if you could give me a minimal schema to reproduce this on then please do. The "invalid column name" is thrown by the oracle jdbc driver for one of the *standard* column names in jdbc metadata: TABLE_NAME TABLE_SCHEM (yes, SCHEM not SCHEMA) TABLE_CAT TABLE_TYPE REMARKS and there is no difference between these when running on jdk 1.4 or 1.5. The only time i have been able to reproduce something like this is with "older" faulty jdbc drivers. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3967391#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...