Can you help me in modifying the data source I use introducing the option you refer? My current data source is something like: <xa-datasource> <jndi-name>jdbc/SOCRATEDS</jndi-name> <track-connection-by-tx/> <isSameRM-override-value>false</isSameRM-override-value> <xa-datasource-class>oracle.jdbc.xa.client.OracleXADataSource</xa-datasource-class> <xa-datasource-property name="URL">jdbc:oracle:thin:@//xxx.yyy.zzz.aaa:pppp/myschema</xa-datasource-property> <xa-datasource-property name="User">myuser</xa-datasource-property> <xa-datasource-property name="Password">mypwd</xa-datasource-property> <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleExceptionSorter</exception-sorter-class-name> <no-tx-separate-pools/> <type-mapping>Oracle9i</type-mapping> </xa-datasource> <depends optional-attribute-name="TransactionManagerService">jboss:service=TransactionManager Have I to introduce a new row like this: <xa-datasource-property name="CURSOR_SHARING">FORCE</xa-datasource-property> Thanks again. Domenico View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4211536#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...