Why doesn OracleLog work when I use ojdbc14_g.jar?
As of release 10.1.0 the Oracle JDBC drivers that support JDK 1.4 and higher use the built in logging facility in the JDK. This logging facility is in java.util.logging. Only very minimal capabilities are still available in OracleLog when using ojdbc14_g.jar. You should use java.util.logging instead.