# APM Plug-in - FAQs

## I already have OpManager. Why do I need the APM plug-in?

OpManager helps you to monitor health, availability, and performance of all devices and applications on your network. The APM plug-in proactively monitors application servers, databases, services, ERP systems, transactions, custom applications, virtual resources, and cloud apps in your heterogeneous data center. This helps in identifying application faults before your end users know about them.  

The OpManager & APM Plug-in combination offers an integrated network-application monitoring solution for your enterprise.

## Which monitors are supported by the APM plug-in?

The APM Plug-in offers out-of-the-box monitoring support for 100+ applications and servers.  

[Click here](https://www.manageengine.com/products/applications_manager/applications-monitoring-features.html) for the detailed supported monitors list.

## How is the APM plug-in licensed?

OpManager's APM plug-in is licensed based on the number of monitors. You have the option of purchasing a license for the required number of supported monitors.  

Check out our [Pricing page](https://store.manageengine.com/opmanager/index.html) for detailed pricing.

## Is the APM plug-in a separate downloadable file and are there any prerequisites?

Yes. The APM plug-in is a separate downloadable file.  

[Click here to download the file](https://www.manageengine.com/network-monitoring/apm-plugin.html)

The only prerequisite is that you should have a compatible version of OpManager installed. Click here to know more about [supported versions of OpManager for the APM plug-in](https://www.manageengine.com/network-monitoring/apm-plugin.html#prerequisites).

## What installation platforms are supported?

The APM plug-in supports Windows and Linux installation.

## Does the APM Plug-in need a separate database?

Applications Manager uses a different database. In case of a PGSQL backend, it uses the OpManager PGSQL database and creates AMDB. In case of MSSQL, it creates AMDB in the SQL instance.  

Overall, you will have two databases—one for Applications Manager and one for OpManager.

## I'm already an OpManager customer—how can I evaluate the APM plug-in? Or if I'm evaluating OpManager now, how can I get the APM plug-in?

1. Go to the [APM plug-in download page](https://www.manageengine.com/network-monitoring/apm-plugin.html) and check if your installation meets [the prerequisites to install the plug-in](https://www.manageengine.com/network-monitoring/apm-plugin.html#prerequisites).
2. Download OpManager's APM plug-in from the download tab.
3. Shut down the OpManager service.
4. Right-click the EXE file of the APM plug-in, select **Run as administrator**, and walk through the installation.
5. Start the OpManager service, which will automatically start the Applications Manager plug-in.

If you need more clarification or assistance, feel free to [reach out to us now!](http://support.opmanager.com/)