This article contains the steps to enable DEBUG logging for TIBCO Data Virtualization Server.

1. Open TDV Server log4j.properties file located at [TDV SERVER_INSTALL_DIRECTORY]/conf/server/ in a text editor 

2. Depending on the functionality impacted, enable DEBUG logging for that configuration property/properties by uncommenting the respective line/lines.

Example: To enable Debug logging for "Data source introspection" functionality, follow the steps:

- Open [TDV SERVER_INSTALL_DIRECTORY]/conf/server/log4j.properties file and uncomment the below 3 lines: 

#log4j.logger.com.compositesw.cdms.ds=DEBUG
#log4j.logger.com.compositesw.cdms.datasource=DEBUG
#log4j.logger.com.compositesw.cdms.datasource.introspect=DEBUG

3. For the above changes to take effect, restart the TDV server. The [TDV SERVER_INSTALL_DIRECTORY]/logs/cs_server.log will contain debug entries.

4. To disable debug logging, comment the lines in [TDV SERVER_INSTALL_DIRECTORY]/conf/server/log4j.properties and carry out Step (3) once more.
   

Note: To enable debug logging without restarting the server, follow the steps below: (This option reloads the log4j.properties file into memory and does not need a server restart for the changes to take effect) 
- Browse to "TDV Studio > Administration > Configuration > Server > Configuration > Debugging > Debug Output Enabled"
- Change the value to “True”
- Click “Apply” but do not close the window
- Immediately change the value back to “False”
- Click “Apply” and close the window