Skip to main content

This content has been archived and is no longer being updated. Links may not function; however, this content may be relevant to outdated versions of the product.

Support Article

Exception on configuring SMA for Tomcat



Exception generates while configuring System Management Application (SMA) for the Tomcat.

Error Messages

pega.jmx.ui.util.JMXClientException: Cannot connect to the server with specified settings 
Failed to retrieve RMIServer stub: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: localhost; nested exception is: Connection refused: connect] at pega.jmx.ui.util.JMXClientException.wrap(


Steps to Reproduce

Open the System Management Application. 

Root Cause

Java Management Extensions (JMX) was disabled.


Perform the following local-change:

  1. Enable the JMX port on the server
  2. Execute the Tomcat's JVM with the below parameters: 


Published August 19, 2019 - Updated October 8, 2020

Was this useful?

0% found this useful

Have a question? Get answers now.

Visit the Collaboration Center to ask questions, engage in discussions, share ideas, and help others.

Did you find this content helpful?

Want to help us improve this content?

We'd prefer it if you saw us at our best.

Pega Community has detected you are using a browser which may prevent you from experiencing the site as intended. To improve your experience, please update your browser.

Close Deprecation Notice
Contact us