Splunk Dev

How to generate java jstack of the db connect jbridge process?

kserra_splunk
Splunk Employee
Splunk Employee

My db connect has been experiencing hanging issues, and splunk support has request for a jstack output for further investigating into the issue. What are the steps to obtain the jstack outputs?

splunkIT
Splunk Employee
Splunk Employee

In order to obtain jstack output on a java process, you would first need to obtain the java sdk package. The standard jre package does not include the necessary tools (ie. jps and jstack) for generating the jstack output.

Requirements:

1.) Obtain java sdk from http://www.oracle.com/technetwork/java/javase/downloads/index.html

2.) Reconfigure db connect to use the sdk version of the jvm.

For example, if you specify /usr/lib/jvm/jdk1.7.0_25 as the java home, ensure that there is a bin sub-directory which contains the java, jps, and jstack executables.

alt text

While the issue is occurring:

1.) Open a command prompt and cd into the $JAVA_HOME/bin directory

2.) Run: jps -l (this will list running java processes)

3.) Identify the process with the label com.splunk.bridge.JavaBridgeServer and copy the PID (number)

4.) Run: jstack -l (where is replaced with the copied PID from step #3)

5.) Copy the output and paste it into a text file for Support

Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Announcing Modern Navigation: A New Era of Splunk User Experience

We are excited to introduce the Modern Navigation feature in the Splunk Platform, available to both cloud and ...

Think Like an Architect: Introducing the Splunk Certified Cybersecurity Defense ...

In cybersecurity, defenders respond to threats. Architects design the systems that stop them.    As ...

Best Practices: Splunk auto adjust pipeline queue

When you enable autoAdjustQueue in Splunk, maxSize should be understood as the queue size Splunk starts with ...