Hi,
I would like to clarify that the default log value for most of the loggers in the Virtual Data port are set to **ERROR**. Some of the log categories are set with the default log levels as **INFO** and **FATAL**. For instance, please find the log categories that are set to ``INFO`` and ``FATAL`` by default:
```
com.google.api.client.http.HttpTransport - FATAL
com.denodo.tomcat - INFO
org.enhydra.jdbc.xapool - FATAL
server.start - INFO
server.stop - INFO
```
If I need to find the loggers that has been changed, then I would use the [GET_ACTIVE_LOGGERS()](https://community.denodo.com/docs/html/browse/latest/en/vdp/vql/stored_procedures/predefined_stored_procedures/get_active_loggers) stored procedure, which returns information about the log categories that have been set in the Virtual DataPort server, to find the changed log levels and set it back to the default log level i.e) **ERROR**. Also, please note that the log levels ``TRACE`` and ``DEBUG`` would be enabled to log sensitive information like the data retrieved from the data sources etc. Hence, it is recommended to avoid setting the log category **“com.denodo”** to **“DEBUG”** or **“TRACE”** because it will reduce the performance of Virtual DataPort, due to the amount of messages that the logging system will have to store.
For further information, please refer [Log Categories](https://community.denodo.com/kb/en/view/document/Using%20logcontroller%20and%20useful%20log%20categories#h.jsvoixm25xlx:~:text=%27%2C%20%27FATAL%27.-,Log%20categories,-The%20log%20categories ) Knowledge Base Article.
If you still need further assistance and if you are a valid support user, you can raise a [Support Case](https://support.denodo.com/cases/add), for further assistance from the Support Team.
Hope it helps!
