If you already have installed the plugin from the YourKit Java Profiler version you use (i.e. having the same update site URL - see below), just make sure it is up to date: go to Help | MyEclipse Configuration Center | Software... in the main menu.
Go to Help | MyEclipse Configuration Center in the main menu:
Switch to Software and press "Add Site" button:
Copy appropriate URL:
|YourKit Java Profiler 2017.02||
|YourKit Java Profiler 2016.02||
|YourKit Java Profiler 2015||
|YourKit Java Profiler 2014||
... and paste it to the "URL" field.
Please also specify arbitrary name for the update site, e.g. "YourKit":
Important: Eclipse update manager needs internet access. If your computer sits behind a proxy server, you will need to configure Eclipse accordingly: go to Window -> Preferences, then General -> Network Connections and enter the host name or IP and port of your proxy server.
If there is no internet access, use the bundled update site archive:
<Profiler Installation Directory>/lib/eclipse-plugin/yjp<version>_for_eclipse.zip
In pop-up, press "Add to Profile...":
Press "Apply 1 change...":
Accept the license and press "Next":
After restarting MyEclipse, you should see Profile action in the toolbar: