It passes with this configuration now <datasources> | | <xa-datasource> | | <jndi-name>XAOracleDS</jndi-name> | | <reauthentication-mechanism>org.jboss.resource.adapter.jdbc.vendor.DummyReauthenticationMechanism</reauthentication-mechanism> | <user-name>scott</user-name> | <password>tiger</password> | <track-connection-by-tx/> | <isSameRM-override-value>false</isSameRM-override-value> | <connection-property name="connectionProperties">key=Value</connection-property> | <xa-datasource-class>oracle.jdbc.xa.client.OracleXADataSource</xa-datasource-class> | <xa-datasource-property name="uRL">jdbc:oracle:thin:@localhost:1522|jdbc:oracle:thin:@localhost:1523|jdbc:oracle:thin:@localhost:1524|jdbc:oracle:thin:@localhost:1521</xa-datasource-property> | <!-- connection-url>jdbc:oracle:thin:@localhost:1522|jdbc:oracle:thin:@localhost:1523|jdbc:oracle:thin:@localhost:1524|jdbc:oracle:thin:@localhost:1521</connection-url --> | | <!-- driver-class>oracle.jdbc.driver.OracleDriver</driver-class --> | <url-delimiter>|</url-delimiter> | <url-property>uRL</url-property> | <!-- xa-datasource-property name="User">scott</xa-datasource-property --> | <!-- xa-datasource-property name="Password">tiger</xa-datasource-property --> | <!-- xa-datasource-property name="ConnectionProperties">XATransLoose=true</xa-datasource-property --> | <min-pool-size>1</min-pool-size> | <max-pool-size>5</max-pool-size> | <prefill>true</prefill> | | <!-- Uses the pingDatabase method to check a connection is still valid before handing it out from the pool --> | <!--valid-connection-checker-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleValidConnectionChecker</valid-connection-checker-class-name--> | <!-- Checks the Oracle error codes and messages for fatal errors --> | <!-- exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.OracleExceptionSorter</exception-sorter-class-name --> | <!-- Oracles XA datasource cannot reuse a connection outside a transaction once enlisted in a global transaction and vice-versa --> | <no-tx-separate-pools/> | <!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml (optional) --> | <metadata> | <type-mapping>Oracle9i</type-mapping> | </metadata> | </xa-datasource> | | <!-- mbean code="org.jboss.resource.adapter.jdbc.vendor.OracleXAExceptionFormatter" | name="jboss.jca:service=OracleXAExceptionFormatter"> | <depends optional-attribute-name="TransactionManagerService">jboss:service=TransactionManager</depends> | </mbean --> | | </datasources> Here is the results after deployment 22:00:25,160 INFO [ConnectionFactoryBindingService] Bound ConnectionManager 'jboss.jca:service=DataSourceBinding,name=XAOracleDS' to JNDI name 'java:XAOracleDS' | 22:00:30,183 INFO [ConnectionFactoryBindingService] Unbound ConnectionManager 'jboss.jca:service=DataSourceBinding,name=XAOracleDS' from JNDI name 'java:XAOracleDS' | 22:00:30,262 WARN [XAManagedConnectionFactory] Failed to create an XA connection to jdbc:oracle:thin:@localhost:1522: Could not create connection; - nested throwable: (java.sql.SQLException: Io exception: The Network Adapter could not establish the connection) | 22:00:30,263 WARN [XAManagedConnectionFactory] Failed to create an XA connection to jdbc:oracle:thin:@localhost:1523: Could not create connection; - nested throwable: (java.sql.SQLException: Io exception: The Network Adapter could not establish the connection) | 22:00:30,265 WARN [XAManagedConnectionFactory] Failed to create an XA connection to jdbc:oracle:thin:@localhost:1524: Could not create connection; - nested throwable: (java.sql.SQLException: Io exception: The Network Adapter could not establish the connection) | 22:00:30,281 INFO [ConnectionFactoryBindingService] Bound ConnectionManager 'jboss.jca:service=DataSourceBinding,name=XAOracleDS' to JNDI name 'java:XAOracleDS' This looks perfectly okay as jdbc:oracle:thin:@localhost:1522, jdbc:oracle:thin:@localhost:1523 and jdbc:oracle:thin:@localhost:1524 are invalid URL View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4148398#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...