anonymous wrote : 12:41:55,517 ERROR [STDERR] at java.lang.Class.getDeclaredMethod(Class.java:1264) | 12:41:55,517 ERROR [STDERR] at net.itcube.util.jdbc.DebuggableStatement.executeVerboseQuery(DebuggableStatement.java Looks like your application's class net.itcube.util.jdbc.DebuggableStatement is trying to call a method on JBoss specific class. Do you have the code of DebuggableStatement.executeVerboseQuery, which might show us which was exactly might be wrong? I checked the jar files in both 3.2.3 and 4.0.3 and i do see that the executeBatch method on WrappedPreparedStatement (which extends from WrappedStatement) is available in both the versions. Did you modify any of the jar files in JBoss? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4134148#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...