# JMX Input Plugin - Error in connecting to Weblogic JMX
**URL:** https://discuss.elastic.co/t/jmx-input-plugin-error-in-connecting-to-weblogic-jmx/252670
**Category:** Logstash
**Created:** [October 20, 2020, 11:30am UTC](https://discuss.elastic.co/t/jmx-input-plugin-error-in-connecting-to-weblogic-jmx/252670 "2020-10-20T11:30:20Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@abidub](https://discuss.elastic.co/u/abidub)
#### Post date: [October 20, 2020, 11:30am UTC](https://discuss.elastic.co/t/jmx-input-plugin-error-in-connecting-to-weblogic-jmx/252670/1 "2020-10-20T11:30:20Z")
Hi there,
I am using the JMX Input Plugin and trying to connect to a Weblogic JMX service URL and getting the following error:
`[ERROR][logstash.inputs.jmx] "failed to retrieve RMIServe stub: javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial`
`[ERROR] [logstash.inputs.jmx] javax.management.remote.rmi.RMIConnector.connect (javax/management/remote/rmi/RMIConnector.java:369)`
my service URL looks like this:
`service:jmx:iiop://IP:PORT/jndi/weblogic.management.mbeanservers.runtime`
I am unable to open this URL in jConsole to test it is correct, as I believe I have to pass through a JAR file when launching jConsole.
Should I need to place a JAR file somewhere in logstash to get the above service URL working?
If so, what location should this typically go in?
Ideally, I would like to avoid having to add/include any jar files and keep my config simple.
Many thanks in advance for any advice.
Cheers
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 17, 2020, 11:30am UTC](https://discuss.elastic.co/t/jmx-input-plugin-error-in-connecting-to-weblogic-jmx/252670/2 "2020-11-17T11:30:23Z")
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