Hibernate appears to be logging normal information to System.err. A few examples are:



There are about 70 of these in total. My logging setup is as follows:



I know that slf4j-simple, per the SLF4J Manual (http://www.slf4j.org/manual.html), "outputs all events to System.err. Only messages of level INFO and higher are printed."

Knowing this, I set the org.slf4j.simpleLogger.logFile system property to System.out as specified in the SimpleLogger docs (http://www.slf4j.org/apidocs/org/slf4j/impl/SimpleLogger.html).

This didn't change any behavior, however, and I am still getting 70+ Hibernate System.err logs.

Is there any way to configure Hibernate to not output to System.err? The problem is that these System.err messages are being interpreted as WARNs while they are only informational messages.

I'm not sure but I think you should change the property file you are using in your application.

If you add the log4j.properties file to your classpath and change the part that logs to the console to something like this:


You should be able to see the messages as System.out instead of System.err
This is the part that should be set as System.out:

Thanks for the reply. We had removed our log4j.properties file because I thought we wouldn't need them anymore. Is that possibly not the case?

As far as I know if you are using log4j with hibernate in a standalone application that's the way you configure the properties.
If you are deploying the application on a container there might be other approaches.

Thanks for the information. I will mess around with it for a bit and see if I can get anything to work. Does Hibernate output to System.err at all or is something else doing that?

It appears that the log4j.properties file doesn't have any effect. We're simply using the log4j-over-slf4j bridge and then using slf4j-simple for our logging purposes. We configured slf4j-simple to output to System.out instead of the default System.err but it appears Hibernate is still outputting to System.err.

Alright, I figured out the solution. Hibernate 4.x now uses JBoss Logging as opposed to SLF4J in 3.x. Given my specific configuration JBoss needs to be told what provider to use through the system property:

After I made that change I was able to set the system property for SLF4J-simple to System.out and all was resolved.