Just found out that the log4j lib is not included in the firebirdsql.jar.
Sorry for that mistake.

Our problem is that firebirdsql finds the log4j.properties file before we
configure log4j in out application. So the driver is looking for something
like log/test.log which does not exist.

I put the FBLog4j property in the startup of the application
[System.setProperty("FBLog4j", "false")] but the error still occurs that
log4j cannot find the log/test.log.

Any hints?

Christian