The first time you sign into developerWorks, a profile is created for you. Select information in your profile (name, country/region, and company) is displayed to the public and will accompany any content you post. You may update your IBM account at any time.

All information submitted is secure.

The first time you sign in to developerWorks, a profile is created for you, so you need to choose a display name. Your display name accompanies the content you post on developerworks.

Please choose a display name between 3-31 characters. Your display name must be unique in the developerWorks community and should not be your email address for privacy reasons.

All information submitted is secure.

My developerWorks:

My notifications:

Sign out

Select a language:

IBM Diagnostic Tool Framework for Java Version 1.10

The Diagnostic Tool Framework for Java (DTFJ) is a Java application programming interface (API) used to support the building of Java diagnostics tools.

IBM DTFJ overview

DTFJ works with data from a system dump that has been processed by the jextract tool. The jextract tool produces metadata from the dump, which allows the internal structure of the JVM to be analyzed. You must run jextract on the system that produced the dump. (For more information on jextract see the Diagnosis documentation.)

The DTFJ API helps diagnostics tools access the following information:

Memory locations stored in the dump
Relationships between memory locations and Java internals
Java threads running within the JVM
Native threads held in the dump
Java classes and their classloaders that were present
Java objects that were present in the heap
Java monitors and the objects and threads they are associated with
Details of the machine on which the dump was produced
Details of the Java version that was being used
The command line that launched the JVM

Installation instructions

For Eclipse 3.4:

Download the IBM DTFJ plugin which is packaged as an archived update site dtfj-updatesite.zip.
From the Eclipse menu select Help > Software Updates
In the dialogue that appears, select Available Software and click Add Site ...
Select Archive...
In the dialogue box, select the dtfj-updatesite.zip file from the file dialogue and click Open.
Ensure IBM DTFJ zip file is selected. Click Install.
Click Next, read and accept the license agreements.
Click Finish.

For earlier versions of Eclipse:

Download the IBM DTFJ plugin which is packaged as an archived update site dtfj-updatesite.zip.
From the Eclipse menu select Help > Software Updates > Find and Install...
In the dialogue that appears, select Search for new features to install and click Next.
Select New Archived Site...
In the dialogue box, select the dtfj-updatesite.zip file from the file dialogue and click Open.
At the 'Edit local site' dialogue, in the 'Name' field enter IBM DTFJ updates and click OK.
Ensure IBM DTFJ updates is selected as a site included in the search. Click Finish.
Select all of the 'IBM DTFJ' features to install. Click Next.
Read the license agreements and if you agree to them click Next.
Click Finish.
Click on Install all to initiate installation.