If I had a local-tx-datasource defined, I can set connection properties like this: <local-tx-datasource> | ... | <!-- You can include connection properties that will get passed in | the DriverManager.getConnection(props) call; | look at your Driver docs to see what these might be. --> | <connection-property name="char.encoding">UTF-8</connection-property> | <!-- Tells an Oracle 10g driver to properly implement clobs. --> | <connection-property name="SetBigStringTryClob">true</connection-property> | ... But, if I were to convert this to an xa-datasource, I see no way of telling it to set those connection properties. "BigStringTryClob" is not an attribute on Oracle's XADataSource so I can't use: <xa-datasource-property name="BigStringTryClob">true</xa-datasource-property> How can I set connection properties on XA data sources? And specifically, how to I set that big-string-try-clob configuration? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4193136#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...