How do I get Hibernate to stop logging to STDOUT in my server logs?

Issue

I can't seem to get Hibernate to stop logging to STDOUT in my server logs. I am getting entries like this in my log files
```
INFO  [STDOUT] Hibernate: select ordh2entit0_.ordref as ordref43_0_, ordh2entit0_.ccamt as ccamt43_0_, ordh2en...
```
Our log4j configuration has org.hibernate log level set to WARN, but every EJB3 entity access is resulting in Hibernate INFO messages being output to log (and console)

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