Frequently Asked Questions

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What is FusionReactor?

FusionReactor is an application, database and server Application Performance Monitor – built for monitoring production environments running Java Applications that can run on any J2EE platform that meets the J2EE 1.5 specification or higher e.g. Tomcat, JBoss, Jetty, GlassFish, JRUN and WebSphere/WebLogic (with limited support) – FusionReactor is recommended for monitoring Adobe ColdFusion.

FusionReactor is a Java Agent.

FusionReactor has a web-based interface which uses the latest templating technologies  – please refer to our system requirements.

How can I evaluate FusionReactor?

We offer a 14-day free trial of FusionReactor Ultimate Edition. After 14 days, the Trial simply disables itself, without the need to uninstall it. Evaluators can turn the Trial into any full version by entering a valid license key into the FusionReactor About Page without reinstalling the software.

Who should use FusionReactor?

FusionReactor is designed to empower developerssupport engineers, system administrators and DevOps. Depending on your technical role, you will benefit from using FusionReactor in different ways, such as using Crash Protection – to proactively monitor your server and maintain uptime or Root Cause Analysis – identify server issues and performance problems.   As a leading Application Performance Monitor (APM), FusionReactor will improve stability, quality and performance of your web applications.   FusionReactor provides real benefits throughout the development, testing and production lifecycle, and will prove to have a rapid return on investment. By avoiding just one bug, hang or system crash, and you almost definitely have your investment back!

What are the different editions of FusionReactor?

FusionReactor comes in THREE product editions – Compare Editions
FusionReactor Standard is suited for single server environments and gives you all the basic monitoring functionality as well as our unique Crash Protection capability.
FusionReactor Enterprise is more suited to multi-server environments. It gives you all the benefits of the Standard edition, plus the Enterprise Dashboard and Fusion Mobile functionality. The Enterprise edition is suited to environments where you would like to see the ‘health’ of all of your servers from a single window and when you require more advanced Protection features, such as Enterprise Scripting.
FusionReactor Ultimate comes with all the features of Enterprise plus the ground breaking (patent pending)Production Debugger which provides amazing insight to enable you to identify issues as fast as possible in production environments
Note when you install the Free TRIAL version, you have full access to the Ultimate Edition features. The TRIAL version is for evaluation purposes and runs for 14 days. After this time it will disable itself until you enter a valid license key.

Does FusionReactor run on J2EE application servers?

YES. FusionReactor is a Java application that can run on any J2EE platform that meets the J2EE 1.5 specification or higher e.g. Tomcat, JBoss, Jetty, GlassFish, JRUN. View a complete list of supported platforms and operating systems on our  system requirements page.

How can I find more help on FusionReactor?

We offer a wide range of resources and documentation on the FusionReactor product. Please refer to our support area which contains our Knowledge Base, links to Google groups as well as our online documentation.

What levels of support services do you offer for FusionReactor?

We offer Fusion Premium Support which is a paid support option and can be purchased on an incident by incident basis.

How can I upgrade to the latest version of FusionReactor?

If you are using a manual installation and you want to update your FusionReactor, see this documentation.

If you are using an automatic installation and you want to update your FusionReactor, see this documentation.

More information on FusionReactor updates can be found here.

What's the difference between FusionReactor and FusionAnalytics?

FusionReactor is an Application Performance Monitor, it captures metrics (instrumentation) as the server is running and it is able to store many requests online for an immediate diagnostic view about the health of your server, but it is not able to provide information about longer-term data (more than approx. 1 week) – this keeps FusionReactor compact and ensures that overhead is kept to an absolute minimum. FusionAnalytics is a visual tool for analyzing the data which has been provided by FusionReactor. FusionAnalytics loads the extensive log file data captured by FusionReactor into the FusionAnalytics DB. It then provides numerous graphs, charts, tables and reports, to visualize the data. FusionAnalytics is all about “Making IT Better” and giving you the information and data to help you make better business decisions, improve application performance and quality of your applications as well as measure exactly how your applications are performing on a continuous day to day basis.

Is it possible to monitor a remote server?

Yes it is possible to monitor a remote server as long as FusionReactor is already installed on that server.


How is FusionReactor Licensed?

