chokes on and takes out the JVM.

By replacing the pdfbox.jar with the latest version pdfbox-1.7.1.jar our issues seem to have gone.

Replace old file with new in :  /alfresco-3.4.d/tomcat/webapps/alfresco/WEB-INF/lib/

Random error we where receiving in ‘catalina.out’ shown below:

# A fatal error has been detected by the Java Runtime Environment:
# SIGSEGV (0xb) at pc=0x59ee264a, pid=4534, tid=1553988496
# JRE version: 6.0_18-b07
# Java VM: Java HotSpot(TM) Server VM (16.0-b13 mixed mode linux-x86 )
# Problematic frame:
# C []
# An error report file with more information is saved as:
# /opt/alfresco-3.4.d/hs_err_pid4534.log
# If you would like to submit a bug report, please visit:
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.

Jinitiator repaint on Windows 7

When using my fix to get Jinitiator to work with Windows 7, you might of noticed that your screen is reduce to the Windows 7 basic theme.

I thought I’d write a separate post about how to fix this, as it’s something I often get asked how to do.

Click Start > Control Panel > JInitiator
‘Basic’ Tab
In the ‘Java Runtime Pparameters’ box, add this:
‘Apply’ & click ‘Close’.

Now restart your machine.

Now on launching your website application, Windows will no longer be forced into using the basic theme.

NetBeans 6.9.1 launches 6.9 instead, 64-bit Java and Windows 7

I love NetBeans. Sean loves MyEclipse. We both use whichever is most appropriate for the current task. Both have their sweet spots but I think NetBeans is a lot less fiddly to maintain and use…usually.

My most recent attempt to install NetBeans 6.9.1 failed. I couldn’t get it to work on Windows 7 Enterprise 64-bit. Everything about the installation process seemed to work. No errors were thrown and the correct shortcuts were created but whenever I tried to launch 6.9.1 it launched 6.9 instead (I had installed 6.9 previously).

After some digging around and comparing my setup to Sean’s I suspected NetBeans 6.9.1 couldn’t find the version of Java it needed so 6.9 was launched instead. I had loads of Java and NetBeans  installations present but not Java 1.6.0_21. I read somewhere about the JavaFX updates needing 1.6.0_21 so I installed it but NetBeans continued to run using the older Java 1.6.0_18 that had been specified during installation.

Isolating the root cause would have been nice, but we’re working in a business here so the best solution tends to be the fastest solution. I removed all the NetBeans installations apart from 6.8 (so I could inherit settings from it). During uninstallation of NetBeans I also opted to remove the settings directory. NetBeans didn’t go quietly. Uninstall program list items remained after uninstallation and the uninstall process failed for second uninstall which prevented any further uninstall attempts until I rebooted. The joys of Windows 7. I then removed all Java installations. I decided to install the 32-bit version of the JDK 1.6.0_21 because the 64-bit version has auto-update disabled and we want auto-update. I then installed NetBeans 6.9.1. Upon launching NetBeans, all was well.

Lessons learned:

  • need to do a bit of tidying up every now and again
  • Windows 7 is still annoying
  • 64-bit apps are often more trouble than they are worth.

Watch out for 64-bit Java/NetBeans issues:

Jinitiator working on Windows 7

We need ‘Jinitiator’ to use a core application. The applications in-house team havent managed to get it working with JRE, which is the replacement to Jinit. They insist that you must use Jinitiator & windows XP! Joy! We also know that Jinit is no longer supported by Oracle & refuses to work with Windows 7.

So how do you get around this ?

Install Jinitiator as normal, if your having problems actually getting it to install, just use the Win7 ‘compatibility mode’ to get it to stay on your machine instead of it annoyingly uninstalling itself at the end of a failed install process.


Replace the ‘jvm.dll’ in jinitiator directory (C:\Program Files (x86)\Oracle\JInitiator\bin\hotspot\) with this file jvm.dll.

Restart IE* and try again, Windows 7 should reduce your colour scheme and your app should now work.

See post repaint blog post on how to fix the repaint screen issues, if they are happening to you.

*Note, I would never normally recommend Internet Explorer, it’s just that this process doesn’t work for me using Chrome or Firefox, my preferred browsers.

.jar file associations and Windows 7

Has your .jar associations ever been hijacked ?

Mine too, after spending far too long following suggestions of people on forums of how to get it back, using your command prompt ‘assoc’ & ‘ftype’ commands and manually editing your regedit etc…

Forget it, grab yourself this handy util ‘jarfix

Jarfix has existed since 2002, so can be trusted to correct the .jar association & put back the following -jar flag, so when you launch a .jar file it runs correctly. On typing ‘ftype jarfile’ in your Command Prompt you should see the following.

jarfile=”C:\Program Files (x86)\Java\jre6\bin\javaw.exe” -jar “%1” %*