Troubleshooting CloverETL: Where to Locate Logs in Server and Designer

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In this blog, we’ll go over quick ways to troubleshoot issues in CloverETL Server and Designer using some methods from our CloverCARE support team. Here are some tips on where to locate logs and which system files are the best to use.

If you have any questions , definitely reach out and contact us at That's what we're here for! Also, if you do locate the logs but still need some kind of assistance, details you can provide from them will help us get things back on track as quickly as we can.

Note: We’ll be using Tomcat as the example application server. If you’re using another application server, all the logs/configuration files may use a different location/approach.

CloverETL Server Logs


This file describes all the information pertaining to CloverETL’s health and status. It’s helpful for learning about:

  • Memory-related details (e.g. warnings about low disk space)
  • Operations that have been carried out
  • Graph/Jobflow Executions
    • Information on graph/jobflow triggered
    • Runtime of said graph/jobflow
    • Finish status
    • Error information in case the graph/jobflow fails
  • Database-related exceptions (used in conjunction with and context.xml)

Location: <TOMCAT_HOME>\temp\cloverlogs\all.log directory (default location, but can be dependent of the configuration)

Tip: In the exception stack trace, look for error messages to figure out the reason for an error.


catalina.log (Application Server Log)

Contains everything that is written to Tomcat’s standard output and error console (“System.out” and “System.err”). Therefore, unexpected errors pertaining to Tomcat will likely be here.

Location: <TOMCAT_HOME>\logs\catalina.log


Job Execution Log (logs for individual CloverETL jobs)

Contains the console output of CloverETL Runtime executing the particular transformation or jobflow. This is the Server’s equivalent of the Console view in Designer.

Location: Execution History in CloverETL Server Console: Select the job that failed, then select Log File tab on the right side detail panel.server_gui.png

CloverETL Server Configuration Files

Used to configure environment variables, to specify config file locations (e.g., and specify memory settings, e.g. Heap Memory.

Location: <TOMCAT_HOME>\bin\ (setenv.bat on Windows)



Helpful to understand the overall configuration of your Tomcat server where you can specify:

  • Port Numbers after installation
  • SSL Configuration
    • Keystore and Truststore locations
  • Logging of all requests processed by Tomcat
    • To enable logging of all requests, add the following lines:
    • <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
            prefix="localhost_access_log." suffix=".txt"
            pattern="%h %l %u %t %D %r %s %b" />

Location: <TOMCAT_HOME>\conf\server.xml

Used to configure your CloverETL system database (using JDBC connection parameters) as well as configure the root path of your sandbox home

Location: <TOMCAT_HOME>\ (location can be specified by the user when creating the file for the first time)

Tip: (Depending on which option you chose when you downloaded Server, the ready-to-go bundle or Server on its own.) If you downloaded the bundle that includes CloverETL Server and Tomcat, the file will be located in <TOMCAT_HOME>\cloverconf\



Used to configure JNDI resources.

Location: <TOMCAT_HOME>\conf\context.xml


CloverETL Server Configuration Export/Import

You can export the current Server configuration (e.g. Users, Schedules, Sandboxes) into a single XML document. This is helpful for replicating Server configuration between dev, test, and production environments, as well as when you need to inspect all CloverETL settings in one place.

Location: CloverETL Server Console (top menu) – Configuration – Export

CloverETL Designer

Runtime Log

Runtime log in Designer is an equivalent to “all.log” for the Server environmentyou’ll find the health and status of the environment there. For information about the last job executed, look for Job Execution Log (Note: Designer keeps track of only the last execution, while Server keeps a full Executions History.)

Location: Access the runtime menu which is located in the right bottom corner of the Designer window and click Open Runtime Log File

Designer troubleshooting blog.png

Job Execution LogConsole

Location: In Designer, on the bottom of the screen labeled Console (if it’s closed, go to Window > Show View > Other… then select General / Console)

Eclipse Log

Contains errors that are specific to the Eclipse framework that Designer is built on. You’ll find some of the GUI errors there (similar to Designer Error Log)

Location: <workspace_location>/.metadata/.log


Designer Error Log

Contains errors generated by the GUI. You’ll find this useful when dialogs don’t show up or behave erratically. Usually, there isn’t much you can fix yourself here, but the error information you can provide to our support team is quite valuable.

Location: In the Designer, navigate to Window > Show View > Other... then select General / Error Log

CloverETL Cluster

Jgroups Log

Contains information pertaining to all nodes in Cluster, such as:

  • Membership detection and notification about active/crashed cluster nodes
  • Detection and removal of crashed nodes
  • Sending and receiving of node-to-cluster messages
  • Sending and receiving of node-to-node messages

Location: <TOMCAT_HOME>/temp/cloverlogs/jgroups.log

Contact Support

There’s a lot of information you can gather when you come across unexpected issues in CloverETL. And not every issue is the same, even if it appears to be. If for any reason you have questions that aren’t answered here, please don’t hesitate to contact us at We’ll make sure to resolve things for you in a timely manner. That’s our mission here at CloverCARE support!

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