Each physical or virtual server requires one FusionReactor license – all of the instances which are installed on that server are covered by the one FusionReactor license. So, if you have (say) 6 physical boxes, then you need 6 licenses. Note, that on a single box you may have multiple instances (JRun, Tomcat, JBoss) installed on it, but you still only need 1 license for that (virtual or physical) server. Virtual Machines (VM’s) are also classed as separate physical servers and therefore require a license.

If you would like to use the FusionReactor Enterprise Dashboard functionality to be able to monitor all the servers from a single window, then you will need to take the FusionReactor Enterprise Edition on all the servers you wish to monitor. Therefore if you would like to monitor 3 servers with the FusionReactor Enterprise Dashboard you will need 3 x FusionReactor Enterprise licenses.

Is FusionReactor priced per CPU?

No. All FusionReactor licenses cover the whole server, irrespective of how many CPU’s the server contains.

Can I monitor a Standard Edition of FusionReactor using the Enterprise Dashboard?

It is NOT possible to monitor a FusionReactor Standard edition instance using the FusionReactor Enterprise Dashboard or the Enterprise AIR Dashboard or FusionReactor Mobile. Only FusionReactor Enterprise editions can be monitored from the Enterprise Dashboard.

What are the differences between FusionReactor Ultimate, Enterprise and Standard Editions?

There are a number of features that are exclusive to FusionReactor Ultimate and Enterprise Editions. Refer to our comparison page for more details.

What are the advantages of purchasing FusionReactor Enterprise?

FusionReactor Enterprise edition offers you additional monitoring functionality and is the perfect choice if you would like to see the status of all of your monitored servers from a single Dashboard window. Features exclusive to the Enterprise Edition are:

  • Enterprise Dashboard
  • FusionReactor Mobile
  • AIR Enterprise Dashboard
  • Enterprise Scripting

Enterprise Scripting: trigger a script when a server becomes unresponsive, and when it becomes responsive again. This mechanism can allow you to pro-actively attempt to restart a failed server or instance, integrate FusionReactor into an existing monitoring environment or provide custom logging or reporting.

Can I buy a FusionReactor Ultimate, FusionReactor Enterprise and FusionReactor Standard together?

Yes. Say you have 3 servers and only need the Enterprise Dashboard functionality on one of them, then it’s no problem to purchase one Enterprise and two Standard editions. It is also possible to purchase one FusionReactor Ultimate, one FusionReactor Enterprise and one FusionReactor Standard or purchase any combination and quantitiy of any version that you need. Please note that you can ONLY monitor Enterprise Editions with the Enterprise Dashboard.

Does the edition of Adobe ColdFusion I have, effect which FusionReactor edition I should purchase?

No. You can purchase either the Ultimate, Enterprise or Standard Edition, regardless of which version of ColdFusion you currently wish to monitor.

Which editions of FusionReactor can I use with the FusionReactor Mobile or AIR Enterprise Dashboard?

These extensions only work together with Ultimate and Enterprise Editions of FusionReactor. If you have the Standard Edition and would like to upgrade

Do I have to use FusionReactor Mobile or AIR Enterprise Dashboard to monitor my server?

No, this is an add-on tool which is platform independent and allows easy integration with your desktop client, so that you can receive server issue alerts on your desktop. The functionality which is available with the Enterprise Edition of FusionReactor is not affected.

What is the process of migrating a license key to another server?

FusionReactor provides you with a quick and easy way of deactivating a license key from a server, allowing you to activate the same license key on a different server. You can see the documentation for this here.


I already own a version of FusionReactor, what are my upgrade options?

It is possible to upgrade some older versions of FusionReactor – please refer to our upgrade page for details.


How do I view my payment and subscription information?

If you have purchased online with a Credit card it will have been through our Emerchant provider ShareIT.
Log into your ShareIT account here: From here you can edit your payment and subscription information.
If you have any questions with regards to your purchase via ShareIT please see here:


How do I get more information regarding my manual purchase?

If you have purchased by a PO, received an invoice OR paid by Bank Transfer then you will have done a Manual purchase.
Please contact us here at for any questions you may have about a manual purchase, or if you would like to pay via Bank Transfer, Cheque or Paypal.